Relaxation and persistent oscillations of the order parameter in fermionic condensates

Emil A. Yuzbashyan, Oleksandr Tsyplyatyev, Boris L. Altshuler

Research output: Contribution to journalArticlepeer-review

159 Scopus citations


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.

Original languageEnglish (US)
Article number097005
JournalPhysical review letters
Issue number9
StatePublished - 2006

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Relaxation and persistent oscillations of the order parameter in fermionic condensates'. Together they form a unique fingerprint.

Cite this