报告题目：Refined BPS invariants and moduli of sheaves

报告人：沈俊亮 , 耶鲁大学

时间：11月4日（星期五）9:00-10:30（北京时间）

腾讯会议：572-283-2445    会议密码：123456

摘要：I will discuss some interactions between (1) Gopakumar-Vafa’s refined BPS invariants, (2) classical geometry of certain moduli of semistable sheaves, and (3) the topology of integrable systems. In particular, I will explain how the quantum invariants for Calabi-Yau 3-folds predict interesting new structures for cohomology of more classical moduli spaces of sheaves. The talk will focus on three types examples: Higgs bundles, K3 surfaces, and local P^2.