Sound propagation in a cylindrical Bose-condensed gas

1997/08/29 by E. Zaremba · 7 citations
Physics and Astronomy · #Acoustics #Atomic and Subatomic Physics Research #Bose gas #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Materials science #Physics #Quantum, superfluid, helium dynamics #Sound (geography) #Sound propagation #cond-mat

paper · pdf · doi:10.1103/physreva.57.518

4 pages, 2 Postscript figures

arxiv created 1997/08/29 · openalex publication_date 1998/01/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

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=√g\mathrmn\ifmmode \else \=\fi/m, where \mathrmn\ifmmode \else \=\fi is the average density of the condensate over its cross-sectional area.

Citations

• Structure of a quantized vortex in boson systems

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