Relaxation and Persistent Oscillations of the Order Parameter in Fermionic Condensates

Emil A. Yuzbashyan, Oleksandr Tsyplyatyev, and Boris L. Altshuler
Phys. Rev. Lett. 96, 097005 – Published 8 March 2006; Erratum Phys. Rev. Lett. 96, 179905 (2006)

Abstract

We determine the limiting dynamics of a fermionic condensate following a sudden perturbation for various initial conditions. Possible initial states of the condensate fall into two classes. In the first case, the order parameter asymptotes to a constant value. The approach to a constant is oscillatory with an inverse square root decay. This happens, e.g., when the strength of pairing is abruptly changed while the system is in the paired ground state and more generally for any nonequilibrium state that is in the same class as the ground state. In the second case, the order parameter exhibits persistent oscillations with several frequencies. This is realized for nonequilibrium states that belong to the same class as excited stationary states.

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  • Received 13 December 2005

DOI:https://doi.org/10.1103/PhysRevLett.96.097005

©2006 American Physical Society

Erratum

Erratum: Relaxation and Persistent Oscillations of the Order Parameter in Fermionic Condensates [Phys. Rev. Lett. 96, 097005 (2006)]

Emil A. Yuzbashyan, Oleksandr Tsyplyatyev, and Boris L. Altshuler
Phys. Rev. Lett. 96, 179905 (2006)

Authors & Affiliations

Emil A. Yuzbashyan1, Oleksandr Tsyplyatyev2, and Boris L. Altshuler3,4

  • 1Center for Materials Theory, Rutgers University, Piscataway, New Jersey 08854, USA
  • 2Physics Department, Lancaster University, Lancaster LA1 4YB, United Kingdom
  • 3Physics Department, Columbia University, New York, New York 10027, USA
  • 4NEC-Laboratories America, 4 Independence Way, Princeton, New Jersey 085540, USA

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Issue

Vol. 96, Iss. 9 — 10 March 2006

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