Functional renormalization group approach to the sine-Gordon model

Abstract

The renormalization group flow is presented for the two-dimensional sine-Gordon model within the framework of the functional renormalization group method by including the wave-function renormalization constant. The Kosterlitz-Thouless-Berezinski type phase structure is recovered as the interpolating scaling law between two competing IR attractive area of the global renormalization group flow.

4 pages, 3 figures

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• Renormalization of the bilocal sine-Gordon model
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• Higher-derivative four-dimensional sine-Gordon model