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arXiv · 1208.1727

A wall-crossing formula for Gromov-Witten invariants under variation of git quotient

Eduardo Gonzalez·Chris T. Woodward
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Abstract

We prove a quantum version of Kalkman's wall-crossing formula comparing Gromov-Witten invariants on geometric invariant theory (git) quotients related by a change in polarization. The wall-crossing terms are gauged Gromov-Witten invariants with smaller structure group. As an application, we show that the graph Gromov-Witten potentials of quotients related by wall-crossings of crepant type are equivalent up to a distribution in the quantum parameter that is almost everywhere zero. This is a version of the crepant transformation conjecture of Li-Ruan, Bryan-Graber, Coates-Ruan etc. in cases where the crepant transformation is obtained by variation of git.

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Eduardo Gonzalez, Chris T. Woodward. 2012-08-08. A wall-crossing formula for Gromov-Witten invariants under variation of git quotient. https://arxiv.org/abs/1208.1727

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