Sinica-NCTS Geometry Seminar
主講者: | 吳思曄教授 (香港大學) |
講題: | Topology and flux of T-dual manifolds with circle and torus actions |
時間: | 2013-01-04 (Fri.) 16:00 - 17:00 |
地點: | 數學所 617 研討室 (台大院區) |
Abstract: | T-duality is a concept arrising from compactification of type II string theories. From a mathematical perspective, we present an explicit formula for the topology and H-flux of the T-dual with respect to circle or torus action on a manifold. A new feature is that the T-dual manifold is a singular space when the action is not free. We propose that the Ramond-Ramond charges of type II string theories on the singular dual are classified by twisted equivariant cohomology groups. This is a joint work with Mathai. |
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