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The Langevin dynamics of vibrated powders

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Abstract

We present a microscopic theory of the relaxational behaviour of a granular pile submitted to vibration, elucidating the different roles of collective and independent-particle relaxation. We write down and solve Langevin equations for these processes, which have an explicit coupling. The analysis of the solution in terms of independent-particle and collective relaxations provides a consistent framework for the interpretation of experimental results.

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Author notes

  1. Anita Mehta

    Present address: IRC in Materials, University of Birmingham, B15 2TT, Edgbaston, Birmingham, UK

Authors and Affiliations

  1. Theory of Condensed Matter Group, Cavendish Laboratory, Madingley Road, CB3 0HE, Cambridge, UK

    Anita Mehta, R. J. Needs & Sushanta Dattagupta

  2. School of Physical Sciences, Jawaharlal Nehru University, 110067, New Delhi, India

    Sushanta Dattagupta

Authors
  1. Anita Mehta
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  2. R. J. Needs
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  3. Sushanta Dattagupta
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Communicated by D. Stauffer

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Mehta, A., Needs, R.J. & Dattagupta, S. The Langevin dynamics of vibrated powders. J Stat Phys 68, 1131–1141 (1992). https://doi.org/10.1007/BF01048889

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  • DOI: https://doi.org/10.1007/BF01048889

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