Elliptic flow in a strongly interacting normal Bose gas
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PhysRevA.98.011601.pdf
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Author(s)
Man, Jay
Lopes, Raphael
Christodoulou, Panagiotis
Schmitt, Julian
Sohmen, Maximilian
Navon, Nir
Smith, Robert P.
Hadzibabic, Zoran
Fletcher, Richard J
Date Issued
July 2018
Journal
Physical Review A
Publisher
American Physical Society
Citation
Fletcher, Richard J. et al. "Elliptic flow in a strongly interacting normal Bose gas." Physical Review A 98, 1 (July 2018): 011601(R) © 2018 American Physical Society
Version
Final published version
Abstract
We study the anisotropic, elliptic expansion of a thermal atomic Bose gas released from an anisotropic trapping potential, for a wide range of interaction strengths across a Feshbach resonance. We show that this hydrodynamic phenomenon is for all interaction strengths fully described by a microscopic kinetic model with no free parameters. The success of this description crucially relies on taking into account the reduced thermalizing power of elastic collisions in a strongly interacting gas, for which we derive an analytical theory. We also perform time-resolved measurements that directly reveal the dynamics of the energy transfer between the different expansion axes.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
MIT-Harvard Center for Ultracold Atoms
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevA.98.011601
