Self trapping in the two-dimensional Bose-Hubbard model
arXiv:1307.0821 · doi:10.1103/PhysRevA.88.031606
Abstract
We study the expansion of harmonically trapped bosons in a two-dimensional lattice after suddenly turning off the confining potential. We show that, in the presence of multiple occupancies per lattice site and strong interactions, the system exhibits a clear dynamical separation into slowly and rapidly expanding clouds. We discuss how this effect can be understood within a simple picture by invoking doublons and Bose enhancement. This picture is corroborated by an analysis of the momentum distribution function in the regions with slowly and rapidly expanding bosons.
arXiv comment7 pages, 8 figures, as published
References in corpus (26)
- One dimensional Bosons: From Condensed Matter Systems to Ultracold Gases
- Repulsively bound atom pairs in an optical lattice
- Fermionic transport in a homogeneous Hubbard model: Out-of-equilibrium dynamics with ultracold atoms
- Expansion dynamics of interacting bosons in homogeneous lattices in one and two dimensions
- Exact coherent states of a harmonically confined Tonks-Girardeau gas
- Localization and Glassy Dynamics Of Many-Body Quantum Systems
- Creation of a molecular condensate by dynamically melting a Mott-insulator
- Fermionization in an expanding 1D gas of hard-core bosons
- Emergence of quasi-condensates of hard-core bosons at finite momentum
- Quench dynamics of the interacting Bose gas in one dimension
- Fermionization and bosonization of expanding 1D anyonic fluids
- Dynamical Mean Field Theory of the Bose-Hubbard Model
- Quantum liquid of repulsively bound pairs of particles in a lattice
- Quantum distillation: dynamical generation of low-entropy states of strongly correlated fermions in an optical lattice
- An exact formalism for the quench dynamics of integrable models
- Fermi-Bose transformation for the time-dependent Lieb-Liniger gas
- Long-time behavior of the momentum distribution during the sudden expansion of a spin-imbalanced Fermi gas in one dimension
- Free expansion of impenetrable bosons on one-dimensional optical lattices
- Ground-state reference systems for expanding correlated fermions in one dimension
- Free expansion of a Lieb-Liniger gas: Asymptotic form of the wave functions
- Coherent matter waves emerging from Mott-insulators
- Expansion of Bose-Hubbard Mott insulators in optical lattices
- Expansion velocity of a one-dimensional, two-component Fermi gas during the sudden expansion in the ballistic regime
- Rigorous mean-field dynamics of lattice bosons: Quenches from the Mott insulator
- Dynamics and evaporation of defects in Mott-insulating clusters of boson pairs
- Strongly Interacting Atom Lasers in Three Dimensional Optical Lattices
Cited by in corpus (12)
- Real-time and real-space spin- and energy dynamics in one-dimensional spin-1/2 systems induced by local quantum quenches at finite temperatures
- Relaxation and thermalization in the one-dimensional Bose-Hubbard model: A case study for the interaction quantum quench from the atomic limit
- Sudden expansion of Mott insulators in one dimension
- Quantum distillation and confinement of vacancies in a doublon sea
- Motion of a distinguishable impurity in the Bose gas: Arrested expansion without a lattice and impurity snaking
- Expansion of one-dimensional lattice hard-core bosons at finite temperature
- Dynamics of Disordered States in the Bose-Hubbard Model with Confinement
- Sudden expansion and domain-wall melting of strongly interacting bosons in two-dimensional optical lattices and on multileg ladders
- Propagation of a single hole defect in the one-dimensional Bose-Hubbard model
- Expansion dynamics in two-dimensional Bose-Hubbard lattices: Bose-Einstein condensate and thermal cloud
- Efficiency of fermionic quantum distillation
- Expansion of strongly interacting dipolar bosons in 1D optical lattices