Dynamics and Effective Actions of BCS Superconductors

Anne van Otterlo; Dmitrii S. Golubev; Andrei D. Zaikin; Gianni Blatter

paper

Dynamics and Effective Actions of BCS Superconductors

arXiv:cond-mat/9703124

Abstract

We derive effective dynamical theories for metals and BCS superconductors, based on the effective action formalism. Both the metallic regime $T ≳ T_{C}$ and the superconducting regime $T ≪ T_{C}$ are studied in the clean and dirty limit. Furthermore, we consider the effect of particle-hole asymmetry in the band structure. Using gauge invariance, the electrodynamics of the problem is formulated in a transparent way. The effective actions are useful starting points for treating dynamical problems involving BCS superconductors.

14 pages Revtex