Hypercommutative operad as a homotopy quotient of BV
type: Item
instance of: scholarly article
title: Hypercommutative operad as a homotopy quotient of BV
zbMATH Open document ID: 1281.55011
author: S. Shadrin
author: Anton Khoroshkin
author: Nikita Markarian
published in: Communications in Mathematical Physics
publication date: 2013-08-09T00:00:00Z
full work available at URL: https://arxiv.org/abs/1206.3749
review text: The hypercommutative operad considered in the title of this article is the operad in graded modules \(\mathsf{Hycomm}\) defined by the homology of the moduli spaces of stable point curves \(\overline{\mathcal{M}}_{n+1}\), \(n\geq 1\). This operad admits a simple presentation with a generating operation \(m_n = m_n(x_1,\dots,x_n)\) corresponding to the fundamental class of the moduli spaces \([\overline{\mathcal{M}}_{n+1}]\) in each arity \(n\geq 2\) together with relations modelling higher associativity and commutativity constraints. The second operad considered in the article, the Batalin-Vilkovsky operad (the BV operad for short) denoted by \(\mathsf{BV}\), governs structures associated with double loop spaces endowed with a circle action. This operad is generated by a two-ary associative and commutative multiplication operation \(\mu = \mu(x_1,x_2)\) together with a one-ary operator \(\Delta\), referred to as the BV-operator, which sastisfies the relation of a differential operator of order two with respect to the multiplication. The BV-operad is also identified with the homology of an operad in topological spaces, the operad of framed little \(2\)-discs. Recently, \textit{G. C. Drummond-Cole} [Homotopically trivializing the circle in the framed little disks, preprint \url{arXiv:1112.1129}, to appear in J. Topol.] proved that the topological operad of the moduli spaces of stable point curves is weakly-equivalent to the operad obtained by homotopically trivializing the action of the circle on framed little \(2\)-discs. The authors of the paper under review study a homological counterpart of this weak-equivalence of topological operads. They consider an operad in chain complexes \(\mathsf{BV}/\Delta\) governing BV-algebras equipped with linear endomorphisms that trivialize the action of the BV-operator in homology. The main result of the paper is an explicit definition of a quasi-isomorphism from the hypercommutative operad \(\mathsf{Hycomm}\) towards the operad \(…
Mathematics Subject Classification ID: 55P48
Mathematics Subject Classification ID: 22E67
Mathematics Subject Classification ID: 53D45
Mathematics Subject Classification ID: 81T40
Mathematics Subject Classification ID: 81T70
zbMATH DE Number: 6197106
zbMATH Keywords: Hypercommutative operad
zbMATH Keywords: Batalin-Vilkovsky operad
zbMATH Keywords: Givental loop group action
reviewed by: Benoît Fresse
MaRDI profile type: Publication
OpenAlex ID: W3105322622
arXiv ID: 1206.3749
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DOI: 10.1007/S00220-013-1737-7
description: scientific article; zbMATH DE number 6197106