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IBM Journal of Research and Development  
Volume 32, Number 1, Page 76 (1988)
Basic Concepts in Quantum and Stochastic T...
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Diffusion from an entrance to an exit

by M. E. Fisher
Asymptotic and exact solutions are derived from first principles by various methods for the moments of the number of steps or traversal time, etc., of a particle which diffuses, most specifically on a linear chain, to an exit site without previously leaving via an entrance site. The presentation is expository and uses standard methods.
Related Subjects: Carrier transport in small structures; Quantum theory and effects