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Title: Insight toward the first-passage time in a bistable potential with highly colored noise
Author: Lindenberg, Katja
Ramírez Piscina, Laureano
Sancho, José M.
Rubia Sánchez, Javier de la
Keywords: Fluctuacions (Física)
Termodinàmica estadística
Fluctuations (Physics)
Transport processes
Issue Date: 1989
Publisher: The American Physical Society
Abstract: The exponential coefficient in the first-passage-time problem for a bistable potential with highly colored noise is predicted to be (8/27 by all existing theories. On the other hand, we show herein that all existing numerical evidence seems to indicate that the coefficient is actually larger by about (4/3, i.e., that the numerical factor in the exponent is approximately (32/81. Existing data cover values of ¿V0/D up to ~20, where V0 is the barrier height, ¿ the correlation time of the noise, and D the noise intensity. We provide an explanation for the modified coefficinet, the explanation also being based on existing numerical simulations. Whether the value (8/27 predicted by all large-¿ theories is achieved for even larger values of ¿V0/D is unknown but appears questionable (except perhaps for enormously large, experimentally inaccessible values of this factor) in view of currently available results.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review A, 1989, vol. 40, núm. 7, p. 4157-4160.
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ISSN: 1050-2947
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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