We derive a model of constrained topological gravity, a theory recently introduced by us through the twist of N = 2 Liouville theory, starting from the general BRST algebra and imposing the moduli space constraint as a gauge fixing. To do this, it is necessary to introduce a formalism that allows a careful treatment of the global and the local degrees of freedom of the fields. Surprisingly, the moduli space constraint arises from the simplest and most natural gauge-fermion (antighost x Lagrange multiplier), confirming the previous results. The simplified technical set-up provides a deeper understanding for constrained topological gravity and a convenient framework for future investigations, like the matter coupling and the analysis of the effects of the constraint on the holomorphic anomaly.
|Autori:||ANSELMI D; FRE P; GIRARDELLO L; SORIANI P|
|Titolo:||CONSTRAINED TOPOLOGICAL FIELD-THEORY|
|Anno del prodotto:||1994|
|Digital Object Identifier (DOI):||10.1016/0370-2693(94)90372-7|
|Appare nelle tipologie:||1.1 Articolo in rivista|