Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2000-01-21
Phys. Rev. Lett. 84, 6054 (2000)
Physics
Condensed Matter
Disordered Systems and Neural Networks
4 pages,4 figures
Scientific paper
10.1103/PhysRevLett.84.6054
The off-equilibrium dynamics of a monatomic Lennard-Jones glass is investigated after sudden isothermal density jumps (crunch) from well equilibrated liquid configurations towards the glassy state. The generalized fluctuation-dissipation relation has been studied and the temperature dependence of the violation factor m is found in agreement with the one step replica symmetry breaking scenario, i.e. at low temperature m(T) is found proportional to T up to an off-equilibrium effective temperature T_eff, where m(T_eff)=1. We report T_eff as a function of the density and compare it with the glass transition temperatures T_g as determined by equilibrium calculations.
Angelani Luca
Di Leonardo Roberto
Parisi Giorgio
Ruocco Giancarlo
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