Zero-th law in structural glasses: an example

Details Zero-th law in structural glasses: an example Zero-th law in structural glasses: an example

2001-10-16

arxiv.org/abs/cond-mat/0110321v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

10 pages. Contribution to the Proceedings of the ESF SPHINX meeting `Glassy behaviour of kinetically constrained models' (Barc

Scientific paper

10.1088/0953-8984/14/7/315

We investigate the validity of a zeroth thermodynamic law for non-equilibrium systems. In order to describe the thermodynamics of the glassy systems, it has been introduced an extra parameter, the effective temperature which generalizes the fluctuation-dissipation theorem (FDT) to off-equilibrium systems and supposedly describes thermal fluctuations around the aging state. In particular we analyze two coupled systems of harmonic oscillators with Monte Carlo dynamics. We study in detail two types of dynamics: sequential dynamics, where the coupling between the subsystems comes only from the Hamiltonian; and parallel dynamics where there is another source of coupling: the dynamics. We show how in the first case the effective temperatures of the two interacting subsystems are different asymptotically due to the smallness of the thermal conductivity in the aging regime. This explains why, in structural glasses, different interacting degrees of freedom can stay at different effective temperatures, and never thermalize.

Affiliated with

Also associated with

No associations

Rating

Zero-th law in structural glasses: an example does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Zero-th law in structural glasses: an example, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zero-th law in structural glasses: an example will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-663