Coarse graining and first order phase transitions
J. Berges, N. Tetradis, C. Wetterich
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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