Nonequilibrium Cooper pairing in the nonadiabatic regime

Details Nonequilibrium Cooper pairing in the nonadiabatic regime Nonequilibrium Cooper pairing in the nonadiabatic regime

2005-05-19

arxiv.org/abs/cond-mat/0505493v2

Phys. Rev. B 72, 220503(R) (2005).

Physics

Condensed Matter

Superconductivity

4 pages, no figures

Scientific paper

10.1103/PhysRevB.72.220503

We obtain a complete solution for the mean-field dynamics of the BCS paired state with a large, but finite number of Cooper pairs in the non-adiabatic regime. We show that the problem reduces to a classical integrable Hamiltonian system and derive a complete set of its integrals of motion. The condensate exhibits irregular multi-frequency oscillations ergodically exploring the part of the phase-space allowed by the conservation laws. In the thermodynamic limit however the system can asymptotically reach a steady state.

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