Dynamics of emergent Cooper pairing at finite temperatures
Emil A. Yuzbashyan, Oleksandr Tsyplyatyev
DOI 10.1103/PhysRevB.79.132504 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We study the time evolution of a system of fermions with pairing interactions at a finite temperature. The dynamics is triggered by an abrupt increase in the BCS coupling constant. We show that if initially the fermions are in a normal phase, the amplitude of the BCS order parameter averaged over the Boltzmann distribution of initial states exhibits damped oscillations with a relatively short decay time. The latter is determined by the temperature, the single-particle level spacing, and the ground-state value of the BCS gap for the new coupling. In contrast, the decay is essentially absent when the system was in a superfluid phase before the coupling increase.
Similar papers
Nonequilibrium cooper pairing in the nonadiabatic regime
similarity 0.92Emil A. Yuzbashyan et al.
Source status unknown — claims are unverified
Cooper Pairing Above the Critical Temperature in a Unitary Fermi Gas
similarity 0.91Gabriel Wlazłowski et al.
Source status unknown — claims are unverified
Pairing Fluctuation Effects on the Single-Particle Spectra for the Superconducting State
similarity 0.90P. Pieri et al.
Source status unknown — claims are unverified
Superconducting phase transition in a two-dimensional Chern-Simons theory
similarity 0.90J. Kapusta et al.
Source status unknown — claims are unverified
Coupled electronic and magnetic excitations in the cuprates and their role in the superconducting transition
similarity 0.90Francisco Restrepo et al. · 2022 · arXiv:2204.06599
Source status unknown — claims are unverified
Phase Fluctuations in Strongly Coupled d-Wave Superconductors
similarity 0.89Matthias Mayr et al.
Source status unknown — claims are unverified