2026-06-29T02:29:28Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/585932025-04-09T18:13:27Zcom_20.500.14352_14col_20.500.14352_15
Velocity autocorrelation function in lattice gases from the ring kinetic-theory - comparison with numerical simulations
Van Velzen, G. A.
Brito López, Ricardo
536
Molecular-Dynamics Calculations
Asymptotic Time Behavior
Mode-Coupling Theory
Cellular Automata
Diffusion
Hydrodynamics
Fluids
Decay
Terms
Tails
Termodinámica
2213 Termodinámica
We obtain the complete time dependence of the velocity autocorrelation function (VACF) for lattice gas cellular automata, using ring kinetic theory. This theory accounts for the simplest correlated collisions that improve on the molecular chaos approach, and yields a closed equation for the VACF that we evaluate for both infinite and finite systems. We compare our analytical results with numerical simulations at all times, as well as with long-time results of the mode coupling theories, finding a Very good agreement for all times at all densities.
Depto. de Estructura de la Materia, Física Térmica y Electrónica
Fac. de Ciencias Físicas
TRUE
pub
2023-06-20T18:46:49Z
2023-06-20T18:46:49Z
1995-08
journal article
https://hdl.handle.net/20.500.14352/58593
0022-4715
10.1007/BF02178548
metadata only access
Springer