3
Mathematical Aspects of Quantum Integrable Models in and out of Equilibrium
http://sms.cam.ac.uk/collection/2163440
Quantum Integrability is a rich and highly crossdisciplinary subject, with fascinating mathematical structures and a wide spectrum of physical applications. It is the key tool for understanding critical properties of numerous quantum systems at and out of equilibrium, such as spin chains or the deltafunction Bose gas (also known as the quantum nonlinear Schrödinger equation). Longstanding problems such as the scaling limit of the Ising model in a magnetic field have been solved thanks to recent developments of integrable techniques.
These developments in theoretical physics have been paralleled by advances in several areas of pure and applied mathematics, enhancing interactions among researchers working on combinatorics, probability theory, infinite dimensional Lie algebras, knots and braids, soliton systems, random matrices, nonlinear differential equations and computational science.
A new arena for quantum integrable systems has recently arisen as a result of the ability to realize for the first time, stable and controllable isolated quantum systems (by means of cold atom experimental setups). This has led to an immense growth of this research area and has given access to a largely unexplored territory of outequilibrium quantum dynamics.
These exciting advances call for the development of new mathematical techniques to meet the challenge of describing outofequilibrium phenomena in strongly interacting lowdimensional quantum systems.
In gathering together a core group of outstanding scientists, we aim to make substantial progress on a series of key open problems. Topics will include
Quantum Quenches
Boundary Conformal Field Theory
Driven Systems
Local and nonlocal conserved charges
Boltzmann equation and transport phenomena
Entanglement measures
Linear and nonlinear response
Nonlinear hydrodynamics
Thermalization and Equilibration in Quantum Systems
Generalized Gibbs Ensemble
Dynamics of quantum integrable systems
Open quantum systems
Techniques in atomics condensate
Activities
In the first week of the programme there will be a conference, that will gather together leading physicists and mathematicians in the area of Quantum Integrability. In each of the following weeks there will be two introductory 60 minute lectures by worldleading experts. The topics of the lectures will be chosen to mesh with Focus Week Activities planned to involve the participants on key themes of the programme. During the Focus Weeks there will also be a certain number of round table discussions that will help in exploiting new scientific directions and shaping the future research on this emerging field.
1440
2016
Wed, 01 Jun 2016 11:13:23 +0100
Mon, 25 Jan 2016 12:47:09 +0000
en
smssupport@ucs.cam.ac.uk
Mathematical Aspects of Quantum Integrable Models in and out of Equilibrium
http://sms.cam.ac.uk/collection/2163440
http://rss.sms.cam.ac.uk/itunesimage/2163441.jpg
http://video.search.yahoo.com/mrss
Mathematical Aspects of Quantum Integrable Models in and out of Equilibrium
Quantum Integrability is a rich and highly crossdisciplinary subject, with fascinating mathematical structures and a wide spectrum of physical applications. It is the key tool for understanding critical properties of numerous quantum systems at and out of equilibrium, such as spin chains or the deltafunction Bose gas (also known as the quantum nonlinear Schrödinger equation). Longstanding problems such as the scaling limit of the Ising model in a magnetic field have been solved thanks to recent developments of integrable techniques.
These developments in theoretical physics have been paralleled by advances in several areas of pure and applied mathematics, enhancing interactions among researchers working on combinatorics, probability theory, infinite dimensional Lie algebras, knots and braids, soliton systems, random matrices, nonlinear differential equations and computational science.
A new arena for quantum integrable systems has recently arisen as a result of the ability to realize for the first time, stable and controllable isolated quantum systems (by means of cold atom experimental setups). This has led to an immense growth of this research area and has given access to a largely unexplored territory of outequilibrium quantum dynamics.
These exciting advances call for the development of new mathematical techniques to meet the challenge of describing outofequilibrium phenomena in strongly interacting lowdimensional quantum systems.
In gathering together a core group of outstanding scientists, we aim to make substantial progress on a series of key open problems. Topics will include
Quantum Quenches
Boundary Conformal Field Theory
Driven Systems
Local and nonlocal conserved charges
Boltzmann equation and transport phenomena
Entanglement measures
Linear and nonlinear response
Nonlinear hydrodynamics
Thermalization and Equilibration in Quantum Systems
Generalized Gibbs Ensemble
Dynamics of quantum integrable systems
Open quantum systems
Techniques in atomics condensate
Activities
In the first week of the programme there will be a conference, that will gather together leading physicists and mathematicians in the area of Quantum Integrability. In each of the following weeks there will be two introductory 60 minute lectures by worldleading experts. The topics of the lectures will be chosen to mesh with Focus Week Activities planned to involve the participants on key themes of the programme. During the Focus Weeks there will also be a certain number of round table discussions that will help in exploiting new scientific directions and shaping the future research on this emerging field.
Mathematical Aspects of Quantum Integrable Models in and out of Equilibrium
Quantum Integrability is a rich and highly crossdisciplinary subject, with fascinating mathematical structures and a wide spectrum of physical applications. It is the key tool for understanding critical properties of numerous quantum systems at and out of equilibrium, such as spin chains or the deltafunction Bose gas (also known as the quantum nonlinear Schrödinger equation). Longstanding problems such as the scaling limit of the Ising model in a magnetic field have been solved thanks to recent developments of integrable techniques.
These developments in theoretical physics have been paralleled by advances in several areas of pure and applied mathematics, enhancing interactions among researchers working on combinatorics, probability theory, infinite dimensional Lie algebras, knots and braids, soliton systems, random matrices, nonlinear differential equations and computational science.
A new arena for quantum integrable systems has recently arisen as a result of the ability to realize for the first time, stable and controllable isolated quantum systems (by means of cold atom experimental setups). This has led to an immense growth of this research area and has given access to a largely unexplored territory of outequilibrium quantum dynamics.
These exciting advances call for the development of new mathematical techniques to meet the challenge of describing outofequilibrium phenomena in strongly interacting lowdimensional quantum systems.
In gathering together a core group of outstanding scientists, we aim to make substantial progress on a series of key open problems. Topics will include
Quantum Quenches
Boundary Conformal Field Theory
Driven Systems
Local and nonlocal conserved charges
Boltzmann equation and transport phenomena
Entanglement measures
Linear and nonlinear response
Nonlinear hydrodynamics
Thermalization and Equilibration in Quantum Systems
Generalized Gibbs Ensemble
Dynamics of quantum integrable systems
Open quantum systems
Techniques in atomics condensate
Activities
In the first week of the programme there will be a conference, that will gather together leading physicists and mathematicians in the area of Quantum Integrability. In each of the following weeks there will be two introductory 60 minute lectures by worldleading experts. The topics of the lectures will be chosen to mesh with Focus Week Activities planned to involve the participants on key themes of the programme. During the Focus Weeks there will also be a certain number of round table discussions that will help in exploiting new scientific directions and shaping the future research on this emerging field.
Cambridge University
Vincenzo Abete
va281@cam.ac.uk
http://sms.cam.ac.uk/collection/2163440
Mathematical Aspects of Quantum Integrable Models in and out of Equilibrium
20160125T12:47:09+00:00
INIMS
101092
no

Anomalous hydrodynamics in two dimensions
ucs_sms_2163440_2183423
http://sms.cam.ac.uk/media/2183423
Anomalous hydrodynamics in two dimensions
Abanov, A (Stony Brook University)
Wednesday 3rd February 2016  11:30 to 12:30
Thu, 18 Feb 2016 15:24:14 +0000
108
108100
Isaac Newton Institute
Abanov, A
8a43541a284bbd8e9fc414cd0065c05d
1a66024beafbb1f8c1763ec8c9e7d401
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Abanov, A (Stony Brook University)
Wednesday 3rd February 2016  11:30 to 12:30
Abanov, A (Stony Brook University)
Wednesday 3rd February 2016  11:30 to 12:30
Cambridge University
4020
http://sms.cam.ac.uk/media/2183423
Anomalous hydrodynamics in two dimensions
Abanov, A (Stony Brook University)
Wednesday 3rd February 2016  11:30 to 12:30
20160601T11:13:23+01:00
4020
2183423
true
16x9
false
no

Dynamical phase transitions and statistics of excitations
ucs_sms_2163440_2163585
http://sms.cam.ac.uk/media/2163585
Dynamical phase transitions and statistics of excitations
Silva, A (SISSA, Abdus Salam International Centre for Theoretical Physics)
Thursday 14th January 2016  10:00 to 11:00
Mon, 25 Jan 2016 16:08:36 +0000
Isaac Newton Institute
Silva, A
718bae5bfd802f561fd6025cd0dd0263
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Silva, A (SISSA, Abdus Salam International Centre for Theoretical...
Silva, A (SISSA, Abdus Salam International Centre for Theoretical Physics)
Thursday 14th January 2016  10:00 to 11:00
Cambridge University
3131
http://sms.cam.ac.uk/media/2163585
Dynamical phase transitions and statistics of excitations
Silva, A (SISSA, Abdus Salam International Centre for Theoretical Physics)
Thursday 14th January 2016  10:00 to 11:00
Coauthors: Pietro Smacchia (Rutgers), Eugene Demler (Harvard), Michael Knap (Munich), Anna Maraga (SISSA)
Dynamical phase transitions can occur in isolated quantum systems that are brought out of equilibrium by either a sudden or a gradual change of their parameters. Theoretical examples range from the behaviour of the O(N) model as well as spinmodels with long range interactions both showing dynamical criticality in their prethermal steadystates. In this talk I will start by discussing the characterization of such dynamical phase transitions based on the statistics of produced excitations. I will also discuss the role of fluctuations as well as on the differences between sudden and gradual changes of the system parameters. Finally, I will discuss the emergence of zeroes in the Loschmidt amplitude attempting to elucidate their physical meaning in connection with the dynamical transitions above.
20160125T16:08:36+00:00
3131
2163585
true
16x9
false
no

Dynamics and relaxation in quantum integrable systems
ucs_sms_2163440_2163535
http://sms.cam.ac.uk/media/2163535
Dynamics and relaxation in quantum integrable systems
Caux, JS (Universiteit van Amsterdam)
Tuesday 12th January 2016  14:00 to 15:00
Mon, 25 Jan 2016 15:25:19 +0000
Isaac Newton Institute
Caux, JS
6f73eea042aed555865cf323394ffa2f
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Caux, JS (Universiteit van Amsterdam)
Tuesday 12th January 2016  14:00 to...
Caux, JS (Universiteit van Amsterdam)
Tuesday 12th January 2016  14:00 to 15:00
Cambridge University
3600
http://sms.cam.ac.uk/media/2163535
Dynamics and relaxation in quantum integrable systems
Caux, JS (Universiteit van Amsterdam)
Tuesday 12th January 2016  14:00 to 15:00
This talk will review a number of integrabilitybased results on the dynamics of quantum spin chains and interacting atomic gases. In equilibrium, space and timedependent correlations will be reviewed, together with corresponding experimental observations. Integrability will also be used to describe the dynamics of (quasi)solitonic excitations and their scattering properties. For more generic outofequilibrium situations, a number of recent developments will be explained, including the Quench Action method for explicitly calculating the relaxation of observables after a quantum quench. The exact solution to the NéeltoXXZ quench using the QA will be presented, together with recent results on the necessity to include quasilocal charges in the Generalized Gibbs Ensemble in order to properly describe postquench steadystate properties.
20160125T15:25:19+00:00
3600
2163535
true
16x9
false
no

Expansion potentials for exact farfromequilibrium spreading of energy in the XXZ model
ucs_sms_2163440_2163442
http://sms.cam.ac.uk/media/2163442
Expansion potentials for exact farfromequilibrium spreading of energy in the XXZ model
Moore, J (University of California, Berkeley)
Monday 11th January 2016  11:30 to 12:30
Mon, 25 Jan 2016 13:12:58 +0000
Isaac Newton Institute
Moore, J
a7e383568bd57bd5a4c04c1a85527a27
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Moore, J (University of California, Berkeley)
Monday 11th January 2016  11:30...
Moore, J (University of California, Berkeley)
Monday 11th January 2016  11:30 to 12:30
Cambridge University
4080
http://sms.cam.ac.uk/media/2163442
Expansion potentials for exact farfromequilibrium spreading of energy in the XXZ model
Moore, J (University of California, Berkeley)
Monday 11th January 2016  11:30 to 12:30
Coauthors: Romain Vasseur (UC Berkeley), Christoph Karrasch (UC Berkeley; FU Berlin)
The rates at which energy and particle densities move to equalize arbitrarily large temperature and chemical potential differences in a closed quantum system have an emergent thermodynamical description whenever energy or particle current commutes with the Hamiltonian. Concrete examples include the energy current in the 1D spinless fermion model with nearestneighbor interactions (XXZ spin chain), energy current in Lorentzinvariant theories or particle current in interacting Bose gas in arbitrary dimension. Even far from equilibrium, these rates are controlled by state functions (generalized pressures or "expansion potentials"), expressed as integrals of equilibrium Drude weights. This relation between nonequilibrium quantities and linear response implies nonequilibrium Maxwell relations for the Drude weights which explain some old XXZ model identities. We verify our results via DMRG calculations for the XXZ chain, which suggest some interesting additional fe atures beyond the analytical results.
20160125T13:12:58+00:00
4080
2163442
true
16x9
false
no

Fidelities in the spinboson model
ucs_sms_2163440_2177111
http://sms.cam.ac.uk/media/2177111
Fidelities in the spinboson model
Lukyanov, S (Rutgers, The State University of New Jersey)
Wednesday 27th January 2016  11:30 to 12:30
Tue, 09 Feb 2016 17:09:34 +0000
Isaac Newton Institute
Lukyanov, S
05340ea5c95fc4de743da9de3b205d3a
9759545a2981e53b089b21c70af3a2c2
131c58ce5c48571c91e4d1f416a8a832
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Lukyanov, S (Rutgers, The State University of New Jersey)
Wednesday 27th...
Lukyanov, S (Rutgers, The State University of New Jersey)
Wednesday 27th January 2016  11:30 to 12:30
Cambridge University
4500
http://sms.cam.ac.uk/media/2177111
Fidelities in the spinboson model
Lukyanov, S (Rutgers, The State University of New Jersey)
Wednesday 27th January 2016  11:30 to 12:30
20160209T17:09:35+00:00
4500
2177111
true
16x9
false
no

Heating and breakdown of adiabaticity in Floquet systems through manybody resonances
ucs_sms_2163440_2177081
http://sms.cam.ac.uk/media/2177081
Heating and breakdown of adiabaticity in Floquet systems through manybody resonances
Polkovnikov, P (Boston University)
Thursday 21st January 2016  11:30 to 12:30
Tue, 09 Feb 2016 16:48:18 +0000
Isaac Newton Institute
Polkovnikov, P
e7f9a4b44d8bc9841458d797df9b86ab
179aa6b7d22b71ebc79f72feee70bfa4
af166d0b95d22b861d5eed0e90f99624
bb5b451ebd8b17982ad9eaac5e44351d
Polkovnikov, P (Boston University)
Thursday 21st January 2016  11:30 to 12:30
Polkovnikov, P (Boston University)
Thursday 21st January 2016  11:30 to 12:30
Cambridge University
4380
http://sms.cam.ac.uk/media/2177081
Heating and breakdown of adiabaticity in Floquet systems through manybody resonances
Polkovnikov, P (Boston University)
Thursday 21st January 2016  11:30 to 12:30
20160209T16:48:18+00:00
4380
2177081
true
16x9
false
no

Heisenberg spin chains by separation of variables: recent advances
ucs_sms_2163440_2165188
http://sms.cam.ac.uk/media/2165188
Heisenberg spin chains by separation of variables: recent advances
Terras, V [Université ParisSud 11, CNRS (Centre national de la recherche scientifique)]
Thursday 14th January 2016  15:00 to 16:00
Wed, 27 Jan 2016 14:16:38 +0000
Isaac Newton Institute
Terras, V
6d60f9a4fe0df7850b86f950ac064c54
fe28653393710ddcd04fd4ad788f9e3b
1f7de27bedd323d457f5384d8ba3b2b4
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Terras, V [Université ParisSud 11, CNRS (Centre national de la recherche...
Terras, V [Université ParisSud 11, CNRS (Centre national de la recherche scientifique)]
Thursday 14th January 2016  15:00 to 16:00
Cambridge University
2854
http://sms.cam.ac.uk/media/2165188
Heisenberg spin chains by separation of variables: recent advances
Terras, V [Université ParisSud 11, CNRS (Centre national de la recherche scientifique)]
Thursday 14th January 2016  15:00 to 16:00
Coauthors: G. Niccoli (ENS Lyon), N. Kitanine (Univ. de Bourgogne), J.M. Maillet (ENS Lyon)
During the last decades, important progresses have been made concerning the computation of form factors and correlation functions of simple models solvable by algebraic Bethe Ansatz (ABA) such as the XXZ spin1/2 chain or 1D Bose gas with periodic boundary conditions. However, the generalization of these results to more complicated models or different types of integrable boundary conditions is for the moment limited by the range of applicability of ABA or by some difficulties of the method.
In this talk, we discuss the solution of Heisenberg spin chains (XXX, XXZ or XYZ) in the framework of a complementary approach, Sklyanin's quantum Separation of Variables approach. This enables us notably to consider for these models various types of boundary conditions (quasiperiodic, open...) not directly solvable by Bethe ansatz. More precisely, we discuss in this framework some new results and open problems concerning the description of the spectrum by means of solutions of a functional TQ equation (or equivalently in terms of Bethetype equations). We also discuss the problem of the computation of the eigenstates scalar products and of the form factors of local operators.
20160127T14:16:38+00:00
2854
2165188
true
16x9
false
no

High order correlations and what we can learn about the solution for many body problems from experiment
ucs_sms_2163440_2163593
http://sms.cam.ac.uk/media/2163593
High order correlations and what we can learn about the solution for many body problems from experiment
Schmiedmayer, J (Technische Universität Wien)
Thursday 14th January 2016  11:30 to 12:30
Mon, 25 Jan 2016 16:01:01 +0000
Isaac Newton Institute
Schmiedmayer, J
090ea963b83c75e64e9ba307bda23e61
d997b4317aaee1622455403604be5dfc
483348494eeaec91cf48bfaae7d4716b
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Schmiedmayer, J (Technische Universität Wien)
Thursday 14th January 2016 ...
Schmiedmayer, J (Technische Universität Wien)
Thursday 14th January 2016  11:30 to 12:30
Cambridge University
3900
http://sms.cam.ac.uk/media/2163593
High order correlations and what we can learn about the solution for many body problems from experiment
Schmiedmayer, J (Technische Universität Wien)
Thursday 14th January 2016  11:30 to 12:30
The knowledge of all correlation functions of a system is equivalent to solving the corresponding quantum manybody problem. If one can identify the relevant degrees of freedom, the knowledge of a finite set of correlation functions is in many cases sufficient to determine a sufficiently accurate solution of the corresponding field theory. Complete factorization is equivalent to identifying the relevant degrees of freedom where the Hamiltonian becomes diagonal. I will give examples how one can apply this powerful theoretical concept in experiment.
A detailed study of nontranslation invariant correlation functions reveals that the prethermalized state a system of two 1dimensional quantum gas relaxes to after a splitting quench [1], is described by a generalized Gibbs ensemble [2]. This is verified through phase correlations up to 10th order.
Interference in a pair of tunnelcoupled onedimensional atomic superfluids, which realize the quantum SineGordon / massive Thirring models, allows us to study if, and under which conditions the higher correlation functions factorize [3]. This allowed us to characterize the essential features of the model solely from our experimental measurements: detecting the relevant quasiparticles, their interactions and the different topologically distinct vacuumstates the quasiparticles live in. The experiment thus provides a comprehensive insights into the components needed to solve a nontrivial quantum field theory.
Our examples establish a general method to analyse quantum systems through experiments. It thus represents a crucial ingredient towards the implementation and verification of quantum simulators.
Work performed in collaboration with E.Demler (Harvard), Th. Gasenzer und J. Berges (Heidelberg). Supported by the Wittgenstein Prize, the Austrian Science Foundation (FWF): SFB FoQuS: F40P10 and the EU: ERCAdG QuantumRelax
[1] M. Gring et al., Science, 337, 1318 (2012); [2] T. Langen et al., Science 348 207211 (2015). [3] T. Schweigler et al., arXiv:1505.03126
20160125T16:01:01+00:00
3900
2163593
true
16x9
false
no

Inhomogeneous quenches and arctic curves in fermionic systems
ucs_sms_2163440_2163578
http://sms.cam.ac.uk/media/2163578
Inhomogeneous quenches and arctic curves in fermionic systems
Viti, J (MaxPlanckInstitut für Physik komplexer Systeme, Dresden)
Wednesday 13th January 2016  16:30 to 17:30
Mon, 25 Jan 2016 15:40:06 +0000
Isaac Newton Institute
Viti, J
8b24dd71f11c1da1d4289801b0e52e29
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ed80a5f95917079640cdbbbf262bcb16
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Viti, J (MaxPlanckInstitut für Physik komplexer Systeme, Dresden)
Wednesday...
Viti, J (MaxPlanckInstitut für Physik komplexer Systeme, Dresden)
Wednesday 13th January 2016  16:30 to 17:30
Cambridge University
3840
http://sms.cam.ac.uk/media/2163578
Inhomogeneous quenches and arctic curves in fermionic systems
Viti, J (MaxPlanckInstitut für Physik komplexer Systeme, Dresden)
Wednesday 13th January 2016  16:30 to 17:30
Coauthors: Nicola Allegra (Universite de Lorraine), Jerome Dubail (Universite de Lorraine and CNRS), Masud Haque (MPIPKS), JeanMarie Stephan (MPIPKS)
In this talk I will consider two fermionic chains at different densities joined together and evolved unitarily. I will present many exact results concerning the largetime limit of correlation functions and the Loschmidt echo. I will show that this type of quench is deeply related, via analytic continuation in imaginary time, to the arctic curve phenomena in statistical mechanics: interfaces separating fluctuating and frozen regions, a celebrated example of which is the arctic circle theorem for dimers on the aztec diamond.
Related Links
http://arxiv.org/abs/1507.08132  paper 1
http://arxiv.org/abs/1512.02872  paper 2
20160125T15:40:07+00:00
3840
2163578
true
16x9
false
no

Initial states in integrable quantum field theory quenches from an integral equation hierarchy
ucs_sms_2163440_2165195
http://sms.cam.ac.uk/media/2165195
Initial states in integrable quantum field theory quenches from an integral equation hierarchy
Takacs, G (Budapest University of Technology and Economics)
Friday 15th January 2016  11:30 to 12:30
Wed, 27 Jan 2016 14:29:19 +0000
Isaac Newton Institute
Takacs, G
44feede945f9cb42384db4d6053c3b5e
50f4b09a4c7ad4465d9fe285a86c7a14
a0e801937d464cce7de0fadf91433ae9
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Takacs, G (Budapest University of Technology and Economics)
Friday 15th...
Takacs, G (Budapest University of Technology and Economics)
Friday 15th January 2016  11:30 to 12:30
Cambridge University
3363
http://sms.cam.ac.uk/media/2165195
Initial states in integrable quantum field theory quenches from an integral equation hierarchy
Takacs, G (Budapest University of Technology and Economics)
Friday 15th January 2016  11:30 to 12:30
Coauthors: David X. Horvath (Budapest University of Technology and Economics), Spyros Sotiriadis (SISSA)
We consider the problem of determining the initial state of integrable quantum field theory quenches in terms of the postquench eigenstates. The corresponding overlaps are a fundamental input to most exact methods to treat integrable quantum quenches. We construct and examine an infinite integral equation hierarchy based on the form factor bootstrap, proposed earlier as a set of conditions determining the overlaps. Using quenches of the mass and interaction in SinhGordon theory as a concrete example, we present theoretical arguments that the state has the squeezed coherent form expected for integrable quenches, and supporting an Ansatz for the solution of the hierarchy. Moreover we also develop an iterative method to solve numerically the lowest equation of the hierarchy. The iterative solution along with extensive numerical checks performed using the next equation of the hierarchy provides a strong numerical evidence that the proposed Ansatz gives a very good approximation for the solution.
Related Links
http://www.sciencedirect.com/science/article/pii/S0550321315004095  Nuclear Physics B902 (2016) 508547
20160127T14:29:19+00:00
3363
2165195
true
16x9
false
no

Integrability and supersymmetry in quantum optics
ucs_sms_2163440_2163528
http://sms.cam.ac.uk/media/2163528
Integrability and supersymmetry in quantum optics
Gritsev, V (Universiteit van Amsterdam)
Tuesday 12th January 2016  11:30 to 12:30
Mon, 25 Jan 2016 15:04:13 +0000
Isaac Newton Institute
Gritsev, V
4a3d241aa21f10c9c930217e4688fa2d
9218d24f6babf5ec94e6e12742eba128
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Gritsev, V (Universiteit van Amsterdam)
Tuesday 12th January 2016  11:30 to...
Gritsev, V (Universiteit van Amsterdam)
Tuesday 12th January 2016  11:30 to 12:30
Cambridge University
3600
http://sms.cam.ac.uk/media/2163528
Integrability and supersymmetry in quantum optics
Gritsev, V (Universiteit van Amsterdam)
Tuesday 12th January 2016  11:30 to 12:30
First I will give an overview of integrable structures in quantum optics. Then I will discuss some new methods recently developed by us for solving quantum dynamics in various nonlinear models of quantum optics. Finally I am going to talk about supersymmetry in quantum optics and spinorbit coupled systems.
20160125T15:04:13+00:00
3600
2163528
true
16x9
false
no

Integrability of a deterministic cellular automaton driven by stochastic boundaries
ucs_sms_2163440_2163563
http://sms.cam.ac.uk/media/2163563
Integrability of a deterministic cellular automaton driven by stochastic boundaries
Prosen, T (University of Ljubljana)
Wednesday 13th January 2016  15:00 to 16:00
Mon, 25 Jan 2016 15:08:34 +0000
Isaac Newton Institute
Prosen, T
f0f83c5301e2c2f743a1f1b44ee6dfe8
cc5d30d2a4350c6f93eb59e87e691b1f
e62f994c5e9db3a952e815ee3c57e70c
57f3ec07cbdfae587eeb6d66a9254650
Prosen, T (University of Ljubljana)
Wednesday 13th January 2016  15:00 to...
Prosen, T (University of Ljubljana)
Wednesday 13th January 2016  15:00 to 16:00
Cambridge University
2840
http://sms.cam.ac.uk/media/2163563
Integrability of a deterministic cellular automaton driven by stochastic boundaries
Prosen, T (University of Ljubljana)
Wednesday 13th January 2016  15:00 to 16:00
We propose an interacting manybody spacetimediscrete Markov chain model, which is composed of an integrable deterministic and reversible cellular automaton (the rule 54 of [Bobenko et al, CMP 158, 127 (1993)]) on a finite onedimensional lattice Z_2^n, and local stochastic Markov chains at the two lattice boundaries which provide chemical baths for absorbing or emitting the solitons. Ergodicity and mixing of this manybody Markov chain is proven for generic values of bath parameters, implying existence of a unique nonequilibrium steady state. The latter is constructed exactly and explicitly in terms of a particularly simple form of matrix product ansatz which is termed a patch ansatz. This gives rise to an explicit computation of observables and kpoint correlations in the steady state as well as the construction of a nontrivial set of local conservation laws. Feasibility of an exact solution for the full spectrum and eigenvectors (decay modes) of the Markov matrix is sug gested as well. We conjecture that our ideas can pave the road towards a theory of integrability of boundary driven classical deterministic lattice systems.
20160125T15:08:34+00:00
2840
2163563
true
16x9
false
no

Memorypreserving equilibration after a quantum quench in a 1d critical model
ucs_sms_2163440_2183416
http://sms.cam.ac.uk/media/2183416
Memorypreserving equilibration after a quantum quench in a 1d critical model
Sotiriadis, S (SISSA, Università degli Studi Roma Tre)
Tuesday 2nd February 2016  16:00 to 17:00
Thu, 18 Feb 2016 14:52:27 +0000
Isaac Newton Institute
Sotiriadis, S
1e3529bdaab75c12be970a96c6dc1aca
e1da0ce152cf54884235ab49ac4aeac1
68365185ac76c7da7462ddb8c2999f7b
13920a8d267a14b336839ea560ad1114
Sotiriadis, S (SISSA, Università degli Studi Roma Tre)
Tuesday 2nd February...
Sotiriadis, S (SISSA, Università degli Studi Roma Tre)
Tuesday 2nd February 2016  16:00 to 17:00
Cambridge University
3900
http://sms.cam.ac.uk/media/2183416
Memorypreserving equilibration after a quantum quench in a 1d critical model
Sotiriadis, S (SISSA, Università degli Studi Roma Tre)
Tuesday 2nd February 2016  16:00 to 17:00
20160218T14:52:27+00:00
3900
2183416
true
16x9
false
no

New perspectives on the Riemann Hypothesis
ucs_sms_2163440_2177073
http://sms.cam.ac.uk/media/2177073
New perspectives on the Riemann Hypothesis
LeClair, A (Cornell University)
Wednesday 20th January 2016  11:30 to 12:30
Tue, 09 Feb 2016 16:41:23 +0000
Isaac Newton Institute
LeClair, A
bc9ba47cab27cfae698f46ddf83205bb
e7a054e1ec721db561bfdf9e38345508
93781b28b60f3441ce93a6d3a69b749c
e830206df49da4a8968612d3c7cdd567
LeClair, A (Cornell University)
Wednesday 20th January 2016  11:30 to 12:30
LeClair, A (Cornell University)
Wednesday 20th January 2016  11:30 to 12:30
Cambridge University
3900
http://sms.cam.ac.uk/media/2177073
New perspectives on the Riemann Hypothesis
LeClair, A (Cornell University)
Wednesday 20th January 2016  11:30 to 12:30
20160209T16:41:23+00:00
3900
2177073
true
16x9
false
no

NonEquilibrium Transport at Quantum Critical Points
ucs_sms_2163440_2177097
http://sms.cam.ac.uk/media/2177097
NonEquilibrium Transport at Quantum Critical Points
Bhaseen, J (King's College London)
Monday 25th January 2016  14:00 to 15:00
Tue, 09 Feb 2016 17:04:32 +0000
Isaac Newton Institute
Bhaseen, J
f20b4f8802a4c2d1e759cf0ac0bf4804
f12b6105d62c8516a151edc3afdeffe6
14230082d9c9620689c8364da521bec5
d2e3580d662397a4f77d1e0a424dc561
Bhaseen, J (King's College London)
Monday 25th January 2016  14:00 to 15:00
Bhaseen, J (King's College London)
Monday 25th January 2016  14:00 to 15:00
Cambridge University
4320
http://sms.cam.ac.uk/media/2177097
NonEquilibrium Transport at Quantum Critical Points
Bhaseen, J (King's College London)
Monday 25th January 2016  14:00 to 15:00
20160209T17:04:32+00:00
4320
2177097
true
16x9
false
no

Out of equilibrium dynamics and a unifying view on manybody localisation
ucs_sms_2163440_2165202
http://sms.cam.ac.uk/media/2165202
Out of equilibrium dynamics and a unifying view on manybody localisation
Eisert, J (Freie Universität Berlin)
Friday 15th January 2016  15:00 to 16:00
Wed, 27 Jan 2016 14:30:32 +0000
Isaac Newton Institute
Eisert, J
67551b7614e26b2fc0f608ffde3484cf
99b598dcd1fed3c1c8ba8fa51a0a1862
36f1d9307419bf4bee60f55b1a2b5842
91542a55bb282dd804c6087de63672b5
Eisert, J (Freie Universität Berlin)
Friday 15th January 2016  15:00 to 16:00
Eisert, J (Freie Universität Berlin)
Friday 15th January 2016  15:00 to 16:00
Cambridge University
3262
http://sms.cam.ac.uk/media/2165202
Out of equilibrium dynamics and a unifying view on manybody localisation
Eisert, J (Freie Universität Berlin)
Friday 15th January 2016  15:00 to 16:00
The phenomenon of manybody localisation received a lot of attention recently, both for its implications in condensedmatter physics of allowing systems to be an insulator even at nonzero temperature as well as  maybe most importantly  in the context of the foundations of quantum statistical mechanics, providing examples of systems showing the absence of thermalisation following outofequilibrium dynamics. Still, it seems fair to say that many aspects of it are still unsatisfactorily understood.
In this talk, following an introduction into recent progress on thermalisation of closed quantum systems, I will make the attempt to bring together several aspects of the phenomenology of manybody localisation, attaining new insights into the connections between seemingly unrelated features. Ideas of entanglement area laws, LiebRobinson bounds, filter functions, approximately local constants of motion, transport, and tensor networks will feature strongly. We will discuss experimentally accessible witnesses of manybody localisation in cold atomic quantum simulators.
[1] Quantum manybody systems out of equilibrium Nature Physics 11, 124 (2015) [2] Equilibration, thermalisation, and the emergence of statistical mechanics in closed quantum systems Phys. Rep., in press (2015) [3] Manybody localization implies that eigenvectors are matrixproduct states Phys. Rev. Lett. 114, 170505 (2015) [4] Local constants of motion imply information propagation New J. Phys. 17, 113054 (2015) [5] Absence of thermalization in nonintegrable systems Phys. Rev. Lett. 106, 040401 (2011) [6] Total correlations of the diagonal ensemble herald the manybody localisation transition Phys. Rev. B 92, 180202(R) (2015) [7] Experimentally accessible witnesses of manybody localisation In preparation (2015)
20160127T14:30:33+00:00
3262
2165202
true
16x9
false
no

Quantisation of KadomtsevPetviashvili equation
ucs_sms_2163440_2163600
http://sms.cam.ac.uk/media/2163600
Quantisation of KadomtsevPetviashvili equation
Sklyanin, E (University of York)
Thursday 14th January 2016  16:30 to 17:30
Mon, 25 Jan 2016 16:02:26 +0000
Isaac Newton Institute
Sklyanin, E
d7ad51ce9e9c9798c39b0c7b2faef441
cd8ad30a254523f089600c0b22d8836a
ca87983dd2e48ed205779aab64484bb9
449167e6aa0bbf1b402f03897fc40153
Sklyanin, E (University of York)
Thursday 14th January 2016  16:30 to 17:30
Sklyanin, E (University of York)
Thursday 14th January 2016  16:30 to 17:30
Cambridge University
3960
http://sms.cam.ac.uk/media/2163600
Quantisation of KadomtsevPetviashvili equation
Sklyanin, E (University of York)
Thursday 14th January 2016  16:30 to 17:30
Coauthors: Karol Kozlowski (Institut de mathematiques de Bourgogne, Dijon, France), Alessandro Torrielli (University of Surrey)
A quantisation of the KP equation on a cylinder is proposed that is equivalent to an infinite system of onedimensional bosons carrying masses m=1,2,... The Hamiltonian is Galileiinvariant and includes the cubic split/merge (m1,m2)<>(m1+m2) terms for all combinations of particles with masses m1, m2 and m1+m2, with a special choice of coupling constants. The Bethe eigenfunctions for the model are constructed. The consistency of the coordinate Bethe ansatz, and therefore, the quantum integrability of the model is verified for the sectors up to the total mass M=8
20160125T16:02:26+00:00
3960
2163600
true
16x9
false
no

Quantum integrability in the Rabi model
ucs_sms_2163440_2177088
http://sms.cam.ac.uk/media/2177088
Quantum integrability in the Rabi model
Batchelor, M (Chongqing University, Australian National University)
Friday 22nd January 2016  11:30 to 12:30
Tue, 09 Feb 2016 16:43:43 +0000
Isaac Newton Institute
Batchelor, M
9b68d448b9702c9a32b725396465d325
e2d03736b3ad5fb122c6d36df36f82f1
873ab9e79a2f534b09103e9312279570
c0e4ec196d7406252fd080c4d12fb1a5
Batchelor, M (Chongqing University, Australian National University)
Friday...
Batchelor, M (Chongqing University, Australian National University)
Friday 22nd January 2016  11:30 to 12:30
Cambridge University
3453
http://sms.cam.ac.uk/media/2177088
Quantum integrability in the Rabi model
Batchelor, M (Chongqing University, Australian National University)
Friday 22nd January 2016  11:30 to 12:30
20160209T16:43:43+00:00
3453
2177088
true
16x9
false
no

Quantum quenches in integrable lattice systems
ucs_sms_2163440_2188739
http://sms.cam.ac.uk/media/2188739
Quantum quenches in integrable lattice systems
Rigol, M (Pennsylvania State University)
Tuesday 2nd February 2016  11:30 to 12:30
Thu, 25 Feb 2016 11:28:26 +0000
Isaac Newton Institute
Rigol, M
e30ef43e866fd661071ec8ab59ccd7fc
b806a8b2d861c1bda64d5f77e06bff13
fbd439e8e67fd9c888483a0fcb87aae9
828ab9b21dc35a53a9ddbb4ea1469989
Rigol, M (Pennsylvania State University)
Tuesday 2nd February 2016  11:30 to...
Rigol, M (Pennsylvania State University)
Tuesday 2nd February 2016  11:30 to 12:30
Cambridge University
4020
http://sms.cam.ac.uk/media/2188739
Quantum quenches in integrable lattice systems
Rigol, M (Pennsylvania State University)
Tuesday 2nd February 2016  11:30 to 12:30
20160225T11:28:26+00:00
4020
2188739
true
16x9
false
no

Quantum quenches in the sineGordon model: a semiclassical approach
ucs_sms_2163440_2165107
http://sms.cam.ac.uk/media/2165107
Quantum quenches in the sineGordon model: a semiclassical approach
Kormos, M (Budapest University of Technology and Economics)
Monday 11th January 2016  10:00 to 11:00
Wed, 27 Jan 2016 13:21:22 +0000
Isaac Newton Institute
Kormos, M
98d2a2bd0736b49dc48430c11ca8fbcb
b673689a2524995d55e1d87c6021dd93
62fb88a8d6039899751b7d20f9800170
51bf2d5db9a4b739fd6aefdd5c0c2fff
Kormos, M (Budapest University of Technology and Economics)
Monday 11th...
Kormos, M (Budapest University of Technology and Economics)
Monday 11th January 2016  10:00 to 11:00
Cambridge University
3238
http://sms.cam.ac.uk/media/2165107
Quantum quenches in the sineGordon model: a semiclassical approach
Kormos, M (Budapest University of Technology and Economics)
Monday 11th January 2016  10:00 to 11:00
Coauthor: Gergely Zarand (Budapest University of Technology and Economics)
I will report results on the time evolution of correlation functions after quantum quenches in the sineGordon model computed using a semiclassical approach which is expected to yield accurate results for small and slow quenches producing slow quasiparticles with low density. I will demonstrate this by showing that the method reproduces the results of a recent form factor calculation of the relaxation of expectation values. Extending these results, the expectation values of most vertex operators will be shown not to decay to zero. I will give analytic expressions for the relaxation of dynamic correlation functions to find that they have diffusive behavior for large timelike separation. At the end of my talk I will show preliminary results obtained with an improved "semisemiclassical" version of the method.
20160127T13:21:22+00:00
3238
2165107
true
16x9
false
no

Quench in interacting spinless fermions in one dimension
ucs_sms_2163440_2183430
http://sms.cam.ac.uk/media/2183430
Quench in interacting spinless fermions in one dimension
Oshikawa, M (University of Tokyo)
Thursday 4th February 2016  11:30 to 12:30
Thu, 18 Feb 2016 15:26:43 +0000
Isaac Newton Institute
Oshikawa, M
6d79ba9d0884f68ae3e0043a9ea72729
45cdf9e505d4dd480937e622327ee335
88571009c2759cc8ed193b427793c037
50380624ea3e76cda1cca083eda009f8
Oshikawa, M (University of Tokyo)
Thursday 4th February 2016  11:30 to 12:30
Oshikawa, M (University of Tokyo)
Thursday 4th February 2016  11:30 to 12:30
Cambridge University
3840
http://sms.cam.ac.uk/media/2183430
Quench in interacting spinless fermions in one dimension
Oshikawa, M (University of Tokyo)
Thursday 4th February 2016  11:30 to 12:30
20160218T15:26:43+00:00
3840
2183430
true
16x9
false
no

Real time confinement following a quench to a nonintegrable model
ucs_sms_2163440_2165173
http://sms.cam.ac.uk/media/2165173
Real time confinement following a quench to a nonintegrable model
Calabrese, P (SISSA)
Tuesday 12th January 2016  15:00 to 16:00
Wed, 27 Jan 2016 14:14:42 +0000
Isaac Newton Institute
Calabrese, P
aec323dce42591b70b91f7407b18cb55
34bd8a7747506b819da1fa105e253de2
467e57e530f30228c4d95772d347e48f
4415b2102b0628c54cfb89ed0c715fc0
Calabrese, P (SISSA)
Tuesday 12th January 2016  15:00 to 16:00
Calabrese, P (SISSA)
Tuesday 12th January 2016  15:00 to 16:00
Cambridge University
3262
http://sms.cam.ac.uk/media/2165173
Real time confinement following a quench to a nonintegrable model
Calabrese, P (SISSA)
Tuesday 12th January 2016  15:00 to 16:00
Light cone spreading of correlations after a quantum quench is a key phenomenon characterising integrable models, which has also been measured in cold atomic experiments. Guided by numerical results for the Ising chain, we'll show that when integrability is broken in such a way that the spectrum consists of only bound states, correlations at large distance get frozen soon after the quench as a consequence of the confinement of the elemetary excitations, implying a breakdown of the lightcone scenario.
20160127T14:14:42+00:00
3262
2165173
true
16x9
false
no

Revivals and Entanglement Propagation after a Quantum Quench
ucs_sms_2163440_2163556
http://sms.cam.ac.uk/media/2163556
Revivals and Entanglement Propagation after a Quantum Quench
Cardy, J (University of California, Berkeley, University of Oxford)
Wednesday 13th January 2016  14:00 to 15:00
Mon, 25 Jan 2016 15:54:00 +0000
Isaac Newton Institute
Cardy, J
3ae47a6b6d94f8b580a2f44aec1e84b5
4c64d6c4e08795d5b8c60fcffa4aad4d
51dac74466900c58aa5a3997043487fa
788b447efb8020d33db858331e034f05
Cardy, J (University of California, Berkeley, University of Oxford)
Wednesday...
Cardy, J (University of California, Berkeley, University of Oxford)
Wednesday 13th January 2016  14:00 to 15:00
Cambridge University
3900
http://sms.cam.ac.uk/media/2163556
Revivals and Entanglement Propagation after a Quantum Quench
Cardy, J (University of California, Berkeley, University of Oxford)
Wednesday 13th January 2016  14:00 to 15:00
We consider the evolution from a state with arealaw entanglement by a gapless quantum hamiltonian. Do subsystems thermalize? How fast does the entanglement spread? In a finite system, are there quantum revivals? We attempt to answer these questions in simple solvable field theory models.
20160125T15:54:00+00:00
3900
2163556
true
16x9
false
no

Shannon mutual information of critical quantum chains
ucs_sms_2163440_2163449
http://sms.cam.ac.uk/media/2163449
Shannon mutual information of critical quantum chains
Alcaraz, F (Universidade de São Paulo)
Monday 11th January 2016  16:30 to 17:30
Mon, 25 Jan 2016 13:09:01 +0000
Isaac Newton Institute
Alcaraz, F
fb3862085f1fb41b3addb3d4955ca29d
90a693f1e79f0836638488599c83cadb
6940c1246a3f1f7cf4fdb6343995d395
d8e41a6ec9ab61eac21b2eb80d3ac0c5
Alcaraz, F (Universidade de São Paulo)
Monday 11th January 2016  16:30 to...
Alcaraz, F (Universidade de São Paulo)
Monday 11th January 2016  16:30 to 17:30
Cambridge University
2839
http://sms.cam.ac.uk/media/2163449
Shannon mutual information of critical quantum chains
Alcaraz, F (Universidade de São Paulo)
Monday 11th January 2016  16:30 to 17:30
Associated to the equilibrium Gibbs state of a given critical classical system in d dimensions we can associate a special quantum mechanical eigenfunction defined in a Hilbert space with the dimension given by the number of configurations of the classical system and components given by the Boltzmann weights of the equilibrium probabilities of the critical system. This class of eigenfunctions are generalizations of the RokhsarKivelson, initially proposed for the dimer problem in 2 dimensions. In particular in two dimensions, where most of the critical systems are conformal invariant, such functions exhibit quite interesting universal features. The entanglement entropy of a line of contiguous variables (classical spins), is given by the shannon entropy of d=1 quantum chains, and the entanglement spectrum of the two dimensional system are given by the amplitudes of the groundstate eigenfunction of the quantum chain. We present a conjecture showing that the Shannon mutual information of the quantum chains in some appropriate basis (we called conformal basis) show a universal behavior with the size of the line of the entangled spins (subsystem size). This dependence allow us to identify the conformal charge of the associated classical critical system (used to define the d=2 quantum eigenfunction) or the quantum critical chain. Tests of this conjecture for integrable and non integrable quantum chains will be presented. We also consider numerical results for two distinct generalizations of the Shannon mutual information: the one based in the concept of the R\'enyi entropy and the one based on the R\'enyi divergence. A numerical test of the extension of this conjecture for critical random chains (not conformal invariant) is also presented.
20160125T13:09:01+00:00
2839
2163449
true
16x9
false
no

Stationary states and (quasi)local charges in a semiinfinite chain
ucs_sms_2163440_2165114
http://sms.cam.ac.uk/media/2165114
Stationary states and (quasi)local charges in a semiinfinite chain
Fagotti, M (École Normale Supérieure)
Monday 11th January 2016  14:00 to 15:00
Wed, 27 Jan 2016 13:21:05 +0000
Isaac Newton Institute
Fagotti, M
7d98878ccfaf6bdc2b05a3edf762504f
08ef1a00787803801d5a9db929ac19df
a345327b1b9b1f65944ad06f5f9880ef
e18e9a78629c96008972bff086a99bfe
Fagotti, M (École Normale Supérieure)
Monday 11th January 2016  14:00 to 15:00
Fagotti, M (École Normale Supérieure)
Monday 11th January 2016  14:00 to 15:00
Cambridge University
2854
http://sms.cam.ac.uk/media/2165114
Stationary states and (quasi)local charges in a semiinfinite chain
Fagotti, M (École Normale Supérieure)
Monday 11th January 2016  14:00 to 15:00
Motivated by the remarkable fact that a local defect can have global effects on the dynamics of local observables after global quenches, I revisit the conserved quantities of the quantum XY model with open boundary conditions. I present two approaches to determine the local conservation laws. A direct method that relies on the diagonalization of the model and a more abstract procedure based on a correspondence between quadratic forms of fermions and blockToeplitzplusHankel operators. Specifically, I establish the conditions that the symbol of a particular class of blockToeplitzplusHankel operators must satisfy in order to commute with a given blockToeplits. I exhibit new families of (quasi)local conservation laws and discuss some physical consequences of the results.
20160127T13:21:05+00:00
2854
2165114
true
16x9
false
no

Stringcharge duality in integrable lattice models
ucs_sms_2163440_2177104
http://sms.cam.ac.uk/media/2177104
Stringcharge duality in integrable lattice models
Ilievski, E (Universiteit van Amsterdam)
Tuesday 26th January 2016  11:30 to 12:30
Tue, 09 Feb 2016 17:06:53 +0000
Isaac Newton Institute
Ilievski, E
6a2cc15e1fb4155d223f56fdc718b932
74d56b51effcb3cca234af7dd5f230e2
5fd59ff57c3b48d8daff58c4434f9f0b
a952b102c27b9289335f0eef66b81592
Ilievski, E (Universiteit van Amsterdam)
Tuesday 26th January 2016  11:30 to...
Ilievski, E (Universiteit van Amsterdam)
Tuesday 26th January 2016  11:30 to 12:30
Cambridge University
4200
http://sms.cam.ac.uk/media/2177104
Stringcharge duality in integrable lattice models
Ilievski, E (Universiteit van Amsterdam)
Tuesday 26th January 2016  11:30 to 12:30
20160209T17:06:54+00:00
4200
2177104
true
16x9
false
no

Studies of the Loschmidt Echo in Two Dimensional Coupled Arrays of Quantum Ising Chains and Luttinger Liquids
ucs_sms_2163440_2165181
http://sms.cam.ac.uk/media/2165181
Studies of the Loschmidt Echo in Two Dimensional Coupled Arrays of Quantum Ising Chains and Luttinger Liquids
Konik, R (Brookhaven National Laboratory)
Thursday 14th January 2016  14:00 to 15:00
Wed, 27 Jan 2016 14:18:27 +0000
Isaac Newton Institute
Konik, R
1ab14409868b88574c1fe7872f7254bb
0eb0b3db3f82e51217fbd4dbde549c33
82ea7582d61ce8ddaa4a0aabeaf7beb0
03f2657b624bf5900a7a0e5456419179
Konik, R (Brookhaven National Laboratory)
Thursday 14th January 2016  14:00...
Konik, R (Brookhaven National Laboratory)
Thursday 14th January 2016  14:00 to 15:00
Cambridge University
3238
http://sms.cam.ac.uk/media/2165181
Studies of the Loschmidt Echo in Two Dimensional Coupled Arrays of Quantum Ising Chains and Luttinger Liquids
Konik, R (Brookhaven National Laboratory)
Thursday 14th January 2016  14:00 to 15:00
Coauthors: Andrew James (LCN), Andrew Hallam (LCN)
We describe a method for simulating the real time evolution of extended quantum systems in two dimensions. The method combines the benefits of integrability and matrix product states in one dimension. In particular it can be extended to systems whose geometry is that of an infinitely long cylinder. As example applications we present results for quantum quenches in both arrays of coupled quantum Ising chains and coupled Luttinger liquids. In quenches that cross a phase boundary we find that the return probability shows nonanalyticities in time.
20160127T14:18:27+00:00
3238
2165181
true
16x9
false
no

Supersymmetry and Integrability
ucs_sms_2163440_2177151
http://sms.cam.ac.uk/media/2177151
Supersymmetry and Integrability
Schoutens, K (Universiteit van Amsterdam)
Friday 29th January 2016  11:30 to 12:30
Tue, 09 Feb 2016 17:12:07 +0000
Isaac Newton Institute
Schoutens, K
715312bc02046d06f546cffda246f0fd
b23de8ab3e24bca65b3c6c010dc156e9
0531eb86341ed22796e7b00e39af39d8
7baf2faea6944d5b3db1999f28f065e8
Schoutens, K (Universiteit van Amsterdam)
Friday 29th January 2016  11:30 to...
Schoutens, K (Universiteit van Amsterdam)
Friday 29th January 2016  11:30 to 12:30
Cambridge University
4380
http://sms.cam.ac.uk/media/2177151
Supersymmetry and Integrability
Schoutens, K (Universiteit van Amsterdam)
Friday 29th January 2016  11:30 to 12:30
20160209T17:12:07+00:00
4380
2177151
true
16x9
false
no

Tensor Network Techniques and systems out of equilibrium
ucs_sms_2163440_2163542
http://sms.cam.ac.uk/media/2163542
Tensor Network Techniques and systems out of equilibrium
Cirac, I (MaxPlanckInstitut für Quantenoptik)
Wednesday 13th January 2016  10:00 to 11:00
Mon, 25 Jan 2016 15:47:06 +0000
Isaac Newton Institute
Cirac, I
f2da9d844554f9019be18b85caeac41c
354ffa11dd213ad14ca106d8bb4e3575
5de563b8d8b7120a9b3ba42f802d48bd
956658c4b401e5423a100447925e193e
Cirac, I (MaxPlanckInstitut für Quantenoptik)
Wednesday 13th January 2016 ...
Cirac, I (MaxPlanckInstitut für Quantenoptik)
Wednesday 13th January 2016  10:00 to 11:00
Cambridge University
3840
http://sms.cam.ac.uk/media/2163542
Tensor Network Techniques and systems out of equilibrium
Cirac, I (MaxPlanckInstitut für Quantenoptik)
Wednesday 13th January 2016  10:00 to 11:00
Coauthors: mari carmen banuls (MPQ), matt Hastings (Microsoft), Hyungwon Kim (Rutgers), David Huse (Princeton), Nicola Pancotti (MPQ)
Tensor networks can efficiently describe manybody quantum systems with local interactions in thermal equilibrium. Howevever, as a consequence of the violation of the area law, they cannot describe their dynamics, in general. Still, they may provide useful information about several physical aspects of manybody systems out of equilibrium. In this talk I will mention few of the applications of tensor networks realted to that problem: the computation of quasiconstants of motion, and the characterization of manybody localized states.
20160125T15:47:06+00:00
3840
2163542
true
16x9
false
no

Thermalization and pseudolocality in extended quantum systems
ucs_sms_2163440_2163549
http://sms.cam.ac.uk/media/2163549
Thermalization and pseudolocality in extended quantum systems
Doyon, B (King's College London)
Wednesday 13th January 2016  11:30 to 12:30
Mon, 25 Jan 2016 15:50:09 +0000
Isaac Newton Institute
Doyon, B
e95e6b3356fd79840f8263dcdb173a69
96b23b87d6082e6d153719e63495b343
cc3e5dd41f80a426ab74ed7e2f4faf94
761d6b9e760d546fdcb76ab703abfdf2
Doyon, B (King's College London)
Wednesday 13th January 2016  11:30 to 12:30
Doyon, B (King's College London)
Wednesday 13th January 2016  11:30 to 12:30
Cambridge University
3840
http://sms.cam.ac.uk/media/2163549
Thermalization and pseudolocality in extended quantum systems
Doyon, B (King's College London)
Wednesday 13th January 2016  11:30 to 12:30
The ageold questions of when and how thermalization occurs in extended systems have received a large amount of attention recently. It has been found that many integrable models, because of the presence of infinitely many conservation laws, display generalized thermalization: generalized Gibbs ensembles (GGE) describe equilibration states after long time evolutions with shortrange Hamiltonians. It was also found that extended concepts of locality, such as those of pseudolocal and quasilocal conserved charges, were sometimes involved in GGEs. In this talk I will discuss my recent results in this subject. Using precise definitions of pseudolocal charges and GGEs, I will describe simple conditions on the timeevolved state and the dynamical response functions that guarantee generalized thermalization. I will explain in which cases this implies ordinary (Gibbs) thermalization. The results are based on studying a family of states defined by paths whose tangents are pseudolocal ch arges. The framework does not involve integrability, and all results are mathematically rigorous.
Related Links
http://arxiv.org/abs/1512.03713  arXiv preprint of related paper
20160125T15:50:09+00:00
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2163549
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Thermalization, integrability and localization
ucs_sms_2163440_2165121
http://sms.cam.ac.uk/media/2165121
Thermalization, integrability and localization
Vasseur, R (University of California, Berkeley, Lawrence Berkeley National Laboratory)
Monday 11th January 2016  15:00 to 16:00
Wed, 27 Jan 2016 13:28:12 +0000
Isaac Newton Institute
Vasseur, R
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Vasseur, R (University of California, Berkeley, Lawrence Berkeley National...
Vasseur, R (University of California, Berkeley, Lawrence Berkeley National Laboratory)
Monday 11th January 2016  15:00 to 16:00
Cambridge University
3363
http://sms.cam.ac.uk/media/2165121
Thermalization, integrability and localization
Vasseur, R (University of California, Berkeley, Lawrence Berkeley National Laboratory)
Monday 11th January 2016  15:00 to 16:00
Coauthors: Andrew Potter (UC Berkeley), Sid Parameswaran (UC Irvine)
In this talk, I will review the physics of manybody localized systems that fail to selfthermalize in isolation. I will argue that such systems can be thought of as being generically “integrable”, and discuss their universal dynamics after a quantum quench. I will also describe the new types of nonequilibrium phase transitions that can arise in the presence of manybody localization, and introduce new effective renormalization group approaches to capture their universal critical properties.
20160127T13:28:12+00:00
3363
2165121
true
16x9
false
no

Universal Features of the Logarithmic Negativity in massive 1+1dimensional Quantum Field Theories
ucs_sms_2163440_2177134
http://sms.cam.ac.uk/media/2177134
Universal Features of the Logarithmic Negativity in massive 1+1dimensional Quantum Field Theories
Castro Alvaredo, O (City University, London)
Thursday 28th January 2016  11:30 to 12:30
Tue, 09 Feb 2016 17:10:57 +0000
Isaac Newton Institute
Castro Alvaredo, O
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Castro Alvaredo, O (City University, London)
Thursday 28th January 2016 ...
Castro Alvaredo, O (City University, London)
Thursday 28th January 2016  11:30 to 12:30
Cambridge University
4320
http://sms.cam.ac.uk/media/2177134
Universal Features of the Logarithmic Negativity in massive 1+1dimensional Quantum Field Theories
Castro Alvaredo, O (City University, London)
Thursday 28th January 2016  11:30 to 12:30
20160209T17:10:57+00:00
4320
2177134
true
16x9
false
no

zmeasures and the nonlinear Luttinger liquid
ucs_sms_2163440_2163607
http://sms.cam.ac.uk/media/2163607
zmeasures and the nonlinear Luttinger liquid
Lamacraft, A (University of Cambridge)
Friday 15th January 2016  14:00 to 15:00
Mon, 25 Jan 2016 15:59:53 +0000
Isaac Newton Institute
Lamacraft, A
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0f5b254dce465785b49241b30c2f4542
4e5020aea7a6564fdcf43bd5ec6134ca
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Lamacraft, A (University of Cambridge)
Friday 15th January 2016  14:00 to...
Lamacraft, A (University of Cambridge)
Friday 15th January 2016  14:00 to 15:00
Cambridge University
3495
http://sms.cam.ac.uk/media/2163607
zmeasures and the nonlinear Luttinger liquid
Lamacraft, A (University of Cambridge)
Friday 15th January 2016  14:00 to 15:00
20160125T15:59:54+00:00
3495
2163607
true
16x9
false
no
2163440