Time: 10:00am (UTc/GMT+8:00,Beijing/Shanghai), Mar. 23 (Tue.), 2021
Venue: 4th floor KITS Seminar Room,  No. 7 Building, UCAS Zhong-Guan-Cun Campus [View on maps]

Speaker: Yi-Wen Pan (Sun Yat-Sen Univ.)

Abstract:

Every 4d N=2 superconformal field theory (SCFT) contains a protected subsector isomorphic to a 2d vertex operator algebra (VOA), whose elements are referred to as the Schur operators. In this talk, we will derive this structure from supersymmetric localization, and extract from it a topological algebra which is then matched with the deformation quantization associated to the 3d SCFT from dimensional reduction. Motivated by simple Gukov-Witten-type surface defects, we discuss the structural information of the VOAs hidden in the integrands that integrate to the 4d N=4 Schur indices.