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Two-stream instability in quasi-one-dimensional Bose-Einstein condensates

Tercas, H. and Mendonca, J.T. and Robb, G.R.M. and , Fundacao para a Ciencia e Tecnologia (FCT-Portugal) (Funder) and , Leverhulme Trust via research (Funder) (2009) Two-stream instability in quasi-one-dimensional Bose-Einstein condensates. Physical Review A, 79 (6). ISSN 1050-2947

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Abstract

We apply a kinetic model to predict the existence of an instability mechanism in elongated Bose-Einstein condensates. Our kinetic description, based on the Wigner formalism, is employed to highlight the existence of unstable Bogoliubov waves that may be excited in the counterpropagation configuration. We identify a dimensionless parameter, the Mach number at T=0, that tunes different regimes of stability. We also estimate the magnitude of the main parameters at which two-stream instability is expected to be observed under typical experimental conditions.

Item type: Article
ID code: 19054
Keywords: bose-einstein condensation, quantum entanglement, wave functions, Physics, Atomic and Molecular Physics, and Optics
Subjects: Science > Physics
Department: Faculty of Science > Physics
Depositing user: Strathprints Administrator
Date Deposited: 07 Jun 2010 10:13
Last modified: 15 Apr 2015 11:09
URI: http://strathprints.strath.ac.uk/id/eprint/19054

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