Journal Article

FZJ-2015-05138

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Universality Classes in Two-Component Driven Diffusive Systems

Popkov, V. ; Schmidt, J. ; Schütz, G. M. (Corresponding author)FZJ*

2015
Springer Science + Business Media B.V. New York, NY [u.a.]

This record in other databases:    

Please use a persistent id in citations: doi:10.1007/s10955-015-1241-x

Abstract: We study time-dependent density fluctuations in the stationary state of driven diffusive systems with two conserved densities ρλ. Using Monte-Carlo simulations of two coupled single-lane asymmetric simple exclusion processes we present numerical evidence for universality classes with dynamical exponents z=(1+5√)/2 and z=3/2 (but different from the Kardar–Parisi–Zhang (KPZ) universality class), which have not been reported yet for driven diffusive systems. The numerical asymmetry of the dynamical structure functions converges slowly for some of the non-KPZ superdiffusive modes for which mode coupling theory predicts maximally asymmetric z-stable Lévy scaling functions. We show that all universality classes predicted by mode coupling theory for two conservation laws are generic: they occur in two-component systems with nonlinearities in the associated currents already of the minimal order ρ2λρμ. The macroscopic stationary current-density relation and the compressibility matrix determine completely all permissible universality classes through the mode coupling coefficients which we compute explicitly for general two-component systems.

---

Contributing Institute(s):

1. Theorie der Weichen Materie und Biophysik (IAS-2)
2. Theorie der Weichen Materie und Biophysik (ICS-2)

Research Program(s):

1. 551 - Functional Macromolecules and Complexes (POF3-551) (POF3-551)

Appears in the scientific report 2015

---

Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

---