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...
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| Veröffentlicht in: | Physical review letters 2019-07, Vol.123 (2), p.020405-020405, Article 020405 |
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| container_title | Physical review letters |
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| creator | Dogra, Lena H Glidden, Jake A P Hilker, Timon A Eigen, Christoph Cornell, Eric A Smith, Robert P Hadzibabic, Zoran |
| 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 η. We predict that the evolution of η under continuous three-body loss can, depending on small changes in the initial conditions, exhibit two qualitatively different behaviors-if it is initially above a certain critical value, η increases further, whereas clouds with lower initial η evolve towards a thermal gas. These dynamical effects should be observable under realistic experimental conditions. |
| doi_str_mv | 10.1103/PhysRevLett.123.020405 |
| format | Article |
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| subjects | Gases Initial conditions |
| title | Can Three-Body Recombination Purify a Quantum Gas? |
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