| Speaker: | Yu Nakayama (Caltech) |
|---|---|
| Title: | Refined topological string for Omega background |
| Date (JST): | Tue, Jun 14, 2011, 13:15 - 14:45 |
| Place: | Seminar Room A |
| Related File: | 472.pdf |
| Abstract: |
Nekrasov's partition function is defined on a flat bundle of $R4$ over $S1$ called the Omega background. When the fibration is self-dual, Nekrasov's partition function is equal to the topological string partition function, which computes scattering amplitudes of self-dual gravitons and graviphotons in type II superstring on a Calabi-Yau manifold. We propose worldsheet string theory interpretation for the general Omega background where the fibration is not necessarily self-dual. |
