Wave-function renormalization for the Coulomb-gas in Wegner-Houghton's RG method

Details Wave-function renormalization for the Coulomb-gas in Wegner-Houghton's RG method Wave-function renormalization for the Coulomb-gas in Wegner-Houghton's RG method

2000-12-21

arxiv.org/abs/hep-th/0012208v1

Phil.Mag. B81 (2001) 1615

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, 2 figures

Scientific paper

10.1080/13642810110043655

The RG flow for the sine-Gordon model is determined by means of the method of Wegner and Houghton in next-to-leading order of the derivative expansion. For small values of the fugacity this agrees with the well-known RG flow of the two-dimensional Coulomb-gas found in the dilute gas approximation and a systematic way of obtaining higher-order corrections to this approximation is given.

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