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arXiv · hep-th/9302027

c=1 String Theory as a Topological G/G Model

O. Aharony·O. Ganor·J. Sonnenschein·S. Yankielowicz
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Abstract

The physical states on the free field Fock space of the ${SL(2,R)\over SL(2,R)$ model at any level are computed. Using a similarity transformation on $Q_{BRST}$, the cohomology of the latter is mapped into a direct sum of simpler cohomologies. We show a one to one correspondence between the states of the $k=-1$ model and those of the $c=1$ string model. A full equivalence between the ${SL(2,R)\over SL(2,R)$ and ${SL(2,R)\over U(1)$ models at the level of their Fock space cohomologies is found.

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O. Aharony, O. Ganor, J. Sonnenschein, S. Yankielowicz. 1993-02-08. c=1 String Theory as a Topological G/G Model. https://doi.org/10.1016/0370-2693(93)91102-s

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