A test of non-equilibrium thermodynamics in glassy systems: the soft-sphere case

Details A test of non-equilibrium thermodynamics in glassy systems: the soft-sphere case A test of non-equilibrium thermodynamics in glassy systems: the soft-sphere case

2003-03-03

arxiv.org/abs/cond-mat/0303040v1

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1103/PhysRevE.68.032103

The scaling properties of the soft-sphere potential allow the derivation of an exact expression for the pressure of a frozen liquid, i.e., the pressure corresponding to configurations which are local minima in its multidimensional potential energy landscape. The existence of such a relation offers the unique possibility for testing the recently proposed extension of the liquid free energy to glassy out-of-equilibrium conditions and the associated expression for the temperature of the configurational degrees of freedom. We demonstrate that the non-equilibrium free energy provides an exact description of the soft-sphere pressure in glass states.

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