TY  - JOUR
AU  - Popkov, V.
AU  - Schmidt, J.
AU  - Schütz, Gunter M.
TI  - Superdiffusive Modes in Two-Species Driven Diffusive Systems
JO  - Physical review letters
VL  - 112
IS  - 20
SN  - 1079-7114
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2014-04586
SP  - 200602
PY  - 2014
AB  - Using mode-coupling theory and dynamical Monte Carlo simulations, we investigate the scaling behavor of the dynamical structure function of a two-species asymmetric simple exclusion process, consisting of two coupled single-lane asymmetric simple exclusion processes. We demonstrate the appearance of a superdiffusive mode with dynamical exponent z=5/3 in the density fluctuations, along with a Kardar-Parisi-Zhang mode with z=3/2; we argue that this phenomenon is generic for short-ranged driven diffusive systems with more than one conserved density. When the dynamics is symmetric under the interchange of the two lanes, a diffusive mode with z=2 appears instead of the non-Kardar-Parisi-Zhang superdiffusive mode.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000336250100003
DO  - DOI:10.1103/PhysRevLett.112.200602
UR  - https://juser.fz-juelich.de/record/155420
ER  -