1997/12/18 by Luca Peliti, Peliti, Luca, Mauro Sellitto +1
Economics, Econometrics and Finance · Materials Science · Physics and Astronomy · #Complex Systems and Time Series Analysis #Material Dynamics and Properties #Theoretical and Computational Physics #cond-mat.dis-nn #cond-mat.stat-mech
paper · pdf · doi:10.48550/arxiv.cond-mat/9712221
LaTeX, 8 pages, 4 figures. Contribution to the Conference "Disorder and Chaos", Rome, September 1997. A few misprints corrected, and references updated
arxiv created 1998/02/06 · arxiv updated 2009/11/30
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.