Aging in a simple model of a structural glass
Abstract
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 densitywhere the diffusion coefficient of the particles vanishesfollowing a power law in time. In this regime, the twotime selfcorrelation functions exhibit aging. The behavior of the model can be understood in terms of simple meanfield arguments.
 Publication:

arXiv eprints
 Pub Date:
 December 1997
 DOI:
 10.48550/arXiv.condmat/9712221
 arXiv:
 arXiv:condmat/9712221
 Bibcode:
 1997cond.mat.12221P
 Keywords:

 Condensed Matter  Statistical Mechanics;
 Condensed Matter  Disordered Systems and Neural Networks
 EPrint:
 LaTeX, 8 pages, 4 figures. Contribution to the Conference "Disorder and Chaos", Rome, September 1997. A few misprints corrected, and references updated