Showing papers by "Suresh Govindarajan published in 1991"
TL;DR: In this article, the authors show how to construct topological N = 1 and 2 supergravity theories from appropriately constrained N = 3 and 4 ghost plus matter systems, and give a description of the relevant supermoduli spaces which must be integrated to obtain the amplitudes.
10 citations
TL;DR: In this article, the double cohomology of the string BRST and Felder BRST charges is used to map ghost number conserving correlation functions involving non-zero ghost number states into those involving states outside the primary conformal grid.
Abstract: We study $c<1$ matter coupled to gravity in the Coulomb gas formalism using the double cohomology of the string BRST and Felder BRST charges. We find that states outside the primary conformal grid are related to the states of non-zero ghost number by means of descent equations given by the double cohomology. Some aspects of the Virasoro structure of the Liouville Fock space are studied. As a consequence, states of non-zero ghost number are easily constructed by ``solving'' these descent equations. This enables us to map ghost number conserving correlation functions involving non-zero ghost number states into those involving states outside the primary conformal grid.
7 citations
TL;DR: In this article, a geometric interpretation for the torsion constraints in (2,0) supergravity using G-structures is presented, leading to a classification of the constraints as given by Ref.
Abstract: We present a geometric interpretation for the torsion constraints in (2,0) supergravity using G-structures. This leads to a classification of the constraints as given by Ref. 1. We also present the essential torsion constraints for (p,q) geometry.
1 citations