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arXiv · 1109.4310

Quantum gray solitons in confining potentials

Dominic C. Wadkin-Snaith·Dimitri M. Gangardt
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Abstract

We define and study hole-like excitations (the Lieb II mode) in a weakly interacting Bose liquid subject to external confinement. These excitations are obtained by semiclassical quantization of gray solitons propagating on top of a Thomas-Fermi background. Radiation of phonons by an accelerated gray soliton leads to a finite life-time for the trapped Lieb II mode. It is shown that, for a large number of trapped atoms, most of the Lieb II levels can be experimentally resolved.

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Dominic C. Wadkin-Snaith, Dimitri M. Gangardt. 2012-04-20. Quantum gray solitons in confining potentials. https://doi.org/10.1103/physrevlett.108.085301

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