Informatics and Applications
2015, Volume 9, Issue 2, pp 39-49
APPLICATION OF THE PUGACHEV-SVESHNIKOV EQUATION TO THE BAXTER OCCUPATION TIME PROBLEM
- S. V. Berezin
- O. I. Zayats
Abstract
The Baxter problem, that is, an occupation (sojourn) time above a moving barrier, for a skew Brownian motion is considered. The latter is known as a model of a semipermeable barrier which permits either movement through it or reflection to the opposite direction with a specified probability The Pugachev-Sveshnikov equation for a continuous Markov process is used to obtain an analytic solution of the problem. The generic method to solve the Pugachev-Sveshnikov equation for occupation-time type problems involves its reduction to a certain Riemann boundary value problem. This problem is solved, and the occupation time probability density function is derived.
Along the way, some additional characteristics of the skew Brownian motion are obtained such as the first passage time, nonexceedance probability, occupation time moments, and some other characteristics.
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[+] About this article
Title
APPLICATION OF THE PUGACHEV-SVESHNIKOV EQUATION TO THE BAXTER OCCUPATION TIME PROBLEM
Journal
Informatics and Applications
2015, Volume 9, Issue 2, pp 39-49
Cover Date
2015-02-30
DOI
10.14357/19922264150205
Print ISSN
1992-2264
Publisher
Institute of Informatics Problems, Russian Academy of Sciences
Additional Links
Key words
Markov process; Pugachev equation; Pugachev–Sveshnikov equation; Riemann boundary value
problem; stochastic mechanics; skew Brownian motion; occupation time; sojourn time
Authors
S. V. Berezin  and O. I. Zayats
Author Affiliations
Institute of Applied Mathematics and Mechanics, Peter the Great St. Petersburg State Polytechnic University, 29 Politekhnicheskaya Str., St. Petersburg 195251, Russian Federation
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