Quasiequilibrium Mixture of Itinerant and Localized Bose Atoms in Optical Lattice

Abstract

Conditions are studied under which there can exist a quasiequilibrium mixture of itinerant and localized bosonic atoms in an optical lattice, even at zero temperature and at integer filling factor, when such a coexistence is impossible for an equilibrium lattice. The consideration is based on a model having the structure of a two-band, or two-component, boson Hubbard Hamiltonian. The minimal value for the ratio of on-site repulsion to tunneling parameter, necessary for the occurrence of such a mixture, is found.

Latex file, 15 pages, one figure

References in corpus (18)

• Many-Body Physics with Ultracold Gases
• Monte Carlo study of two-dimensional Bose-Hubbard model
• Cold Bosons in Optical Lattices
• Quantum Monte Carlo simulations of confined bosonic atoms in optical lattices
• Boson Mott insulators at finite temperatures
• Representative statistical ensembles for Bose systems with broken gauge symmetry
• Fluctuations of composite observables and stability of statistical systems
• Gapless Hartree-Fock-Bogoliubov Approximation for Bose Gases
• Self-Consistent Theory of Bose-Condensed Systems
• Bose-Einstein-condensed gases with arbitrary strong interactions
• Nonequivalent operator representations for Bose-condensed systems
• Turbulent superfluid as continuous vortex mixture
• Condensate and superfluid fractions for varying interactions and temperature
• Cold atoms in double-well optical lattices
• Tunneling control and localization for Bose-Einstein condensates in a frequency modulated optical lattice
• Stability of the homogeneous Bose-Einstein condensate at large gas parameter
• Dynamics of Bose-Einstein Condensates in One-Dimensional Optical Lattices in the Presence of Transverse Resonances
• Regulating atomic imbalance in double-well lattices

Cited by in corpus (10)

• Difference in Bose-Einstein condensation of conserved and unconserved particles
• Macroscopic properties of triplon Bose-Einstein condensates
• Bose - Einstein condensation of triplons with a weakly broken U(1) symmetry
• Critical temperature of noninteracting bosonic gases in cubic optical lattices at arbitrary integer fillings
• Tunneling of polarized fermions in 3D double wells
• Phase Transitions in Three-Dimensional Bosonic Systems in Optical Lattices
• Optical lattice with heterogeneous atomic density
• Photonic spectral density of coupled microwave cavities
• Hugenholtz -- Pines relations and the critical temperature of a Rabi coupled binary Bose system
• Dynamical entanglement in coupled optical cavities