Breakdown of integrability in a quasi-1D ultracold bosonic gas.
We demonstrate that virtual excitations of higher radial modes in an atomic Bose gas in a tightly confining waveguide result in effective three-body collisions that violate integrability in this quasi-one-dimensional quantum system and give rise to thermalization. The estimated thermalization rates are consistent with recent experimental results in quasi-1D dynamics of ultracold atoms.
Atominstitut der Osterreichischen Universitäten, TU Wien, A-1020 Vienna, Austria.
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Mazets
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Schumm
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Schmiedmayer