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Dynamics of highly unbalanced Bose-Bose mixtures: miscible vs. immiscible gases (Articolo in rivista)

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Dynamics of highly unbalanced Bose-Bose mixtures: miscible vs. immiscible gases (Articolo in rivista) (literal)

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Alternative label

Sartori, Alberto; Recati, Alessio (2013)
Dynamics of highly unbalanced Bose-Bose mixtures: miscible vs. immiscible gases
in The European physical journal. D, Atomic, molecular and optical physics (Print)
(literal)

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INO-CNR BEC Center, Dipartimento di Fisica, Università di Trento, 38123 Povo, Italy (literal)

Titolo

Dynamics of highly unbalanced Bose-Bose mixtures: miscible vs. immiscible gases (literal)

Abstract

We study the collective modes of the minority component of a highly unbalanced Bose-Bose mixture. In the miscible case the minority component feels an effective external potential and we derive an analytical expression for the mode frequencies. The latter is independent of the minority component interaction strength. In the immiscible case we find that the ground state can be a two-domain walls soliton. Although the mode frequencies are continuous at the transition, their behaviour is very different with respect to the miscible case. The dynamical behaviour of the solitonic structure and the frequency dependence on the inter- and intra-species interaction is numerically studied using coupled Gross-Pitaevskii equations. (literal)

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