Off-equilibrium dynamics in a singular diffusion model

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We introduce a schematic non-linear diffusion model where density fluctuations induce a rich out of equilibrium dynamics. The properties of the model are studied by numerical simulations and analytically in a mean field approximation. At low temperatures and high densities we find a long off-equilibrium glassy region, where the system evolves out of an initially pinned state showing aging and a slow decay of the autocorrelation as an enhanced power law, along with strong spatial heterogeneities and violation of the fluctuation dissipation theorem.
4 pages, 2 figures

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Statistical Mechanics

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http://salesiana.dossiersoluciones.com/handle/123456789/164086

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9907082
 http://arxiv.org/abs/cond-mat/9907082
 Phys. Rev. Lett. 83, 5054 (1999)
 doi:10.1103/PhysRevLett.83.5054

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arXiv