Tim Langen, Michael Gring, Maximilian Kuhnert, Bernhard Rauer, Remi Geiger, David Adu Smith, Igor E. Mazets, Jörg Schmiedmayer
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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http://arxiv.org/abs/1211.0016
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