Current fluctuations in stochastic lattice gases

被引：203

作者：

Bertini, L

De Sole, A

Gabrielli, D

Jona-Lasinio, G

Landim, C

机构：

[1] Univ Roma La Sapienza, Dipartimento Matemat, I-00185 Rome, Italy

[2] Harvard Univ, Dept Math, Cambridge, MA 02138 USA

[3] INDAM, I-00185 Rome, Italy

[4] Univ Aquila, Dipartimento Matemat, I-67100 Laquila, Italy

[5] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[6] Univ Roma La Sapienza, Ist Nazl Fis Nucl, I-00185 Rome, Italy

[7] Inst Matematica Pura & Aplicada, BR-22460 Rio De Janeiro, Brazil

[8] Univ Rouen, CNRS, UMR 6085, F-76128 Mont St Aignan, France

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.94.030601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study current fluctuations in lattice gases in the macroscopic limit extending the dynamic approach for density fluctuations developed in previous articles. More precisely, we establish a large deviation theory for the space-time fluctuations of the empirical current which include the previous results. We then estimate the probability of a fluctuation of the average current over a large time interval. It turns out that recent results by Bodineau and Derrida [Phys. Rev. Lett.PRLTAO0031-9007 92, 180601 (2004)10.1103/PhysRevLett.92.180601] in certain cases underestimate this probability due to the occurrence of dynamical phase transitions.

引用

页数：4