Date and Time: Friday, Feb 12, 5 pm
Modular Averages for WZW Correlators, and $N \leftrightarrow k$ Correspondence
Genus zero correlators in $SU(N)_k$ WZW models are expressed as modular averages of the vacuum conformal block. This exploits an intriguing relationship between crossing symmetry and modular group. Furthermore, an $N \leftrightarrow k$ correspondence between modular averagings in dual theories has been established.