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Dark–bright solitons in a superfluid Bose–Fermi mixture

  Articoli su Riviste JCR/ISI  (anno 2016)

Autori:  Tylutki M., Recati A., Dalfovo F., Stringari S

Affiliazione Autori:  INO-CNR BEC Center and Dipartimento di Fisica, Università di Trento, Via Sommarive 14, I-38123 Povo, Italy Technische Universität München, James-Franck-Straße 1, D-85748 Garching, Germany

Riassunto:  The recent experimental realisation of Bose–Fermi superfluid mixtures of dilute ultracold atomic gases has opened new perspectives in the study of quantum many-body systems. Depending on the values of the scattering lengths and the amount of bosons and fermions, a uniform Bose–Fermi mixture is predicted to exhibit a fully mixed phase, a fully separated phase or, in addition, a purely fermionic phase coexisting with a mixed phase. The occurrence of this intermediate configuration has interesting consequences when the system is nonuniform. In this work we theoretically investigate the case of solitonic solutions of coupled Bogoliubov–de Gennes and Gross–Pitaevskii equations for the fermionic and bosonic components, respectively. We show that, in the partially separated phase, a dark soliton in Fermi superfluid is accompanied by a broad bosonic component in the soliton, forming a dark–bright soliton which keeps full spatial coherence.

Rivista/Giornale:  NEW JOURNAL OF PHYSICS
Volume n.:  18      Pagine da:  053014-1  a:  053014-8
Collegamento Web del Prodotto: Clicca qui

*Impact Factor della Rivista: (2016) 3.786
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  14/07/2019

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