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arxiv: 1211.0016 · v2 · submitted 2012-10-31 · ❄️ cond-mat.quant-gas · cond-mat.stat-mech

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Prethermalization in one-dimensional Bose gases: description by a stochastic Ornstein-Uhlenbeck process

Tim Langen , Michael Gring , Maximilian Kuhnert , Bernhard Rauer , Remi Geiger , David Adu Smith , Igor E. Mazets , J\"org Schmiedmayer
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classification ❄️ cond-mat.quant-gas cond-mat.stat-mech
keywords bosedescriptiondynamicsinterferenceone-dimensionalornstein-uhlenbeckprethermalizationprocess
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We experimentally study the relaxation dynamics of a coherently split one-dimensional Bose gas using matterwave interference. Measuring the full probability distributions of interference contrast reveals the prethermalization of the system to a non-thermal steady state. To describe the evolution of noise and correlations we develop a semiclassical effective description that allows us to model the dynamics as a stochastic Ornstein-Uhlenbeck process.

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