Time-dependent Ginzburg-Landau model with noise for neutral s-wave superconductor
Abstract
Time-dependent Ginzburg-Landau model with noise for neutral s-wave superconductor is derived from real-time finite-temperature quantum field theory by integrating over fermions in the density matrix propagator. Quantum decoherence due to environment of pair breaking fluctuations is identified. Dynamics is described by Langevin equation in the near critical regime and by a nonlinear Schrodinger equation at zero temperature.
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