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Proceedings Paper

Dynamics importance sampling for the activation problem in nonequilibrium continuous systems and maps
Author(s): Stefano Beri; Riccardo Mannella; Peter V. E. McClintock
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Paper Abstract

A numerical approach based on dynamic importance sampling (DIMS) is introduced to investigate the activation problem in two-dimensional nonequilibrium systems. DIMS accelerates the simulations and allows the investigation to access noise intensities that were previously forbidden. A shift in the position of the escape path compared to a heteroclinic trajectory calculated in the limit of zero noise intensity is directly observed. A theory to account for such shifts is presented and shown to agree with the simulations for a wide range of noise intensities.

Paper Details

Date Published: 25 May 2004
PDF: 10 pages
Proc. SPIE 5471, Noise in Complex Systems and Stochastic Dynamics II, (25 May 2004); doi: 10.1117/12.546889
Show Author Affiliations
Stefano Beri, Lancaster Univ. (United Kingdom)
Riccardo Mannella, Univ. di Pisa (Italy)
INFM (Italy)
Peter V. E. McClintock, Lancaster Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 5471:
Noise in Complex Systems and Stochastic Dynamics II
Zoltan Gingl, Editor(s)

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