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      Collective excitations and screened interactions in two-dimensional charged Bose systems

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      Author(s)
      Tanatar, Bilal
      Das, A. K.
      Date
      1995
      Source Title
      Journal of Physics: Condensed Matter
      Print ISSN
      0953-8984
      Publisher
      Institute of Physics Publishing Ltd.
      Volume
      7
      Issue
      30
      Pages
      6065 - 6073
      Language
      English
      Type
      Article
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      Abstract
      We study the collective excitation spectrum of a two-dimensional charged Bose gas interacting via long- and short-range potentials. The resulting plasmon dispersions depend on the type of interaction. Extending our results to a double-layer system, we calculate the dispersion relations of ensuing optical and acoustic plasmons, and screened interactions. The effective interactions exhibit attractive parts which may have interesting consequences. Comparison of our results with a two-dimensional electron gas is made.
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      http://hdl.handle.net/11693/25863
      Published Version (Please cite this version)
      http://dx.doi.org/10.1088/0953-8984/7/30/010
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      • Department of Physics 2550
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