Asymptotic temperature of a lossy condensate
We monitor the time evolution of the temperature of phononic collective modes in a one-dimensional quasicondensate submitted to losses. At long times the ratio between the temperature and the energy scale $mc^2$, where $m$ is the atomic mass and $c$ the sound velocity takes, within a precision of...
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| Format: | Article |
| Language: | English |
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SciPost
2020-04-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.8.4.060 |
| Summary: | We monitor the time evolution of the temperature of phononic collective modes
in a one-dimensional quasicondensate submitted to losses. At long times the
ratio between the temperature and the energy scale $mc^2$, where $m$ is the
atomic mass and $c$ the sound velocity takes, within a precision of 20\%, an
asymptotic value. This asymptotic value is observed while $mc^2$ decreases in
time by a factor as large as 2.5. Moreover this ratio is shown to be
independent on the loss rate and on the strength of interactions. These results
confirm theoretical predictions and the measured stationary ratio is in
quantitative agreement with the theoretical calculations. |
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| ISSN: | 2542-4653 |