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Nonequilibrium Cooper pairing in the nonadiabatic regime

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arxiv cond-mat/0505493 v2 pith:SI67B4SZ submitted 2005-05-19 cond-mat.supr-con

Nonequilibrium Cooper pairing in the nonadiabatic regime

classification cond-mat.supr-con
keywords completecooperregimestatesystemallowedasymptoticallyclassical
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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