Mass-imbalanced Bose-Einstein condensed mixtures in rotating perturbed trap

Autor(es)

Kumar, R. Kishor ^{[1, 2, 3]} ; Gammal, A. ^[4] ; Tomio, Lauro ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, UNESP, Inst Fis Teor, BR-01140070 Sao Paulo - Brazil

^[2] Univ Otago, Ctr Quantum Sci, Dept Phys, Dunedin 9054 - New Zealand

^[3] Univ Otago, Dodd Walls Ctr Photon & Quantum Technol, Dunedin 9054 - New Zealand

^[4] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Physics Letters A; v. 384, n. 22 AUG 6 2020.
• Citações Web of Science: 0

Resumo

We consider the mass-imbalanced sensibility for the emergence of vortex patterns in the Bose-Einstein condensed binary mixture of rubidium-cesium ((RbCs)-Rb-85-Cs-133), confined in quasi-two-dimensional harmonic traps, with one species linearly perturbed in one direction. Non-dipolar coupled species are chosen to highlight mass symmetry effects. We first analyze the condensed mixture in the unperturbed non-rotating regime, where radial phase separation is verified in the immiscible regime, which occurs for large ratio between inter- and intra-species repulsive interactions. By going to the linear perturbed regime, the radial phase separation that occurs in the immiscible condition splits up with the two densities having their maxima at distinct positions. In the rotating regime of both unperturbed and perturbed cases, the minimum rotation is determined in terms of the inter-species interaction to observe vortex structures. In the immiscible regime a dramatic spatial interchange between the species is verified by increasing the rotation. (C) 2020 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 16/17612-7 - Dinâmica de sistemas de muitos corpos IV
• Beneficiário: Arnaldo Gammal
• Modalidade de apoio: Auxílio à Pesquisa - Temático