Decay of superfluid currents in the interacting one-dimensional Bose gas
arXiv:0906.2314 · doi:10.1103/PhysRevA.80.043604
Abstract
We examine the superfluid properties of a 1D Bose gas in a ring trap based on the model of Lieb and Liniger. While the 1D Bose gas has nonclassical rotational inertia and exhibits quantization of velocities, the metastability of currents depends sensitively on the strength of interactions in the gas: the stronger the interactions, the faster the current decays. It is shown that the Landau critical velocity is zero in the thermodynamic limit due to the first supercurrent state, which has zero energy and finite probability of excitation. We calculate the energy dissipation rate of ring currents in the presence of weak defects, which should be observable on experimental time scales.
arXiv comment5 pages, 4 figures
References in corpus (32)
- Atomic Scattering in Presence of an External Confinement and a Gas of Impenetrable Bosons
- Bragg spectroscopy of a Bose-Einstein condensate
- Regimes of quantum degeneracy in trapped 1D gases
- Observation of persistent flow of a Bose-Einstein condensate in a toroidal trap
- Evidence for a critical velocity in a Bose-Einstein condensed gas
- Bosonizing one-dimensional cold atomic gases
- Bose-Einstein condensation in a circular waveguide
- Superconductivity in one dimension
- Observation of dynamical instability for a Bose-Einstein condensate in a moving 1D optical lattice
- Motion of a heavy impurity through a Bose-Einstein condensate
- Universal theory of nonlinear Luttinger liquids
- Quantum transport through a Tonks-Girardeau gas
- Strongly inhibited transport of a 1D Bose gas in a lattice
- Dynamical density-density correlations in the one-dimensional Bose gas
- A ring trap for ultracold atoms
- Phase diagram for a Bose-Einstein condensate moving in an optical lattice
- Exact exponents of edge singularities in dynamic correlation functions of 1D Bose gas
- Cold atom confinement in an all-optical dark ring trap
- Correlation functions of integrable models: a description of the ABACUS algorithm
- Decay of a superfluid currents in a moving system of strongly interacting bosons
- Superfluidity in sympathetic cooling with atomic Bose condensates
- Polarizability and dynamic structure factor of the one-dimensional Bose gas near the Tonks-Girardeau limit at finite temperatures
- Dissipative quantum dynamics of bosonic atoms in a shallow 1D optical lattice
- Supercurrent Stability in a Quasi-1D Weakly Interacting Bose Gas
- The Dynamic Structure Factor of the 1D Bose Gas near the Tonks-Girardeau Limit
- Superfluidity versus Bloch oscillations in confined atomic gases
- Ground-State Properties of a Rotating Bose-Einstein Condensate with Attractive Interaction
- Dynamic and static density-density correlations in the one-dimensional Bose gas: exact results and approximations
- Motion of an impurity particle in an ultracold quasi-one-dimensional gas of hard-core bosons
- Persistent current of atoms in a ring optical lattice
- Self-consistent calculation of the coupling constant in the Gross-Pitaevskii equation
- Approximate expression for the dynamic structure factor in the Lieb-Liniger model
Cited by in corpus (14)
- Quantum dynamics of impurities in a 1D Bose gas
- Robust Mesoscopic Superposition of Strongly Correlated Ultracold Atoms
- Oscillations and decay of superfluid currents in a one-dimensional Bose gas on a ring
- Theory of superfluidity and drag force in the one-dimensional Bose gas
- From non equilibrium quantum Brownian motion to impurity dynamics in 1D quantum liquids
- Dynamic structure factor and drag force in a one-dimensional strongly-interacting Bose gas at finite temperature
- Quantum rings for beginners II: Bosons versus fermions
- Nucleation in finite topological systems during continuous metastable quantum phase transitions
- Persistent currents in ultracold gases
- Effective potential renormalization and polaronic mass shift in a trapped dynamical impurity-luttinger liquid system
- Exact Yrast Spectra of Cold Atoms on a Ring
- Driven impurity in an ultracold 1D Bose gas with intermediate interaction strength
- Landau instability and mobility edges of the interacting one-dimensional Bose gas in weak random potentials
- Influence of quantum fluctuations on the superfluid critical velocity of a one-dimensional Bose gas