Dynamics of Dark Solitons in a Trapped Superfluid Fermi Gas

Anno: 2011

Autori: Scott R.G., Dalfovo F., Pitaevskii L.P., Stringari S.

Affiliazione autori: INO-CNR BEC Center and Dipartimento di Fisica, Università di Trento, Via Sommarive 14, I-38123 Povo, Italy;
Kapitza institute for physical problems, Kosygina 2, 119334 Moscow, Russia

Abstract: We study soliton oscillations in a trapped superfluid Fermi gas across the Bose-Einstein condensate to Bardeen-Cooper-Schrieffer (BEC-BCS) crossover. We derive an exact equation for the oscillation period in terms of observable quantities, which we confirm by solving the time-dependent Bogoliubov-de Gennes equations. Hence we reveal the appearance and dynamics of solitons across the crossover, and show that the period dramatically increases as the soliton becomes shallower on the BCS side of the resonance. Finally, we propose an experimental protocol to test our predictions.

Giornale/Rivista: PHYSICAL REVIEW LETTERS

Volume: 106 (18)      Da Pagina: 185301-1  A: 185301-4

Parole chiavi: Bright Solitons; Bose
DOI: 10.1103/PhysRevLett.106.185301

Citazioni: 81
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-12-01
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