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arXiv · hep-th/9304039

c=1 String as a Topological Model

H. Ishikawa·M. Kato
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Abstract

The discrete states in the $c=1$ string are shown to be the physical states of a certain topological sigma model. We define a set of new fields directly from $c=1$ variables, in terms of which the BRST charge and energy-momentum tensor are rewritten as those of the topological sigma model. Remarkably, ground ring generator $x$ turns out to be a coordinate of the sigma model. All of the discrete states realize a graded ring which contains ground ring as a subset.

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H. Ishikawa, M. Kato. 1993-12-30. c=1 String as a Topological Model. https://doi.org/10.1142/s0217751x94002387

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