Risultati scientifici

Persistent currents in two-component condensates in a toroidal trap

Anno: 2014

Autori: Abad M., Sartori A., Finazzi S., Recati A.

Affiliazione autori: INO-CNR BEC Center and Dipartimento di Fisica, Università di Trento, 38123 Povo, Italy; Laboratoire Matériaux et Phénomènes Quantiques, Université Paris Diderot-Paris 7 and CNRS, Bâtiment Condorcet, 75205 Paris Cedex 13, France

Abstract: The stability of persistent currents in a two-component Bose-Einstein condensate in a toroidal trap is studied in both the miscible and the immiscible regimes. In the miscible regime we show that superflow decay is related to linear instabilities of the spin-density Bogoliubov mode. We find a region of partial stability, where the flow is stable in the majority component while it decays in the minority component. We also characterize the dynamical instability appearing for a large relative velocity between the two components. In the immiscible regime the stability criterion is modified and depends on the specific density distribution of the two components. The effect of a coherent coupling between the two components is also discussed.

Giornale/Rivista: PHYSICAL REVIEW A

Volume: 89 (5)      Da Pagina: 053602  A: 053602

Maggiori informazioni: We acknowledge stimulating discussions with I. Carusotto, Z. Hadzibabic, and T. Ozawa. This work has been financially supported by ERC through the QGBE grant and by Provincia Autonoma di Trento.
DOI: 10.1103/PhysRevA.89.053602

Citazioni: 22
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2022-01-23
Riferimenti tratti da Isi Web of Knowledge: (solo abbonati)
Link per visualizzare la scheda su IsiWeb: Clicca qui
Link per visualizzare la citazioni su IsiWeb: Clicca qui

This site uses cookies. If you decide to continue browsing we consider that you accept their use. For more information about cookies and how to delete them please read our Info Policy on cookies use.
Read more