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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Weighted-ensemble Brownian dynamics simulation: Sampling of rare events in nonequilibrium systems

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Kromer, Justus A. [1] ; Schimansky-Geier, Lutz [1] ; Toral, Raul [2]
Total Authors: 3
[1] Humboldt Univ, Dept Phys, D-12489 Berlin - Germany
[2] CSIC UIB, IFISC, E-07122 Palma De Mallorca - Spain
Total Affiliations: 2
Document type: Journal article
Source: Physical Review E; v. 87, n. 6 JUN 28 2013.
Web of Science Citations: 7

We provide an algorithm based on weighted-ensemble (WE) methods, to accurately sample systems at steady state. Applying our method to different one- and two-dimensional models, we succeed in calculating steady-state probabilities of order 10(-300) and reproduce the Arrhenius law for rates of order 10(-280). Special attention is payed to the simulation of nonpotential systems where no detailed balance assumption exists. For this large class of stochastic systems, the stationary probability distribution density is often unknown and cannot be used as preknowledge during the simulation. We compare the algorithm's efficiency with standard Brownian dynamics simulations and the original WE method. (AU)

FAPESP's process: 11/50151-0 - Dynamical phenomena in complex networks: fundamentals and applications
Grantee:Elbert Einstein Nehrer Macau
Support type: Research Projects - Thematic Grants