11月10日
研讨会, 演讲, 讲座
Department of Mathematics - Seminar on Pure Mathematics - Conifold theory and gap conjecture
We introduce Huang-Klemm-Quackenbush's physics approach to the higher genus Gromov-Witten invariants, and the motivation to consider conifold theory for the quintic threefold.
11月10日
研讨会, 演讲, 讲座
IAS Center for Quantum Technologies Seminar Series - Quantum Circuit Complexity
Abstract
11月9日
研讨会, 演讲, 讲座
Department of Mathematics - Seminar on Pure Mathematics - Vafa-Witten invariants on 4 and 3 dimensional manifolds
I will talk about joint work with Gholampour and Yau on Mathematical definition of Vafa-Witten invariants on 4 dimensional manifolds, and if time permits will discuss later work work with Shing-Tung Yau, and Sergei Gukov on definition of VW invariants on 3 dimensional m
11月8日
研讨会, 演讲, 讲座
Physics Department - Condensed Matter Seminar: Average Symmetry-Protected Topological Phases: Construction and Detection
11月8日
研讨会, 演讲, 讲座
Department of Mathematics - Seminar on Pure Mathematics - BCOV's Feynman rule for quintic threefold
We will introduce BCOV's B-model Feynman rule and its A-model approach. BCOV's Feynmann rule involves the notions of geometric quantization, normalize basis, propagators, etc.
11月7日
研讨会, 演讲, 讲座
Department of Mathematics - Seminar on Pure Mathematics - Atiyah Class and Sheaf Counting on Local Calabi Yau 4 folds
We discuss Donaldson-Thomas (DT) invariants of torsion sheaves with 2 dimensional support on a smooth projective surface in an ambient non-compact Calabi Yau fourfold given by the total space of a rank 2 bundle on the surface.
11月4日
研讨会, 演讲, 讲座
Department of Mathematics - Seminar on PDE - Stability of Riemann solution containing a shock under physically admissible perturbations
I will present the so-called "a-contraction with shifts” method, which is basically energy based. This method is quite useful in studying the stability of Riemann solution containing a shock under physically admissible perturbations.
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