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arXiv · hep-th/9406131

Observations on the Topological Structure in 2d Gravity Coupled to Minimal Matter

P. M. Llatas·S. Roy
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Abstract

By using a bosonization we uncover the topological gravity structure of Labastida, Pernici and Witten in ordinary $2d$ gravity coupled to $(p,q)$ minimal models. We study the cohomology class associated with the fermionic charge of the topological gravity which is shown to be isomorphic to that of the total $BRST$ charge. One of the ground ring generators of $c_M <1$ string theory is found to be in the equivariant cohomology of this fermionic charge.

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P. M. Llatas, S. Roy. 1994-10-19. Observations on the Topological Structure in 2d Gravity Coupled to Minimal Matter. https://doi.org/10.1016/0370-2693(94)01408-5

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