MS Seminar (Mathematics - String Theory)

Speaker: Yefeng Shen (U of Oregon)
Title: Quantum Spectrum and Gamma structure for standard flips
Date (JST): Thu, Aug 28, 2025, 15:30 - 17:00
Place: Seminar Room A
Abstract: I will talk about the quantum spectrum and Gamma structure for projective bundles, blow-ups, and standard flips. After restricting the quantum multiplication to the extremal curve direction, we obtain a decomposition of the quantum cohomology of standard flips into asymptotic Gamma classes. We then show that this decomposition is compatible with the semi-orthogonal decompositions for these spaces constructed in the work of Orlov and Belmans-Fu-Raedschelders. The talk is based on a work joint with Mark Shoemaker.