Abstract
We present an improved method for numerical evaluation of the least nonvanishing eigenvalue in dissipative systems. It is based on a modified version of the reactive flux formula for the rate which eliminates the principal shortcomings of the original formulation. A new fourth-order algorithm is used to efficiently integrate the underlying generalized Langevin equation. The proposed methodology provides accurate eigenvalues with a small computational effort for systems which could not be accurately treated with the standard techniques. Its efficiency is tested for Brownian motion in a symmetric double well subject to an exponential friction kernel. The presented results demonstrate the applicability of the method in all regimes of interest, reaching from underdamped to overdamped Brownian motion.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 8:01 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 10, 2024, 11:41 a.m.) |
Indexed | 1 year, 1 month ago (July 10, 2024, 9:56 a.m.) |
Issued | 23 years, 8 months ago (Dec. 1, 2001) |
Published | 23 years, 8 months ago (Dec. 1, 2001) |
Published Print | 23 years, 8 months ago (Dec. 1, 2001) |
@article{Drozdov_2001, title={An improved reactive flux method for evaluation of rate constants in dissipative systems}, volume={115}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1415342}, DOI={10.1063/1.1415342}, number={21}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Drozdov, Alexander N. and Tucker, Susan C.}, year={2001}, month=dec, pages={9675–9684} }