TY - JOUR
T1 - Classes on compactifications of the moduli space of curves through solutions to the quantum master equation
AU - Hamilton, Alastair
PY - 2009/8
Y1 - 2009/8
N2 - In this paper we describe a construction which produces classes in compactifications of the moduli space of curves. This construction extends a construction of Kontsevich which produces classes in the open moduli space from the initial data of a cyclic A∞-algebra. The initial data for our construction are what we call a 'quantum A∞-algebra', which arises as a type of deformation of a cyclic A∞-algebra. The deformation theory for these structures is described explicitly. We construct a family of examples of quantum A∞-algebras which extend a family of cyclic A∞-algebras, introduced by Kontsevich, which are known to produce all the kappa classes using his construction.
AB - In this paper we describe a construction which produces classes in compactifications of the moduli space of curves. This construction extends a construction of Kontsevich which produces classes in the open moduli space from the initial data of a cyclic A∞-algebra. The initial data for our construction are what we call a 'quantum A∞-algebra', which arises as a type of deformation of a cyclic A∞-algebra. The deformation theory for these structures is described explicitly. We construct a family of examples of quantum A∞-algebras which extend a family of cyclic A∞-algebras, introduced by Kontsevich, which are known to produce all the kappa classes using his construction.
KW - A-algebra
KW - Deformation theory
KW - Maurer-Cartan set
KW - Moduli space of curves
KW - Noncommutative geometry
UR - http://www.scopus.com/inward/record.url?scp=70349219924&partnerID=8YFLogxK
U2 - 10.1007/s11005-009-0310-y
DO - 10.1007/s11005-009-0310-y
M3 - Article
AN - SCOPUS:70349219924
SN - 0377-9017
VL - 89
SP - 115
EP - 130
JO - Letters in Mathematical Physics
JF - Letters in Mathematical Physics
IS - 2
ER -