TY  - JOUR
A1  - Nezhadhaghighi, M. Ghasemi
A1  - Chechkin, Aleksei V.
A1  - Metzler, Ralf
T1  - Numerical approach to unbiased and driven generalized elastic model
T2  - The journal of chemical physics : bridges a gap between journals of physics and journals of chemistr
N2  - From scaling arguments and numerical simulations, we investigate the properties of the generalized elastic model (GEM) that is used to describe various physical systems such as polymers, membranes, single-file systems, or rough interfaces. We compare analytical and numerical results for the subdiffusion exponent beta characterizing the growth of the mean squared displacement <(delta h)(2)> of the field h described by the GEM dynamic equation. We study the scaling properties of the qth order moments <vertical bar delta h vertical bar(q)> with time, finding that the interface fluctuations show no intermittent behavior. We also investigate the ergodic properties of the process h in terms of the ergodicity breaking parameter and the distribution of the time averaged mean squared displacement. Finally, we study numerically the driven GEM with a constant, localized perturbation and extract the characteristics of the average drift for a tagged probe.
Y1  - 2014
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/38154
SN  - 0021-9606
SN  - 1089-7690
VL  - 140
IS  - 2
PB  - American Institute of Physics
CY  - Melville
ER  -