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arXiv · 1106.5503

Comments on Worldsheet Description of the Omega Background

Yu Nakayama·Hirosi Ooguri
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Abstract

Nekrasov's partition function is defined on a flat bundle of R^4 over S^1 called the Omega background. When the fibration is self-dual, the partition function is known to be equal to the topological string partition function, which computes scattering amplitudes of self-dual gravitons and graviphotons in type II superstring compactified on a Calabi-Yau manifold. We propose a generalization of this correspondence when the fibration is not necessarily self-dual.

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Yu Nakayama, Hirosi Ooguri. 2011-06-27. Comments on Worldsheet Description of the Omega Background. https://doi.org/10.1142/s0217751x12501229

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