title: Test of nonequilibrium thermodynamics in glassy systems: the soft-sphere case.
abstract: 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 nonequilibrium free energy provides an exact description of the soft-sphere pressure in glass states.
authors.affiliation: Dipartimento di Fisica, INFM UdR, Università di Roma La Sapienza, Piazzate Aldo Moro 5, I-00185 Rome, Italy.
authors.forename: E
authors.initials: E
authors.lastname: La Nave
authors.forename: F
authors.initials: F
authors.lastname: Sciortino
authors.forename: P
authors.initials: P
authors.lastname: Tartaglia
authors.forename: M S
authors.initials: MS
authors.lastname: Shell
authors.forename: P G
authors.initials: PG
authors.lastname: Debenedetti