Thermodynamics of glasses: a first principle computation

Details Thermodynamics of glasses: a first principle computation Thermodynamics of glasses: a first principle computation

1998-07-31

arxiv.org/abs/cond-mat/9807420v1

Physics

Condensed Matter

Latex, 13 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.82.747

We propose a first principle computation of the thermodynamics of simple fragile glasses starting from the two body interatomic potential. A replica formulation translates this problem into that of a gas of interacting molecules, each molecule being built of $m$ atoms, and having a gyration radius (related to the cage size) which vanishes at zero temperature. We use a small cage expansion, valid at low temperatures, which allows to compute the cage size, the specific heat (which follows the Dulong and Petit law), and the configurational entropy.

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