Abstract

We study the effects of quenched extended impurities on nonequilibrium phase transitions in the directed percolation universality class. We show that these impurities have a dramatic effect: they completely destroy the sharp phase transition by smearing. This is caused by rare strongly coupled spatial regions which can undergo the phase transition independently from the bulk system. We use extremal statistics to determine the stationary state as well as the dynamics in the tail of the smeared transition, and we illustrate the results by computer simulations.

Department(s)

Physics

Sponsor(s)

National Science Foundation (U.S.)
University of Missouri Research Board

Keywords and Phrases

Computer Simulation; Hamiltonians; Grain Boundaries; Nonequilibrium Phase Transitions; Quenching

International Standard Serial Number (ISSN)

1539-3755; 2470-0045

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2004 American Physical Society (APS), All rights reserved.

Included in

Physics Commons

Share

 
COinS