UNDERDAMPED DIFFUSION IN THE EGG-CARTON POTENTIAL

Authors
CARATTI G FERRANDO R SPADACINI R TOMMEI GE
Citation
G. Caratti et al., UNDERDAMPED DIFFUSION IN THE EGG-CARTON POTENTIAL, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 55(4), 1997, pp. 4810-4811
Citations number
9
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
55
Issue
4
Year of publication
1997
Pages
4810 - 4811
Database
ISI
SICI code
1063-651X(1997)55:4<4810:UDITEP>2.0.ZU;2-Z
Abstract
It is shown by numerical solution of the Fokker-Planck equation in a c oupled two-dimensional potential of square symmetry (egg-carton potent ial) that an ''anomalous'' dependence of the diffusion coefficient on the friction (D(proportional to)eta(-sigma), with sigma<1) holds in a rather wide friction range in the underdamped regime. The Exponent sig ma is not universal, but depends on the parameters of the potential.