TY - JOUR

T1 - Dynamics importance sampling for the activation problem in nonequilibrium continuous systems and maps

AU - Beri, S.

AU - Mannella, R.

AU - McClintock, Peter V. E.

N1 - Copyright 2004 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. http://dx.doi.org/10.1117/12.546889

PY - 2004

Y1 - 2004

N2 - 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.

AB - 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.

U2 - 10.1117/12.546889

DO - 10.1117/12.546889

M3 - Journal article

VL - 5471

SP - 135

EP - 144

JO - Proceedings of SPIE

JF - Proceedings of SPIE

SN - 0277-786X

ER -