Weakly Interacting Bose Mixtures at Finite Temperature

Abstract

Motivated by the recent experiments on Bose-Einstein mixtures with tunable interactions we study repulsive weakly interacting Bose mixtures at finite temperature. We obtain phase diagrams using Hartree-Fock theory which are directly applicable to experimentally trapped systems. Almost all features of the diagrams can be characterized using simple physical insights. Our work reveals two surprising effects which are dissimilar to a system at zero temperature. First of all, no pure phases exist, that is, at each point in the trap, particles of both species are always present. Second, even for very weak interspecies repulsion when full mixing is expected, condensate particles of both species may be present in a trap without them being mixed.

4 pages, 2 figures

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Cited by in corpus (15)

• Static interfacial properties of Bose-Einstein condensate mixtures
• Thermal suppression of phase separation in condensate mixtures
• Quantum and thermal fluctuations in two-component Bose gases
• Magnetic phase transition in a mixture of two interacting Bose gases at finite temperature
• Critical wetting, first-order wetting and prewetting phase transitions in binary mixtures of Bose-Einstein condensates
• Thermodynamics of dilute Bose gases: Beyond mean-field theory for binary mixtures of Bose-Einstein condensate
• Weakly nonadditive Polychronakos statistics
• Finite temperature spin dynamics of a two-dimensional Bose-Bose atomic mixture
• Phase separation in binary Bose mixtures at finite temperature
• Self-consistent theory of a homogeneous binary Bose mixture with strong repulsive interspecies interaction
• Large-$N$ expansion for condensation and stability of Bose-Bose mixtures at finite temperatures
• Thermal suppression of demixing dynamics in a binary condensate
• First-order, continuous, and multicritical Bose-Einstein condensation in Bose mixtures
• Spin-orbit coupled mean-field Bose gas at finite temperature
• Phase diagram of two-component mean-field Bose mixtures