Effective average action in statistical physics and quantum field theory

Details Effective average action in statistical physics and quantum field theory Effective average action in statistical physics and quantum field theory

2001-01-16

arxiv.org/abs/hep-ph/0101178v1

Int.J.Mod.Phys. A16 (2001) 1951-1982

Physics

High Energy Physics

High Energy Physics - Phenomenology

34 pages,5 figures,LaTex

Scientific paper

10.1142/S0217751X01004591

An exact renormalization group equation describes the dependence of the free energy on an infrared cutoff for the quantum or thermal fluctuations. It interpolates between the microphysical laws and the complex macroscopic phenomena. We present a simple unified description of critical phenomena for O(N)-symmetric scalar models in two, three or four dimensions, including essential scaling for the Kosterlitz-Thouless transition.

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