Poisson structures on sets of Maurer-Cartan elements
Abstract
Given a differential graded Lie algebra (dgla) L satisfying certain conditions, we construct Poisson structures on the gauge orbits of its set of Maurer-Cartan (MC) elements, termed Maurer-Cartan-Poisson (MCP) structures. They associate a compatible Batalin-Vilkovisky algebra to each MC element of L. An MCP structure is shown to exist for a number of dglas associated to commutative Frobenius algebras, deformations of Poisson and symplectic structures, as well as the Chevally-Eilenberg complex. MCP structures yield a notion of hamiltonian flow of MC elements, and also define Lie algebroids on gauge orbits, whose isotropy algebras give invariants of MC elements. As an example, this gives a finite-dimensional two-step nilpotent graded Lie algebra associated to any closed symplectic manifold.
Keywords
Cite
@article{arxiv.2203.02310,
title = {Poisson structures on sets of Maurer-Cartan elements},
author = {Thomas Machon},
journal= {arXiv preprint arXiv:2203.02310},
year = {2022}
}
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35 pages