Rotational bosonic current in a quasi-condensate confined in an optical toroidal trap

Details Rotational bosonic current in a quasi-condensate confined in an optical toroidal trap Rotational bosonic current in a quasi-condensate confined in an optical toroidal trap

2003-11-28

arxiv.org/abs/cond-mat/0311653v1

Journal of Physics B: Atomic, Molecular and Optical Physics, 37, 4397-4404 (2004)

Physics

Condensed Matter

Statistical Mechanics

10 pages, 3 figures

Scientific paper

10.1088/0953-4075/37/22/001

We investigate the possibility of inducing a bosonic current which is rotational in a pseudo 1D quasi-condensate confined in an optical toroidal trap. The stability of such a current is also analyzed using hydrodynamics approach. We find that such a current is uniform when the circular symmetry is preserved and energetically stable when the modes of elementary excitations are restricted to one dimension. This scheme allows to distinguish between a quasi and a true condensate by measuring the rotational spectra of the sample.

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