Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2003-03-04
Physics
Condensed Matter
Statistical Mechanics
4 pages, 2 figures
Scientific paper
10.1103/PhysRevE.68.027105
An approximate method for studying activation over a fluctuating barrier of potential is proposed. It involves considering separately the slow and fast components of barrier fluctuations, and it applies for any value of their correlation time $\tau$. It gives exact results for the limiting values $\tau \to 0$ and $\tau \to \infty$, and the agreement with numerics in between is also excellent, both for dichotomic and Gaussian barrier perturbations.
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