MS Seminar (Mathematics - String Theory)

Speaker: Benjamin Hennion (Universite Paris-Orsay)
Title: Categorified Donaldson--Thomas invariants of Calabi--Yau 3-folds
Date (JST): Thu, Jul 06, 2023, 15:30 - 17:00
Place: Seminar Room A
Abstract: Donaldson--Thomas invariants are numerical invariants associated to Calabi--Yau varieties. They can be obtained by glueing singularity invariants from local models of a suitable moduli space endowed with a (-1)-shifted symplectic structure. By studying the moduli of such local models, we will explain how to recover Brav--Bussi--Dupont--Joyce--Szendroi's perverse sheaf categorifying the DT-invariants, as well as a strategy for glueing more evolved singularity invariants, such as matrix factorizations. This is joint work with M. Robalo and J. Holstein.
Remarks: Seminar Room A + Zoom