3
The truth about finite group orbifolds
http://sms.cam.ac.uk/media/2520036
Gannon, T
Friday 16th June 2017  14:30 to 15:30
40
The truth about finite group orbifolds
http://sms.cam.ac.uk/media/2520036
http://rss.sms.cam.ac.uk/itunesimage/2409848.jpg
no

The truth about finite group orbifolds
ucs_sms_2408349_2520036
http://sms.cam.ac.uk/media/2520036
The truth about finite group orbifolds
Gannon, T
Friday 16th June 2017  14:30 to 15:30
Wed, 19 Jul 2017 14:24:13 +0100
Isaac Newton Institute
Gannon, T
8a9ae99fb95fd5f80b46c5cc94703cda
cf4dbe4c6c56d8086ad5fbab2fd790b4
11ed518ddc0758a5f6dced8822351cc6
e27684d3b4566bb3937e923552847343
Gannon, T
Friday 16th June 2017  14:30 to 15:30
Gannon, T
Friday 16th June 2017  14:30 to 15:30
Cambridge University
3600
http://sms.cam.ac.uk/media/2520036
The truth about finite group orbifolds
Gannon, T
Friday 16th June 2017  14:30 to 15:30
Chiral CFTs (VOAs or conformal nets) are interesting for their representation theory. Orbifolds are a standard method for constructing new chiral CFTs from old ones. Start with a chiral theory with trivial representation theory, and orbifold it by a finite group; the result (called a holomorphic orbifold) has the representation theory given by the twisted Drinfeld double of that finite group, where the twist is a 3cocycle. In practise it is hard to identify that twist.
I'll begin my talk by giving some examples of orbifolds. I'll identify a wellknown class of holomorphic orbifolds where we now know the twist. I'll relate holomorphic orbifolds to KKtheory as well as the PhD thesis of a certain Vaughan Jones. Then I'll explain how any choice of finite group and 3cocycle is realized by a chiral CFT. This is joint work with David Evans.
20170719T14:24:13+01:00
3600
2520036
true
16x9
false
no