Non-equilibrium dynamics of fluctuations in an ultra-cold atomic mixture
We investigate an ultra-cold mixture of Bose gases interacting via spin-changing collisions by studying the dynamics of spin fluctuations. The experimental implementation employs $^{23}$Na and $^{7}$Li atoms, which are prepared out of equilibrium across a wide range of initial conditions. We identif...
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| Main Authors: | , , , , , |
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| Format: | Article (Journal) Chapter/Article |
| Language: | English |
| Published: |
13 Apr 2022
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| In: |
Arxiv
Year: 2022, Pages: 1-9 |
| DOI: | 10.48550/arXiv.2204.06456 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.48550/arXiv.2204.06456 Verlag, lizenzpflichtig, Volltext: http://arxiv.org/abs/2204.06456 
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| Author Notes: | Apoorva Hegde, Robert Ott, Andy Xia, Valentin Kasper, Jürgen Berges, and Fred Jendrzejewski |
| Summary: | We investigate an ultra-cold mixture of Bose gases interacting via spin-changing collisions by studying the dynamics of spin fluctuations. The experimental implementation employs $^{23}$Na and $^{7}$Li atoms, which are prepared out of equilibrium across a wide range of initial conditions. We identify three regimes in the dynamics of the system for different initial states: a long-lived metastable regime, an instability range with strong growth of fluctuations, and a fast relaxing regime approaching thermal equilibrium. Theoretical modelling of the data allows us to reconstruct effective potentials which characterize the different dynamical regimes of the system. |
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| Item Description: | Gesehen am 20.09.2022 |
| Physical Description: | Online Resource |
| DOI: | 10.48550/arXiv.2204.06456 |