Dynamical thermalization of Bose-Einstein condensate in Bunimovich stadium
arXiv:1505.05130 · doi:10.1209/0295-5075/111/50009
Abstract
We study numerically the wavefunction evolution of a Bose-Einstein condensate in a Bunimovich stadium billiard being governed by the Gross-Pitaevskii equation. We show that for a moderate nonlinearity, above a certain threshold, there is emergence of dynamical thermalization which leads to the Bose-Einstein probability distribution over the linear eigenmodes of the stadium. This distribution is drastically different from the energy equipartition over oscillator degrees of freedom which would lead to the ultra-violet catastrophe. We argue that this interesting phenomenon can be studied in cold atom experiments.
6 pages, 6 figures. Accepted in Europhysics Letters. Video is available at http://www.quantware.ups-tlse.fr/QWLIB/becstadium/
References in corpus (7)
- Experimental Observation of a Generalized Gibbs Ensemble
- Destruction of Anderson localization by a weak nonlinearity
- Nonlinear lattice waves in heterogeneous media
- Quantum Chaos of Bogoliubov Waves for a Bose-Einstein Condensate in Stadium Billiards
- Bogoliubov-wave turbulence in Bose-Einstein condensates
- Mesoscopic "Rydberg" atom in a microwave field
- Kolmogorov turbulence, Anderson localization and KAM integrability
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