Quantum demixing in binary mixtures of dipolar bosons

Journal Article · Tue Feb 15 04:00:00 EST 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.023602· OSTI ID:21537192

Jain, Piyush; Boninsegni, Massimo ^[1]

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1. Department of Physics, University of Alberta, Edmonton, Alberta (Canada)

Quantum Monte Carlo simulations of a two-component Bose mixture of trapped dipolar atoms of identical masses and dipole moments, provide numerical evidence of demixing at low finite temperatures. Demixing occurs as a consequence of quantum statistics, which results in an effective attraction between like bosons. Spatial separation of two components takes place at low temperature with the onset of long exchanges of identical particles, underlying Bose-Einstein condensation of both components. Conversely, at higher temperature the system is miscible due to the entropy of mixing. Exchanges are also found to enhance demixing in the case of mixtures of nonidentical and distinguishable species.

• OSTI ID: 21537192
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 83; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
BINARY MIXTURES
BOSE-EINSTEIN CONDENSATION
BOSONS
CALCULATION METHODS
COMPUTERIZED SIMULATION
DIPOLE MOMENTS
DISPERSIONS
ENTROPY
MATHEMATICS
MIXTURES
MONTE CARLO METHOD
PHYSICAL PROPERTIES
SIMULATION
STATISTICS
TEMPERATURE RANGE
TEMPERATURE RANGE 0065-0273 K
THERMODYNAMIC PROPERTIES
TRAPPING