Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1994-05-26
Phys.Lett. B335 (1994) 416-422
Physics
High Energy Physics
High Energy Physics - Theory
LaTeX file, 11 pages, SISSA/ISAS 67/94/EP, IFUM 469/FT [one reference corrected]
Scientific paper
10.1016/0370-2693(94)90372-7
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 ({\sl antighost} $\times$ {\sl 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.
Anselmi Damiano
Fre' Pietro
Girardello Luciano
Soriani Paolo
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