MS Seminar (Mathematics - String Theory)

Speaker: Meng-Chwan Tan (National Singapore University)
Title: Unifying Lattice Models, Links and Quantum Geometric Langlands via Branes in String Theory
Date: Tue, Dec 17, 2019, 13:15 - 14:30
Place: Seminar Room A
Related File: 2406.pdf
Abstract: I will explain how, starting with a stack of D4-branes ending on an NS5-brane in type IIA string theory, one can, via T-duality and the topological-holomorphic nature of the relevant worldvolume theories, relate (i) the lattice models realized by Costello's 4d Chern-Simons theory, (ii) links in 3d analytically-continued Chern-Simons theory, (iii) the quantum geometric Langlands correspondence realized by Kapustin-Witten using 4d N = 4 gauge theory and its quantum group modification, and (iv) the Gaitsgory-Lurie conjecture relating quantum groups/affine Kac-Moody algebras to Whittaker D-modules/W-algebras. This furnishes, purely physically via branes in string theory, a novel bridge between the mathematics of integrable systems, geometric topology, geometric representation theory, and quantum algebras.