Spatiotemporal generalization of the Harris criterion and its application to diffusive disorder.
Phys Rev E
; 93(3): 032143, 2016 Mar.
Article
en En
| MEDLINE
| ID: mdl-27078328
ABSTRACT
We investigate how a clean continuous phase transition is affected by spatiotemporal disorder, i.e., by an external perturbation that fluctuates in both space and time. We derive a generalization of the Harris criterion for the stability of the clean critical behavior in terms of the space-time correlation function of the external perturbation. As an application, we consider diffusive disorder, i.e., an external perturbation governed by diffusive dynamics, and its effects on a variety of equilibrium and nonequilibrium critical points. We also discuss the relation between diffusive disorder and diffusive dynamical degrees of freedom in the example of model C of the Hohenberg-Halperin classification and comment on Griffiths singularities.
Texto completo:
1
Banco de datos:
MEDLINE
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Phys Rev E
Año:
2016
Tipo del documento:
Article
País de afiliación:
Estados Unidos