Flux-vacua in Two Dimensional String Theory

Abstract

We analyze the two dimensional type 0 theory with background RR-fluxes. Both the 0A and the 0B theory have two distinct fluxes $q$ and $\tilde{q}$. We study these two theories at finite temperature (compactified on a Euclidean circle of radius $R$) as a function of the fluxes, the tachyon condensate $\mu$ and the radius $R$. Surprisingly, the dependence on $q$, $\tilde{q}$ and $\mu$ is rather simple. The partition function is the absolute value square of a holomorphic function of $y=|q|+|\tilde{q}|+i\sqrt{2{\alpha }^{\prime }}\mu$ (up to a simple but interesting correction). As expected, the 0A and the 0B answers are related by T-duality. Our answers are derived using the exact matrix models description of these systems and are interpreted in the low energy spacetime Lagrangian.

41 pages, 4 figures, harvmac.tex

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