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Coarse graining and first order phase transitions

J. Berges, N. Tetradis, C. Wetterich

hep-pharXiv:hep-ph/9610354

Abstract

We discuss the dependence of the coarse grained free energy and the classical interface tension on the coarse graining scale k. A stable range appears only if the renormalized dimensionless couplings at the critical temperature are small. This gives a quantitative criterion for the validity of computations within Langer's theory of spontaneous bubble nucleation.

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