A Homotopy Theoretic Proof of the BV Identity in Loop Homology

Details A Homotopy Theoretic Proof of the BV Identity in Loop Homology A Homotopy Theoretic Proof of the BV Identity in Loop Homology

2007-06-08

arxiv.org/abs/0706.1277v1

Mathematics

Algebraic Topology

13 pages

Scientific paper

Chas and Sullivan proved the existence of a Batalin-Vilkovisky algebra structure in the homology of free loop spaces on closed finite dimensional smooth manifolds using chains and chain homotopies. This algebraic structure involves an associative product called the loop product, a Lie bracket called the loop bracket, and a square 0 operator called the BV operator. Cohen and Jones gave a homotopy theoretic description of the loop product in terms of spectra. In this paper, we give an explicit homotopy theoretic description of the loop bracket and, using this description, we give a homological proof of the BV identity connecting the loop product, the loop bracket, and the BV operator. The proof is based on an observation that the loop bracket and the BV derivation are given by the same cycle in the free loop space, except that they differ by parametrization of loops.

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