Year: 2005
Type: article
Abstract: The effective interaction between two probe particles in a one-dimensional driven system is studied. The analysis is carried out using an asymmetric simple exclusion process with nearest-neighbor interactions. It is found that the driven fluid mediates an effective long-range attraction between the two probes, with a force that decays at large distances x as − b / x , where b is a function of the interaction parameters. Depending on the amplitude b , the two probes may form one of three states: a) an unbound state, where the distance grows diffusively with time; b) a weakly bound state, in which the distance grows sub-diffusively; and c) a strongly bound state, where the average distance stays finite in the long-time limit. Similar results are found for the behavior of any finite number of probes.
Source: Europhysics Letters (EPL)
Authors: E Levine, D Mukamel, G. M Schütz
Institutions: Weizmann Institute of Science, Forschungszentrum Jülich
Language: English
Subfield: Mathematical Physics
Field: Mathematics
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1972024081