Dynamical response functions in models of vibrated granular media

Details Dynamical response functions in models of vibrated granular media Dynamical response functions in models of vibrated granular media

1998-09-25

arxiv.org/abs/cond-mat/9809346v1

Phys. Rev. Lett. 82, 3734 (1999)

Physics

Condensed Matter

12 pages, 2 postscript figures

Scientific paper

10.1103/PhysRevLett.82.3734

In recently introduced schematic lattice gas models for vibrated dry granular media, we study the dynamical response of the system to small perturbations of shaking amplitudes and its relations with the characteristic fluctuations. Strong off equilibrium features appear and a generalized version of the fluctuation dissipation theorem is introduced. The relations with thermal glassy systems and the role of Edwards' compactivity are discussed.

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