BV structure on the Hochschild cohomology of Sullivan algebras

http://dx.doi.org/10.1016/j.joems.2017.03.001

Abstract

Let X be a closed, simply connected manifold of dimension m and LX the space of free loops on X. If (∧V, d) is the minimal Sullivan model of X where V is finite dimensional, then there is a Gerstenhaber algebra (∧V  ∧s−1V #, d0 ), where V # is the graded dual of V, and its homology is isomorphic to the loop space homology H∗ (LX). In this paper we define a BV structure on (∧V  ∧s−1V #, d0 ) which extends the Gerstenhaber bracket.