Crossover to the KPZ equation

• Author(s): Gonçalves, Patrícia ; Jara, Milton
• Date: 2010
• Persistent ID: http://hdl.handle.net/1822/25232
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): Kpz equation; Crossover; Weakly asymmetric simple exclusion; Equilibrium fluctuations
• Document Type: Conference Object
• Language: English

Description

We consider the weakly asymmetric simple exclusion process and we show that the density field is governed by an Ornstein-Uhlenbeck process for strength asymmetry n2-γ if γϵ (1=2; 1), while for γ= 1=2 it is an energy solution of the KPZ equation.