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Phys. Rev. A 57, 518 - 521 (1998)

Sound propagation in a cylindrical Bose-condensed gas

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E. Zaremba
Department of Physics, Queen’s University, Kingston, Ontario, Canada K7L 3N6

Received 2 September 1997

We study the normal modes of a cylindrical Bose condensate at T=0 using the linearized time-dependent Gross-Pitaevskii equation in the Thomas-Fermi limit. These modes are relevant to the recent observation of pulse propagation in long, cigar-shaped traps. We find that pulses generated in a cylindrical condensate propagate with little spread at a speed c=sqrt[gn̄/m], where n̄ is the average density of the condensate over its cross-sectional area.


©1998 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.57.518
DOI: 10.1103/PhysRevA.57.518
PACS: 03.75.Fi, 67.40.Hf, 67.57.Jj

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