Large-$N$ expansion for condensation and stability of Bose-Bose mixtures at finite temperatures

Abstract

The two-component mixture of Bose particles with short-range pairwise interaction at finite temperatures in three dimensions is considered. Particularly we examine, by means of the large-$N$ expansion technique, the stability of mixed state below the Bose-Einstein transition point and the temperature dependence of the condensate density for symmetric mixture of Bose gases. The presented analysis reveals the importance of finite-temperature excitations of the non-condensed particles in formation of the phase diagram of two-component Bose systems.

6 pages, 5 figures

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Cited by in corpus (5)

• Thermal instability, evaporation and thermodynamics of one-dimensional liquids in weakly-interacting Bose-Bose mixtures
• Mixed bubbles in Bose-Bose mixtures
• Self-consistent theory of a homogeneous binary Bose mixture with strong repulsive interspecies interaction
• Weakly-interacting Bose-Bose mixtures from the functional renormalisation group
• Shift of the Bose-Einstein condensation transition in the presence of a second atomic species