Solitonic vortices in Bose-Einstein condensates
Anno: 2015
Autori: Tylutki M., Donadello S., Serafini S., Pitaevskii L.P., Dalfovo F., Lamporesi G., Ferrari G.
Affiliazione autori: INO-CNR BEC Center and Dipartimento di Fisica, Università di Trento, 38123 Povo, Italy
Abstract: We analyse, theoretically and experimentally, the nature of solitonic vortices (SV) in an elongated Bose-Einstein condensate. In the experiment, such defects are created via the Kibble-Zurek mechanism, when the temperature of a gas of sodium atoms is quenched across the BEC transition, and are imaged after a free expansion of the condensate. By using the Gross-Pitaevskii equation, we calculate the in-trap density and phase distributions characterizing a SV in the crossover from an elongated quasi-1D to a bulk 3D regime. The simulations show that the free expansion strongly amplifies the key features of a SV and produces a remarkable twist of the solitonic plane due to the quantized vorticity associated with the defect. Good agreement is found between simulations and experiments.
Giornale/Rivista: EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
Volume: 224 (3) Da Pagina: 577 A: 583
Maggiori informazioni: We thank J. Brand, C. Tozzo and M. Zwierlein for stimulating discussions. We acknowledge financial support by Provincia Autonoma di Trento and by PL-Grid Infrastructure.DOI: 10.1140/epjst/e2015-02389-7Citazioni: 17dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-03-24Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui