Mean-field description of ultracold Bosons on disordered two-dimensional optical lattices

Abstract

In the present paper we describe the properties induced by disorder on an ultracold gas of Bosonic atoms loaded into a two-dimensional optical lattice with global confinement ensured by a parabolic potential. Our analysis is centered on the spatial distribution of the various phases, focusing particularly on the superfluid properties of the system as a function of external parameters and disorder amplitude. In particular, it is shown how disorder can suppress superfluidity, while partially preserving the system coherence.

arXiv commentAccepted for publication on JPB-FTC

References in corpus (14)

• The cold atom Hubbard toolbox
• Exploring phase coherence in a 2D lattice of Bose-Einstein condensates
• Exciting Collective Oscillations in a Trapped 1D Gas
• A Bose-Einstein condensate in a random potential
• Atomic Bose and Anderson glasses in optical lattices
• Localization of bosonic atoms by fermionic impurities in a 3d optical lattice
• Mott Domains of Bosons Confined on Optical Lattices
• Quantum Monte Carlo simulations of confined bosonic atoms in optical lattices
• Phase Diagram of Bosonic Atoms in Two-Color Superlattices
• Quantum computations with atoms in optical lattices: marker qubits and molecular interactions
• Superfluidity and Interference Pattern of Ultracold Bosons in Optical Lattices
• Bose-Einstein-condensed systems in random potentials
• Vortex configurations of bosons in an optical lattice
• Mean-field phase diagram for Bose-Hubbard Hamiltonians with random hopping

Cited by in corpus (9)

• Phase diagram of the disordered Bose-Hubbard model
• The one-dimensional Bose-Fermi-Hubbard model in the heavy-fermion limit
• Finite temperature study of bosons in a two dimensional optical lattice
• Stochastic Mean-Field Theory for the Disordered Bose-Hubbard Model
• Application of a multi-site mean-field theory to the disordered Bose-Hubbard model
• Gutzwiller approach to the Bose-Hubbard model with random local impurities
• Commensurability and hysteretic evolution of vortex configurations in rotating optical lattices
• Glassy features of a Bose Glass
• The effect of disorder on polaritons in a coupled array of cavities