Particle current in symmetric exclusion process with time-dependent hopping rates
| dc.creator | Marathe, Rahul | |
| dc.creator | Jain, Kavita | |
| dc.creator | Dhar, Abhishek | |
| dc.date | 2008-09-15 | |
| dc.date | 2008-11-17 | |
| dc.date.accessioned | 2026-07-07T10:18:19Z | |
| dc.date.available | 2026-07-07T10:18:19Z | |
| dc.description | In a recent study, (Jain et al 2007 Phys. Rev. Lett. 99 190601), a symmetric exclusion process with time-dependent hopping rates was introduced. Using simulations and a perturbation theory, it was shown that if the hopping rates at two neighboring sites of a closed ring vary periodically in time and have a relative phase difference, there is a net DC current which decreases inversely with the system size. In this work, we simplify and generalize our earlier treatment. We study a model where hopping rates at all sites vary periodically in time, and show that for certain choices of relative phases, a DC current of order unity can be obtained. Our results are obtained using a perturbation theory in the amplitude of the time-dependent part of the hopping rate. We also present results obtained in a sudden approximation that assumes large modulation frequency. | |
| dc.description | 17 pages, 2 figures | |
| dc.identifier | https://arxiv.org/abs/0809.2468 | |
| dc.identifier | http://arxiv.org/abs/0809.2468 | |
| dc.identifier | J. Stat. Mech. (2008) P11014 | |
| dc.identifier | doi:10.1088/1742-5468/2008/11/P11014 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/174146 | |
| dc.subject | Statistical Mechanics | |
| dc.title | Particle current in symmetric exclusion process with time-dependent hopping rates | |
| dc.type | text |