Elliptic flow in a strongly interacting normal Bose gas
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 microscopi...
| Main Authors: | , , , , , , , , |
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| Format: | Journal article |
| Published: |
American Physical Society
2018
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| _version_ | 1797084621780811776 |
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| author | Fletcher, R Man, J Lopes, R Christodoulou, P Schmitt, J Sohmen, M Navon, N Smith, R Hadzibabic, Z |
| author_facet | Fletcher, R Man, J Lopes, R Christodoulou, P Schmitt, J Sohmen, M Navon, N Smith, R Hadzibabic, Z |
| author_sort | Fletcher, R |
| collection | OXFORD |
| description | 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. |
| first_indexed | 2024-03-07T01:57:39Z |
| format | Journal article |
| id | oxford-uuid:9c458fe6-bb4a-4bae-9e83-5be355c42eaf |
| institution | University of Oxford |
| last_indexed | 2024-03-07T01:57:39Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:9c458fe6-bb4a-4bae-9e83-5be355c42eaf2022-03-27T00:34:50ZElliptic flow in a strongly interacting normal Bose gasJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9c458fe6-bb4a-4bae-9e83-5be355c42eafSymplectic Elements at OxfordAmerican Physical Society2018Fletcher, RMan, JLopes, RChristodoulou, PSchmitt, JSohmen, MNavon, NSmith, RHadzibabic, ZWe 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. |
| spellingShingle | Fletcher, R Man, J Lopes, R Christodoulou, P Schmitt, J Sohmen, M Navon, N Smith, R Hadzibabic, Z Elliptic flow in a strongly interacting normal Bose gas |
| title | Elliptic flow in a strongly interacting normal Bose gas |
| title_full | Elliptic flow in a strongly interacting normal Bose gas |
| title_fullStr | Elliptic flow in a strongly interacting normal Bose gas |
| title_full_unstemmed | Elliptic flow in a strongly interacting normal Bose gas |
| title_short | Elliptic flow in a strongly interacting normal Bose gas |
| title_sort | elliptic flow in a strongly interacting normal bose gas |
| work_keys_str_mv | AT fletcherr ellipticflowinastronglyinteractingnormalbosegas AT manj ellipticflowinastronglyinteractingnormalbosegas AT lopesr ellipticflowinastronglyinteractingnormalbosegas AT christodouloup ellipticflowinastronglyinteractingnormalbosegas AT schmittj ellipticflowinastronglyinteractingnormalbosegas AT sohmenm ellipticflowinastronglyinteractingnormalbosegas AT navonn ellipticflowinastronglyinteractingnormalbosegas AT smithr ellipticflowinastronglyinteractingnormalbosegas AT hadzibabicz ellipticflowinastronglyinteractingnormalbosegas |