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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Stability of a Bose-condensed mixture on a bubble trap

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Author(s):
Andriati, Alex [1] ; Brito, Leonardo [1] ; Tomio, Lauro [2] ; Gammal, Arnaldo [1]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo - Brazil
[2] Univ Estadual Paulista, Inst Fis Teor, BR-01156970 Sao Paulo, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Physical Review A; v. 104, n. 3 SEP 23 2021.
Web of Science Citations: 0
Abstract

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)

FAPESP's process: 16/17612-7 - Dynamics of many-body systems IV
Grantee:Arnaldo Gammal
Support type: Research Projects - Thematic Grants
FAPESP's process: 18/02737-4 - Many-body properties of Bose-Einstein condensates from multi configurational time-dependent Hartree method
Grantee:Alex Valerio Andriati
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 17/05660-0 - Theoretical studies of the structure and reactions of exotic nuclei and many-body systems
Grantee:Brett Vern Carlson
Support type: Research Projects - Thematic Grants