Aging in a simple model of a structural glass

Details Aging in a simple model of a structural glass Aging in a simple model of a structural glass

1997-12-18

arxiv.org/abs/cond-mat/9712221v2

Physics

Condensed Matter

Statistical Mechanics

LaTeX, 8 pages, 4 figures. Contribution to the Conference "Disorder and Chaos", Rome, September 1997. A few misprints correcte

Scientific paper

We consider a simple model of a structural glass, represented by a lattice gas with kinetic constraints in contact with a particle reservoir. Quench below the glass transition is represented by the jump of the chemical potential above a threshold. After a quench, the density approaches the critical density-where the diffusion coefficient of the particles vanishes-following a power law in time. In this regime, the two-time self-correlation functions exhibit aging. The behavior of the model can be understood in terms of simple mean-field arguments.

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