Stability of a Bose-condensed mixture on a bubble trap

Autor(es)

Andriati, Alex ^[1] ; Brito, Leonardo ^[1] ; Tomio, Lauro ^[2] ; Gammal, Arnaldo ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo - Brazil

^[2] Univ Estadual Paulista, Inst Fis Teor, BR-01156970 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Physical Review A; v. 104, n. 3 SEP 23 2021.
• Citações Web of Science: 0

Resumo

Stability and the dynamical behavior of binary Bose-Einstein condensed mixtures trapped on the surface of a rigid spherical shell are investigated at the mean-field level, exploring the miscibility with and without vortex charges and considering repulsive and attractive interactions. To compute the critical points for stability, we follow the Bogoliubov-de Gennes method for the analysis of perturbed solutions, with the constraint that initially the stationary states are in a complete miscible configuration. For the perturbed equal-density mixture of a homogeneous uniform gas and when hidden vorticity is verified, with the species having opposite azimuthal circulation, we consider a small perturbation analysis for each unstable mode, providing a complete diagram with the intra- and interspecies interaction role on the stability of the miscible system. Finally, beyond small-perturbation analysis, we explore the dynamics of some repulsive and attractive interspecies states by full numerical solutions of the time-dependent Gross-Pitaevskii equation. (AU)

• Processo FAPESP: 16/17612-7 - Dinâmica de sistemas de muitos corpos IV
• Beneficiário: Arnaldo Gammal
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 18/02737-4 - Propriedades de muitos corpos de Condensados de Bose-Einstein do método de Hartree multi configuracional dependente do tempo
• Beneficiário: Alex Valerio Andriati
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 17/05660-0 - Estudos teóricos da estrutura e reações de núcleos exóticos e sistemas de muitos corpos
• Beneficiário: Brett Vern Carlson
• Modalidade de apoio: Auxílio à Pesquisa - Temático