Phase diagram of two-component mean-field Bose mixtures

Abstract

We revisit the structure of the phase diagram of the two-component mean-field Bose mixture at finite temperatures, considering both the cases of attractive and repulsive interspecies interactions. In particular, we analyze the evolution of the phase diagram upon driving the system towards collapse and point out its distinctive features in this limit. We provide analytical insights into the global structure of the phase diagram and the properties of the phase transitions between the normal phase and the phases involving Bose-Einstein condensates. \emph{Inter alia} we analytically demonstrate that for sufficiently weak interspecies interactions $a_{12}$ the system generically exhibits a line of quadruple points but has no triple nor tricritical points in the phase diagram spanned by the chemical potentials ${\mu }_1$, ${\mu }_2$ and temperature $T$. In contrast, for sufficiently large, positive values of $a_{12}$, the system displays both triple and tricritical points but no quadruple points. As pointed out in recent studies, in addition to the phase transitions involving condensation, the mixture may be driven through a liquid-gas type transition, and we clarify the conditions for its occurrence. We finally discuss the impact of interaction- and mass-imbalance on the phase diagram of the mixture.

References in corpus (54)

• The dynamics of component separation in a binary mixture of Bose-Einstein condensates
• Stable 85Rb Bose-Einstein Condensates with Widely Tunable Interactions
• Phase separation of Bose-Einstein condensates
• Quantum phases from competing short- and long-range interactions in an optical lattice
• Controlling collapse in Bose-Einstein condensates by temporal modulation of the scattering length
• Phase diagram of two-component bosons on an optical lattice
• Binary Bose-Einstein Condensate Mixtures in Weakly and Strongly Segregated Phases
• Collapse and Bose-Einstein condensation in a trapped Bose-gas with negative scattering length
• Degenerate Bose-Bose mixture in a three-dimensional optical lattice
• Dual-Species Bose-Einstein Condensate of ${}^{87}$Rb and ${}^{133}$Cs
• Non-Equilibrium Dynamics and Superfluid Ring Excitations in Binary Bose-Einstein Condensates
• Growth and Collapse of a Bose Condensate with Attractive Interactions
• Superfluidity of Interacting Bosonic Mixtures in Optical Lattices
• Hartree-Fock treatment of the two-component Bose-Einstein condensate
• Topology of the ground state of two interacting Bose-Einstein condensates
• Magnetic phases of two-component ultracold bosons in an optical lattice
• Spatially inhomogeneous phase evolution of a two-component Bose-Einstein condensate
• Collapse of spin-orbit coupled Bose-Einstein condensates
• Critical entropies for magnetic ordering in bosonic mixtures on a lattice
• Thermal suppression of phase separation in condensate mixtures
• Quantum and thermal fluctuations in two-component Bose gases
• Demixing Effects in Mixtures of Two Bosonic Species
• Magnetic phase transition in a mixture of two interacting Bose gases at finite temperature
• Time-of-flight expansion of binary Bose-Einstein condensates at finite temperature
• Casimir force induced by imperfect Bose gas
• Effective interactions in a quantum Bose-Bose mixture
• Thermodynamics of dilute Bose gases: Beyond mean-field theory for binary mixtures of Bose-Einstein condensate
• Weakly Interacting Bose Mixtures at Finite Temperature
• Beyond Thomas--Fermi analysis of the density profiles of a miscible two-component Bose--Einstein condensate
• The imperfect Bose gas in d dimensions: critical behavior and Casimir forces
• Miscibility and stability of dipolar bosonic mixtures
• Bose-Einstein condensation and critical behavior of two-component bosonic gases
• Dimensional crossovers and Casimir forces for the Bose gas in anisotropic optical lattices
• Fluctuation-induced forces in confined ideal and imperfect Bose gases
• Two-species hard-core bosons on the triangular lattice: A quantum Monte Carlo study
• BEC "level" for measuring small forces
• Phase separation of a Bose-Bose mixture: impact of the trap and particle number imbalance
• Breathing modes of repulsive polarons in Bose-Bose mixtures
• Phase diagram and multicritical behaviors of mixtures of 3D bosonic gases
• Attractive Solution of Binary Bose Mixtures: Liquid-Vapor Coexistence and Critical Point
• Binary mixtures of condensates in generic confining potentials
• Quantum criticality of the imperfect Bose gas in d dimensions
• Enhanced quantum spin fluctuations in a binary Bose-Einstein condensate
• Normal-Superfluid Phase Separation in Spin-Half Bosons at Finite Temperature
• Phase separation in binary Bose mixtures at finite temperature
• Functional renormalization for repulsive Bose-Bose mixtures at zero temperature
• Thermal critical dynamics from equilibrium quantum fluctuations
• Weakly-interacting Bose-Bose mixtures from the functional renormalisation group
• Metastable spin-phase diagrams in antiferromagnetic Bose-Einstein condensates
• First-order, continuous, and multicritical Bose-Einstein condensation in Bose mixtures
• Polarons in Binary Bose-Einstein Condensates
• Spin-orbit coupled mean-field Bose gas at finite temperature
• Number and spin densities in the ground state of a trapped mixture of two pseudospin-1/2 Bose gases with interspecies spin-exchange interaction
• Quantum Triticality of Bosonic Atomic-Molecular Mixtures with Feshbach Coupling

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• Thermal Casimir effect in the spin-orbit coupled Bose gas