The Gravitational Sine-Gordon Model
نویسنده
چکیده
We use matrix model results to investigate the Sine-Gordon model coupled to two dimensional gravity. For relevant (in the RG sense) potentials, we show that the c = 1 string, which appears in the ultraviolet limit of this model, flows to a set of decoupled c = 0 (pure gravity) models in the infrared. The torus partition sum, which was argued previously to count the number of string degrees of freedom and hence satisfy a new c – theorem, is shown to be a monotonically decreasing function of the scale (given by the quantum area of the world-sheet). The model discussed describes an interesting time dependent solution of two dimensional string theory.
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