We study current ßuctuations in lattice gases in the macroscopic limit extending the dynamic approach for density ßuctuations developed in previous articles. More precisely, we establish a large deviation theory for the space-time ßuctuations of the empirical current which include the previous results. We then estimate the probability of a ßuctuation of the average current over a large time interval. It turns out that recent results by Bodineau and Derrida [Phys. Rev. Lett. 92, 180601 (2004)] in certain cases underestimate this probability due to the occurrence of dynamical phase transitions
Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/11697/1174
Titolo: | Current fluctuations in stochastic lattice gases |
Autori: | |
Data di pubblicazione: | 2005 |
Rivista: | |
Abstract: | We study current ßuctuations in lattice gases in the macroscopic limit extending the dynamic approach for density ßuctuations developed in previous articles. More precisely, we establish a large deviation theory for the space-time ßuctuations of the empirical current which include the previous results. We then estimate the probability of a ßuctuation of the average current over a large time interval. It turns out that recent results by Bodineau and Derrida [Phys. Rev. Lett. 92, 180601 (2004)] in certain cases underestimate this probability due to the occurrence of dynamical phase transitions |
Handle: | http://hdl.handle.net/11697/1174 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.