Superfluidity of an interacting trapped quasi-2D Bose gas

Abstract

We investigate the harmonically trapped interacting Bose gas in a quasi-2D geometry using the classical field method. The system exhibits quasi-long-range order and non-classical rotational inertia at temperatures below the Berezinskii-Kosterlitz-Thouless cross-over to the superfluid state. In particular, we compute the scissors-mode oscillation frequencies and find that the irrotational mode changes its frequency as the temperature is sweeped across the cross-over thus providing microscopic evidence for the emergence of superfluidity.

arXiv comment9 pages, 7 figures

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Cited by in corpus (32)

• Spontaneous vortices in the formation of Bose-Einstein condensates
• Dynamics and statistical mechanics of ultra-cold Bose gases using c-field techniques
• Observation of scale invariance and universality in two-dimensional Bose gases
• Stochastic classical field model for polariton condensates
• Finite temperature vortex dynamics in Bose Einstein condensates
• Solitons as the early stage of quasicondensate formation during evaporative cooling
• Quasicondensation and coherence in the quasi-two-dimensional trapped Bose gas
• Vortex pairing in two-dimensional Bose gases
• The effect of population imbalance on the Berezinskii-Kosterlitz-Thouless phase transition in a superfluid Fermi gas
• Bose-Einstein condensation and Berezinskii-Kosterlitz-Thouless transition in 2D Nonlinear Schrödinger model
• Numerical method for evolving the Projected Gross-Pitaevskii equation
• Finite temperature analysis of a quasi2D dipolar gas
• Ab initio methods for finite temperature two-dimensional Bose gases
• Dynamical thermalization and vortex formation in stirred 2D Bose-Einstein condensates
• Critical properties of a trapped interacting Bose gas
• Many-body physics in the classical-field description of a degenerate Bose gas
• Quench dynamics of an ultracold two-dimensional Bose gas
• Vortex gyroscope imaging of planar superfluids
• Ultracold gases far from equilibrium
• Probing superfluidity in a quasi two-dimensional Bose gas through its local dynamics
• PGPE theory of finite temperature collective modes for a trapped Bose gas
• Classical field theory limit of many-body quantum Gibbs states in 2D and 3D
• Analysis of the Holzmann-Chevallier-Krauth theory for the trapped quasi-two-dimensional Bose gas
• Signatures of a universal jump in the superfluid density in two-dimensional Bose gas with finite number of particles
• Condensation and quasicondensation in an elongated three-dimensional Bose gas
• Transition region properties of a trapped quasi-two-dimensional degenerate Bose gas
• Finite-temperature phase transitions in quasi-two-dimensional spin-1 Bose gases
• Phase transition dimensionality crossover from two to three dimensions in a trapped ultracold atomic Bose gas
• Quantitative test of mean-field description of a trapped two-dimensional Bose gas
• Periodic quenches across the Berezinskii-Kosterlitz-Thouless phase transition
• Vortex Formation in Two-Dimensional Bose Gas
• Limites de champ moyen bosoniques {à} temp{é}rature positive