Monday, April 23, 2012

1109.4310 (Dominic C. Wadkin-Snaith et al.)

Quantum gray solitons in confining potentials    [PDF]

Dominic C. Wadkin-Snaith, Dimitri M. Gangardt
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.
View original: http://arxiv.org/abs/1109.4310

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