Effective Free Energy of Ginzburg-Landau Model

Details Effective Free Energy of Ginzburg-Landau Model Effective Free Energy of Ginzburg-Landau Model

2001-06-21

arxiv.org/abs/cond-mat/0106442v1

Fluctuating Paths and Fields, edited by W. Janke et al. (World Scientific, Singapore, 2001)

Physics

Condensed Matter

6 pages, contribution to the Festschrift dedicated to Professor Kleinert on the occasion of his 60th birthday

Scientific paper

It is argued that the presence of a nonanalytic term in the effective potential of the Ginzburg-Landau model is immaterial as far as the order of the superconductor-normal phase transition is concerned. To achieve agreement with the renormalization group, the effective potential has to be extended to include derivative terms, which provide the theory with a low momentum scale which can be varied to probe the (possible) fixed point.

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