Showing papers by "Suresh Govindarajan published in 1993"
TL;DR: The chiral ring is a ring of polynomials in two variables modulo an equivalence relation of the form x p ≃ y p+1 for the (p+1, p) model as discussed by the authors.
21 citations
TL;DR: It is shown that for minimal models coupled to gravity, agreement with the matrix model results on analytically continuing in the number of cosmological constant operators and matter-screening operators is obtained.
Abstract: We compute [ital N]-point correlation functions of pure vertex operator states (DK states) for minimal models coupled to gravity. We obtain agreement with the matrix model results on analytically continuing in the number of cosmological constant operators and matter-screening operators. We illustrate this for the cases of the (2[ital k][minus]1,2) and ([ital p]+1,[ital p]) models.
11 citations
TL;DR: In this paper, the string tree level correlation functions of vertex operators in $c < 1$ string theory are computed by using the ring structure of the theory and the correlation functions after perturbation by physical vertex operators.
Abstract: We compute all string tree level correlation functions of vertex operators in $c<1$ string theory. This is done by using the ring structure of the theory. In order to study the multicritical behaviour, we calculate the correlation functions after perturbation by physical vertex operators. We show that the $(2k-1,2)$ models can be obtained from the $(1,2)$ model and the minimal models can be obtained from the $(1,p)$ model by perturbing the action by appropriate physical operators. Our results are consistent with known results from matrix models.
1 citations
01 Jan 1993
TL;DR: In this article, the authors show how these states are related to states at ghost numbers zero (pure vertex operator states -- DK states) and ghost number one (ring elements) by means of descent equations.
Abstract: The BRST cohomology analysis of Lian and Zuckerman leads to physical states at all ghost number for $c<1$ matter coupled to Liouville gravity. We show how these states are related to states at ghost numbers zero(pure vertex operator states -- DK states) and ghost number one(ring elements) by means of descent equations. These descent equations follow from the double cohomology of the String BRST and Felder BRST operators. We briefly discuss how the ring elements allow one to determine all correlation functions on the sphere.