Year: 1999
Type: article
Abstract: We introduce a schematic nonlinear 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.
Source: Physical Review Letters
Institution: Imperial College London
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2024647695