Quantum de-mixing in binary mixtures of dipolar bosons

Details Quantum de-mixing in binary mixtures of dipolar bosons Quantum de-mixing in binary mixtures of dipolar bosons

2010-04-26

arxiv.org/abs/1004.4581v2

Physics

Condensed Matter

Quantum Gases

6 figures

Scientific paper

Quantum Monte Carlo simulations of a two-component Bose mixture of trapped dipolar atoms of identical masses and dipole moments, provide numerical evidence of de-mixing at low finite temperatures. De-mixing 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 de-mixing in the case of mixtures of non-identical and distinguishable species.

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