Kinetic Model of Trapped Finite Temperature Binary Condensates

Abstract

We construct a fully self-consistent non-equilibrium theory for the dynamics of two interacting finite-temperature atomic Bose-Einstein condensates. The condensates are described by dissipative Gross-Pitaevskii equations, coupled to quantum Boltzmann equations for the thermal atoms. The density-density interactions between atoms in different components facilitate a number of transport processes of relevance to sympathetic cooling: in particular, identification of an inter-component scattering process associated with collisional "exchange" of condensed and thermal atoms between the components, is found numerically to dominate close to equilibrium, for both realistic miscible and immiscible trapped atomic ${}^{87}$Rb-${}^{41}$K and ${}^{87}$Rb-${}^{85}$Rb condensate mixtures.

arXiv comment5 pages, 4 figures

References in corpus (42)

• Theory of Bose-Einstein condensation in trapped gases
• Artificial gauge potentials for neutral atoms
• The dynamics of component separation in a binary mixture of Bose-Einstein condensates
• Conserving and Gapless Approximations for an Inhomogeneous Bose Gas at Finite Temperatures
• Two-species mixture of quantum degenerate Bose and Fermi gases
• Double species condensate with tunable interspecies interactions
• A two atomic species superfluid
• Finite Temperature Models of Bose-Einstein Condensation
• Quantum degenerate two-species Fermi-Fermi mixture coexisting with a Bose-Einstein condensate
• Dual-Species Bose-Einstein Condensate of ${}^{87}$Rb and ${}^{133}$Cs
• Structure of binary Bose-Einstein condensates
• Non-Equilibrium Dynamics and Superfluid Ring Excitations in Binary Bose-Einstein Condensates
• Two-component Bose-Einstein Condensates with Large Number of Vortices
• Collective oscillations of two colliding Bose-Einstein condensates
• Hartree-Fock treatment of the two-component Bose-Einstein condensate
• Quantum degenerate mixtures of strontium and rubidium atoms
• Microscopic Treatment of Binary Interactions in the Non-Equilibrium Dynamics of Partially Bose-condensed Trapped Gases
• Production of a dual-species Bose-Einstein condensate of Rb and Cs atoms
• Mixture of ultracold lithium and cesium atoms in an optical dipole trap
• Quantum Kinetic Theory for a Condensed Bosonic Gas
• Condensate growth in trapped Bose gases
• Superfluidity in sympathetic cooling with atomic Bose condensates
• Modulational instability of spinor condensates
• Modelling Bose-condensed gases at finite temperatures with $N$-body simulations
• Dark soliton dynamics in Bose-Einstein condensates at finite temperature
• Bose-Einstein condensate in gases of rare atomic species
• Two-fluid dynamics for a Bose-Einstein condensate out of local equilibrium with the non-condensate
• Understanding the production of dual BEC with sympathetic cooling
• Finite-temperature simulations of the scissors mode in Bose-Einstein condensed gases
• Equilibrium solutions of immiscible two-species Bose-Einstein condensates in perturbed harmonic traps
• Solitary wave complexes in two-component mixture condensates
• Accidental suppression of Landau damping of the transverse breathing mode in elongated Bose-Einstein condensates
• Stochastic Projected Gross-Pitaevskii equation for spinor and multi-component condensates
• Equivalence of Kinetic Theories of Bose-Einstein Condensation
• Landau-Khalatnikov two-fluid hydrodynamics of a trapped Bose gas
• Self-consistent quantum kinetics of condensate and non-condensate via a coupled equation of motion formalism
• Landau damping in trapped Bose-condensed gases
• Second-order, number-conserving description of non-equilibrium dynamics in finite-temperature Bose-Einstein condensates
• Evaporative cooling of cold atoms at surfaces
• Collective Excitations of a Two-Component Bose Condensate at Finite Temperature
• Number-conserving approaches to $n$-component Bose-Einstein condensates
• Sympathetic cooling and growth of a Bose-Einstein condensate

Cited by in corpus (12)

• Phase Separation and Dynamics of two-component Bose-Einstein condensates
• Tunable dual-species Bose-Einstein condensates of ${}^{39}$K and ${}^{87}$Rb
• Quantum and thermal fluctuations in two-component Bose gases
• Time-of-flight expansion of binary Bose-Einstein condensates at finite temperature
• 3D quaternionic condensations, Hopf invariants, and skyrmion lattices with synthetic spin-orbit coupling
• Stochastic Growth Dynamics and Composite Defects in Quenched Immiscible Binary Condensates
• Hydrodynamic modes of partially condensed Bose mixtures
• Immiscible and miscible states in binary condensates in the ring geometry
• Non-equilibrium Atomic Condensates and Mixtures: Collective Modes, Condensate Growth and Thermalization
• Interfacial tension and wall energy of a Bose-Einstein condensate binary mixture: triple-parabola approximation
• A Non-Equilibrium Kinetic Theory for Trapped Binary Condensates
• Dynamics of Hot Bose-Einstein Condensates: stochastic Ehrenfest relations for number and energy damping