Gromov-Witten theory via Kuranishi structures

Abstract

In this expository manuscript, we review the construction of Gromov-Witten virtual fundamental class via FOOO's theory of Kuranishi structures for moduli spaces of pseudo-holomorphic maps defined on closed Riemann surfaces. We consider constraints coming from the ambient space and Deligne-Mumford moduli, called primary insertions, as well as intrinsic classes such as $\psi$-classes and Hodge classes.

This article is based on the original article of Fukaya-Ono and subsequent articles of Fukaya-Oh-Ohta-Ono and covers the relevant parts of their theory of Kuranishi structures that is needed to define Gromov-Witten VFC. Proof of the gluing theorem and related estimates are not included