Nonlinear Sciences – Chaotic Dynamics
Scientific paper
2002-03-12
Nonlinear Sciences
Chaotic Dynamics
4 pages (incl. 5 figures), RevTeX
Scientific paper
10.1103/PhysRevLett.89.180601
We present large scale simulations for a one-dimensional chain of hard-point particles with alternating masses. We correct several claims in the recent literature based on much smaller simulations. Both for boundary conditions with two heat baths at different temperatures at both ends and from heat current autocorrelations in equilibrium we find heat conductivities kappa to diverge with the number N of particles. These depended very strongly on the mass ratios, and extrapolation to N -> infty resp. t -> infty is difficult due to very large finite-size and finite-time corrections. Nevertheless, our data seem compatible with a universal power law kappa ~ N^alpha with alpha approx 0.33. This suggests a relation to the Kardar-Parisi-Zhang model. We finally show that the hard-point gas with periodic boundary conditions is not chaotic in the usual sense and discuss why the system, when kept out of equilibrium, leads nevertheless to energy dissipation and entropy production.
Grassberger Peter
Nadler Walter
Yang Lantian
No associations
LandOfFree
Heat Conduction and Entropy Production in a One-Dimensional Hard-Particle Gas 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 Heat Conduction and Entropy Production in a One-Dimensional Hard-Particle Gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat Conduction and Entropy Production in a One-Dimensional Hard-Particle Gas will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-263141