Sound propagation in a uniform superfluid two-dimensional Bose gas

Abstract

In superfluid systems several sound modes can be excited, as for example first and second sound in liquid helium. Here, we excite propagating and standing waves in a uniform two-dimensional Bose gas and we characterize the propagation of sound in both the superfluid and normal regime. In the superfluid phase, the measured speed of sound is well described by a two-fluid hydrodynamic model, and the weak damping rate is well explained by the scattering with thermal excitations. In the normal phase the sound becomes strongly damped due to a departure from hydrodynamic behavior.

arXiv commentSupplementary Material available as ancillary files

References in corpus (22)

• Atom chip based generation of entanglement for quantum metrology
• Interatomic collisions in a tightly confined Bose gas
• Critical Point of a Weakly Interacting Two-Dimensional Bose Gas
• Emergence of a Turbulent Cascade in a Quantum Gas
• Two-Dimensional Weakly Interacting Bose Gas in the Fluctuation Region
• Landau damping in dilute Bose gases
• Two-Dimensional Homogeneous Fermi Gases
• Collective oscillations of a classical gas confined in harmonic traps
• Hydrodynamic modes in a trapped Bose gas above the Bose-Einstein transition
• The discovery of superfluidity
• Transmission of near-resonant light through a dense slab of cold atoms
• Loading and compression of a single two-dimensional Bose gas in an optical accordion
• Relaxation dynamics in the merging of $N$ independent condensates
• First and second sound in a uniform Bose gas
• Sound propagation in a Bose-Einstein condensate at finite temperatures
• First and second sound in a strongly interacting Fermi gas
• Partial-Transfer Absorption Imaging: A versatile technique for optimal imaging of ultracold gases
• Collisionless sound in a uniform two-dimensional Bose gas
• Damping in 2D and 3D dilute Bose gases
• Discontinuities in the First and Second Sound Velocities at the Berezinskii-Kosterlitz-Thouless Transition
• Resonant wavepackets and shock waves in an atomtronic SQUID
• Second sound in 2D Bose gas: from the weakly interacting to the strongly interacting regime

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