Diffusion time-scale invariance, randomization processes, and memory effects in Lennard-Jones liquids.
We report the results of calculation of diffusion coefficients for Lennard-Jones liquids, based on the idea of time-scale invariance of relaxation processes in liquids. The results were compared with the molecular dynamics data for the Lennard-Jones system and a good agreement of our theory with these data over a wide range of densities and temperatures was obtained. By calculations of the non-Markovity parameter we have numerically estimated statistical memory effects of diffusion in detail.
Yulmetyev
Renat M
RM
Department of Physics, Kazan State Pedagogical University, 420021 Kazan, Russia. rmy@dtp.ksu.ras.ru
Mokshin
Anatolii V
AV
Hänggi
Peter
P