Can three-body recombination purify a quantum gas?
Three-body recombination in quantum gases is traditionally associated with heating, but it was recently found that it can also cool the gas. We show that in a partially condensed three-dimensional homogeneous Bose gas three-body loss could even purify the sample, that is, reduce the entropy per part...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
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American Physical Society
2019
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| _version_ | 1826303193549635584 |
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| author | Dogra, L Glidden, J Hilker, T Eigen, C Cornell, E Smith, R Hadzibabic, Z |
| author_facet | Dogra, L Glidden, J Hilker, T Eigen, C Cornell, E Smith, R Hadzibabic, Z |
| author_sort | Dogra, L |
| collection | OXFORD |
| description | Three-body recombination in quantum gases is traditionally associated with heating, but it was recently found that it can also cool the gas. We show that in a partially condensed three-dimensional homogeneous Bose gas three-body loss could even purify the sample, that is, reduce the entropy per particle and increase the condensed fraction $\eta$. We predict that the evolution of $\eta$ under continuous three-body loss can, depending on small changes in the initial conditions, exhibit two qualitatively different behaviours - if it is initially above a certain critical value, $\eta$ increases further, whereas clouds with lower initial $\eta$ evolve towards a thermal gas. These dynamical effects should be observable under realistic experimental conditions. |
| first_indexed | 2024-03-07T05:58:56Z |
| format | Journal article |
| id | oxford-uuid:eb8089a9-a23e-48c9-ac99-ae1a2e387c1c |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:58:56Z |
| publishDate | 2019 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | oxford-uuid:eb8089a9-a23e-48c9-ac99-ae1a2e387c1c2022-03-27T11:10:12ZCan three-body recombination purify a quantum gas?Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:eb8089a9-a23e-48c9-ac99-ae1a2e387c1cSymplectic Elements at OxfordAmerican Physical Society2019Dogra, LGlidden, JHilker, TEigen, CCornell, ESmith, RHadzibabic, ZThree-body recombination in quantum gases is traditionally associated with heating, but it was recently found that it can also cool the gas. We show that in a partially condensed three-dimensional homogeneous Bose gas three-body loss could even purify the sample, that is, reduce the entropy per particle and increase the condensed fraction $\eta$. We predict that the evolution of $\eta$ under continuous three-body loss can, depending on small changes in the initial conditions, exhibit two qualitatively different behaviours - if it is initially above a certain critical value, $\eta$ increases further, whereas clouds with lower initial $\eta$ evolve towards a thermal gas. These dynamical effects should be observable under realistic experimental conditions. |
| spellingShingle | Dogra, L Glidden, J Hilker, T Eigen, C Cornell, E Smith, R Hadzibabic, Z Can three-body recombination purify a quantum gas? |
| title | Can three-body recombination purify a quantum gas? |
| title_full | Can three-body recombination purify a quantum gas? |
| title_fullStr | Can three-body recombination purify a quantum gas? |
| title_full_unstemmed | Can three-body recombination purify a quantum gas? |
| title_short | Can three-body recombination purify a quantum gas? |
| title_sort | can three body recombination purify a quantum gas |
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