Binary mixtures of condensates in generic confining potentials

We study a binary mixture of Bose-Einstein condensates, confined in a generic potential, in the Thomas-Fermi approximation. We search for the zero-temperature ground state of the system, both in the case of fixed numbers of particles and fixed chemical potentials. For generic potentials, we analyze...

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Bibliographic Details
Published inJournal of physics. A, Mathematical and theoretical Vol. 44; no. 50; pp. 505305 - 18
Main Authors Facchi, P, Florio, G, Pascazio, S, Pepe, F V
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 16.12.2011
IOP
Subjects
Approximation
Binary mixtures
Bose-Einstein condensates
Confining
Criteria
Domain walls
Exact sciences and technology
Mathematical analysis
Particles (of physics)
Physics
Stability
Energetics
Ground states
Domain walls
Positions
Chemical potential
Thomas-Fermi model
Temperature zero K
Bose-Einstein condensation
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Summary:We study a binary mixture of Bose-Einstein condensates, confined in a generic potential, in the Thomas-Fermi approximation. We search for the zero-temperature ground state of the system, both in the case of fixed numbers of particles and fixed chemical potentials. For generic potentials, we analyze the transition from mixed to separated ground-state configurations as the interspecies interaction increases. We derive a simple formula that enables one to determine the location of the domain walls. Finally, we find criteria for the energetic stability of separated configurations, depending on the number and the position of the domain walls separating the two species.
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ISSN:1751-8121
1751-8113
1751-8121
DOI:10.1088/1751-8113/44/50/505305