Time: 10:30-12:00  (Beijing time) <- NEW TIME! Friday, 2025/10/24 (October 24)

Location: Room 401, Building 7, UCAS Zhong-Guan-Cun Campus

Speaker: Gu Jie (Southeast University)



Abstract:

We study the resurgent structure of the topological string dual to 2d U(N) Yang-Mills on torus. We find closed form formulas for instanton amplitudes up to arbitrarily high instanton orders, based on which we propose the non-perturbative partition function including contributions from all the real instantons, which is real for positive modulus and string coupling. We also explore complex instantons and find two infinite towers of them. We expect them to correspond to BPS states in type II string.


Link for Zoom meeting:

https://us06web.zoom.us/j/85715129440?pwd=QlJJRFBWWFRLMkxCVmcxZ1RKdlRxQT09

Meeting ID: 857 1512 9440
Passcode: 501105