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|Title:||Insight toward the first-passage time in a bistable potential with highly colored noise|
Ramírez Piscina, Laureano
Sancho, José M.
Rubia Sánchez, Javier de la
|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 http://dx.doi.org/10.1103/PhysRevA.40.4157|
|It is part of:||Physical Review A, 1989, vol. 40, núm. 7, p. 4157-4160.|
|Appears in Collections:||Articles publicats en revistes (Física Quàntica i Astrofísica)|
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