کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
978764 933304 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Transitions between wells and escape by diffusion in a one-dimensional potential landscape
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات فیزیک ریاضی
پیش نمایش صفحه اول مقاله
Transitions between wells and escape by diffusion in a one-dimensional potential landscape
چکیده انگلیسی
The time-dependence of the occupation probabilities of neighboring wells due to diffusion in one dimension is formulated in terms of a set of generalized rate equations describing transitions between neighboring wells and escape across a final barrier. The equations contain rate coefficients, memory coefficients, and a long-time coefficient characterizing the amplitude of long-time decay. On a more microscopic level the stochastic process is described by a Smoluchowski equation for the one-dimensional probability distribution. A numerical procedure is presented which allows calculation of the transport coefficients in the set of generalized rate equations on the basis of the Smoluchowski equation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica A: Statistical Mechanics and its Applications - Volume 387, Issue 27, 1 December 2008, Pages 6725-6733
نویسندگان
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