Extension of the Generalized Hydrodynamics to the Dimensional Crossover Regime
| Autor: | Møller, Frederik, Li, Chen, Mazets, Igor, Stimming, Hans-Peter, Zhou, Tianwei, Zhu, Zijie, Chen, Xuzong, Schmiedmayer, Jörg |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Phys. Rev. Lett. 126, 090602 (2021) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.126.090602 |
| Popis: | In an effort to address integrability breaking in cold gas experiments, we extend the integrable hydrodynamics of the 1d Lieb-Liniger model with two additional components representing the population of atoms in the first and second transverse excited states, thus enabling a description of quasi-1d condensates. Collisions between different components are accounted for through the inclusion of a Boltzmann-type collision integral in the hydrodynamic equation. Contrary to standard generalized hydrodynamics, our extended model captures thermalization of the condensate at a rate consistent with experimental observations from a quantum Newton's cradle setup. Comment: 23 pages, 13 figures |
| Databáze: | arXiv |
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