20 papers
A simple deterministic and time reversal invariant thermostat
Henk van Beijeren
A simple deterministic and time reversal invariant type of thermostat is proposed to be used for computer simulations of classical systems. It acts on collisions with the walls of…
Radius of curvature approach to the Kolmogorov-Sinai entropy of dilute hard particles in equilibrium
Astrid S. de Wijn, Henk van Beijeren
We consider the Kolmogorov-Sinai entropy for dilute gases of hard disks or spheres. This can be expanded in density as $h_{\mathrm{KS}} \propto n N [\ln n a^d+ B + O(n a^d)+O(1…
Exact results for anomalous transport in one dimensional Hamiltonian systems
Henk van Beijeren
Anomalous transport in one dimensional translation invariant Hamiltonian systems with short range interactions, is shown to belong in general to the KPZ universality class. Exact a…
Systematic Density Expansion of the Lyapunov Exponents for a Two-dimensional Random Lorentz Gas
H. V. Kruis, Debabrata Panja, Henk van Beijeren
We study the Lyapunov exponents of a two-dimensional, random Lorentz gas at low density. The positive Lyapunov exponent may be obtained either by a direct analysis of the dynamics,…
Fractals and dynamical chaos in a random 2D Lorentz gas with sinks
I. Claus, P. Gaspard, H. van Beijeren
Two-dimensional random Lorentz gases with absorbing traps are considered in which a moving point particle undergoes elastic collisions on hard disks and annihilates when reaching a…
Front propagation techniques to calculate the largest Lyapunov exponent of dilute hard disk gases
R. van Zon, H. van Beijeren
A kinetic approach is adopted to describe the exponential growth of a small deviation of the initial phase space point, measured by the largest Lyapunov exponent, for a dilute syst…