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 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.
- Publication:
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arXiv e-prints
- Pub Date:
- December 1997
- DOI:
- 10.48550/arXiv.cond-mat/9712221
- arXiv:
- arXiv:cond-mat/9712221
- Bibcode:
- 1997cond.mat.12221P
- Keywords:
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- Condensed Matter - Statistical Mechanics;
- Condensed Matter - Disordered Systems and Neural Networks
- E-Print:
- LaTeX, 8 pages, 4 figures. Contribution to the Conference "Disorder and Chaos", Rome, September 1997. A few misprints corrected, and references updated