Symmetries of F-cohomological field theories and F-topological recursion

TL;DR

This paper introduces F-topological recursion, a non-symmetric variant of topological recursion, explores its symmetries, and extends the correspondence between cohomological field theories and topological recursion to the F-framework.

Contribution

It defines F-topological recursion, analyzes its symmetries, and establishes a spectral curve formulation, extending the CohFT-topological recursion correspondence to F-CohFTs.

Findings

F-TR is equivalent for the ancestor vector potential of an F-CohFT and some F-CohFT in its F-Givental orbit.

Correlation functions of F-CohFTs of cohomological degree 0 are governed by F-TR.

A large set of linear symmetries of F-CohFTs are identified, not commuting with F-Givental action.

Abstract

We define F-topological recursion (F-TR) as a non-symmetric version of topological recursion, which associates a vector potential to some initial data. We describe the symmetries of the initial data for F-TR and show that, at the level of the vector potential, they include the F-Givental (non-linear) symmetries studied by Arsie, Buryak, Lorenzoni, and Rossi within the framework of F-manifolds. Additionally, we propose a spectral curve formulation of F-topological recursion. This allows us to extend the correspondence between semisimple cohomological field theories (CohFTs) and topological recursion, as established by Dunin-Barkowski, Orantin, Shadrin, and Spitz, to the F-world. In the absence of a full reconstruction theorem \`a la Teleman for F-CohFTs, this demonstrates that F-TR holds for the ancestor vector potential of a given F-CohFT if and only if it holds for some F-CohFT in its F-Givental orbit. We turn this into a useful statement by showing that the correlation functions of F-topological field theories (F-CohFTs of cohomological degree 0) are governed by F-TR. We apply these results to the extended 2-spin F-CohFT. Furthermore, we exhibit a large set of linear symmetries of F-CohFTs, which do not commute with the F-Givental action.