Elliptic flow in a strongly interacting normal Bose gas
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Authors
Fletcher, RJ
Man, J
Lopes, R
Schmitt, J
Sohmen, M
Navon, N
Publication Date
2018-07-05Journal Title
Physical Review A
ISSN
2469-9926
Publisher
American Physical Society (APS)
Volume
98
Issue
1
Type
Article
This Version
NA
Metadata
Show full item recordCitation
Fletcher, R., Man, J., Lopes, R., Christodoulou, P., Schmitt, J., Sohmen, M., Navon, N., et al. (2018). Elliptic flow in a strongly interacting normal Bose gas. Physical Review A, 98 (1) https://doi.org/10.1103/PhysRevA.98.011601
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 in our system
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 thermalising
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.
Sponsorship
European Office of Aerospace Research and Development (EOARD) (W911NF-15-1-0444)
Engineering and Physical Sciences Research Council (EP/N011759/1)
European Research Council (682285)
European Commission Horizon 2020 (H2020) Marie Sk?odowska-Curie actions (704832)
Engineering and Physical Sciences Research Council (EP/P009565/1)
Identifiers
External DOI: https://doi.org/10.1103/PhysRevA.98.011601
This record's URL: https://www.repository.cam.ac.uk/handle/1810/277800
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