Phys. Rev. Lett. 88, 204301 (2002) [4 pages]Phase Separation and Coarsening in Electrostatically Driven Granular MediaReceived 20 July 2001; revised 16 November 2001; published 30 April 2002 A continuum model for the phase separation and coarsening in electrostatically driven granular media is formulated in terms of a Ginzburg-Landau equation subject to conservation of the total number of grains. In the regime of well-developed clusters, the continuum model is used to derive “sharp-interface” equations that govern the dynamics of the interphase boundary. The model captures the essential physics of this system. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.88.204301
DOI:
10.1103/PhysRevLett.88.204301
PACS:
45.70.Mg, 45.70.Qj
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