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.
This publication has been updated
- Correction: Asymptotic temperature of a lossy condensate on 2020-04-23
Authors / Affiliation: mappings to Contributors and OrganizationsSee all Organizations.
- 1 Isabelle Bouchoule,
- 1 Max Schemmer
- Centre National de la Recherche Scientifique / French National Centre for Scientific Research [CNRS]
- Conseil Régional, Île-de-France
- Studienstiftung des Deutschen Volkes (through Organization: Studienstiftung des deutschen Volkes / German National Academic Foundation)