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arXiv · hep-th/9111048

Ground Rings and Their Modules in 2D Gravity with $c\le 1$ Matter

D. Kutasov·E. Martinec·N. Seiberg
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Abstract

All solvable two-dimensional quantum gravity models have non-trivial BRST cohomology with vanishing ghost number. These states form a ring and all the other states in the theory fall into modules of this ring. The relations in the ring and in the modules have a physical interpretation. The existence of these rings and modules leads to nontrivial constraints on the correlation functions and goes a long way toward solving these theories in the continuum approach.

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D. Kutasov, E. Martinec, N. Seiberg. 1991-11-23. Ground Rings and Their Modules in 2D Gravity with $c\le 1$ Matter. https://doi.org/10.1016/0370-2693(92)91664-u

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