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arXiv · 1702.08204

Dynamics of phase separation in two species Bose-Einstein condensates with vortices

Soumik Bandyopadhyay·Arko Roy·D. Angom
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Abstract

We examine the dynamics associated with the miscibility-immiscibility transition of trapped two-component Bose-Einstein condensates (TBECs) of dilute atomic gases in presence of vortices. In particular, we consider TBECs of Rb hyperfine states, and Rb-Cs mixture. There is an enhancement of the phase-separation when the vortex is present in both condensates. In the case of a singly charged vortex in only one of the condensates, there is enhancement when the vortex is present in the species which occupy the edges at phase-separation. But, suppression occurs when the vortex is in the species which occupies the core region. To examine the role of the vortex, we quench the inter-species interactions to propel the TBEC from miscible to immiscible phase, and use the time dependent Gross-Pitaevskii equation to probe the phenomenon of phase-separation. We also examine the effect of higher charged vortex.

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Soumik Bandyopadhyay, Arko Roy, D. Angom. 2017-02-27. Dynamics of phase separation in two species Bose-Einstein condensates with vortices. https://doi.org/10.1103/physreva.96.043603

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