Quantum demixing in binary mixtures of dipolar bosons

Journal Article · Tue Feb 15 00:00:00 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, Vol. 83, Issue 2; Other Information: DOI: 10.1103/PhysRevA.83.023602; (c) 2011 American Institute of Physics; ISSN 1050-2947
• 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
COMPUTERIZED SIMULATION
DIPOLE MOMENTS
ENTROPY
MONTE CARLO METHOD
STATISTICS
TEMPERATURE RANGE 0065-0273 K
TRAPPING
CALCULATION METHODS
DISPERSIONS
MATHEMATICS
MIXTURES
PHYSICAL PROPERTIES
SIMULATION
TEMPERATURE RANGE
THERMODYNAMIC PROPERTIES