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Two-loop beta functions of the Sine-Gordon model

Janos Balog, Arpad Hegedus

hep-tharXiv:hep-th/0003258

Abstract

We recalculate the two-loop beta functions in the two-dimensional Sine-Gordon model in a two-parameter expansion around the asymptotically free point. Our results agree with those of Amit et al., J. Phys. A13 (1980) 585.

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