Wei Li, Chiral algebra from worldsheet , April 3, 2025

Topic: Chiral algebra from worldsheet 

Speaker: Prof. Wei Li

Coordinates: PCFT C1124, 14:30, Thursday, April 3

 

Abstract: The chiral algebra of a 4D N≥2 superconformal field theory is a vertex operator algebra generated by the Schur subsector of the 4D theory and its rigid (yet rich) structure has been useful in constraining and classifying 4D N=2 SCFTs. I will discuss how the chiral algebra arises from the worldsheet perspective. In the conjectured worldsheet CFT dual of 4D N=4 SYM at the free point, I will explain how to extract the subsector that corresponds to the spacetime Schur operators at generic coupling, and show how they generate the chiral algebra. Time permitting, I will also discuss a work in progress on checking whether the N=4 chiral algebra is isolated or not, and the potential implications of the result. 




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