Effective Action and Renormalization Group Flow of Anisotropic Superconductors

Details Effective Action and Renormalization Group Flow of Anisotropic Superconductors Effective Action and Renormalization Group Flow of Anisotropic Superconductors

1993-06-27

arxiv.org/abs/cond-mat/9306055v1

Nucl.Phys. B413 (1994) 567-578

Physics

Condensed Matter

19 pages including title page, Texas preprint UTTG-18-93

Scientific paper

10.1016/0550-3213(94)90001-9

We calculate the effective action of a superconductor, without assuming that either the electron-electron potential or the Fermi surface obey rotational invariance. This approach leads to the same gap equation and equilibrium free energy as more conventional methods. The results are used to obtain the Gell-Mann - Low renormalization group equations for the electron-electron potential.

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