Eur. Phys. J. B 30, 351-355 (2002)
https://doi.org/10.1140/epjb/e2002-00389-0

Aging and energy landscapes: application to liquids and glasses

¹ Dipartimento di Fisica and INFM Udr and Center for Statistical Mechanics and Complexity, Universitá di Roma “La Sapienza”, Piazzale Aldo Moro 2, 00185, Roma, Italy
² Center for Polymer Studies and Department of Physics, Boston University, Boston, Massachusetts 02215, USA

Corresponding author: ^a mossa@lptl.jussieu.fr

Received: 7 August 2002
Revised: 8 October 2002
Published online: 19 December 2002

Abstract

The equation of state for a liquid in equilibrium, written in the potential energy landscape formalism, is generalized to describe out-of-equilibrium conditions. The hypothesis that during aging the system explores basins associated to equilibrium configurations is the key ingredient in the derivation. Theoretical predictions are successfully compared with data from molecular dynamics simulations of different aging processes, such as temperature and pressure jumps.