4–7 Mar 2026
Department of Physics, University of Michigan
America/Detroit timezone

Chi-Ming Chang (Tsinghua University) - Fortuity and Quantum Corrections to Q-cohomology

6 Mar 2026, 11:15
1h 15m
West Hall 340 (Department of Physics, University of Michigan)

West Hall 340

Department of Physics, University of Michigan

1085 S University Ave, Ann Arbor, MI 48109

Description

Abstract: In this talk, I will first give an introduction to fortuity: the fortuity property, the monotone/fortuitous classification of BPS states, and the bulk dual of these states. Next, I will talk about a non-renormalization conjecture that the Q-cohomology receives no quantum corrections, and a counter example to this conjecture. Finally, I will discuss a way of computing the quantum correction by the point-splitting regularization of operators and the OPE of operators.

Presentation materials