Exit problems for reflected Markov-modulated Brownian motion

Breuer, Lothar (2012) Exit problems for reflected Markov-modulated Brownian motion. Journal of Applied Probability, 49 (3). pp. 697-709. ISSN 0021-9002 . (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Let (퓧, 퓙) denote a Markov-modulated Brownian motion (MMBM) and denote its supremum process by S. For some a > 0, let σ (a) denote the time when the reflected process 퓨 := S -- 퓧 first surpasses the level a. Furthermore, let σ_(a) denote the last time before σ (a) when 퓧 attains its current supremum. In this paper we shall derive the joint distribution of Sσ(a), σ_(a), and σ(a), where the latter two will be given in terms of their Laplace transforms. We also provide some remarks on scale matrices for MMBMs with strictly positive variation parameters. This extends recent results for spectrally negative Lévy processes to MMBMs. Due to well-known fluid embedding and state-dependent killing techniques, the analysis applies to Markov additive processes with phase-type jumps as well. The result is of interest to applications such as the dividend problem in insurance mathematics and the buffer overflow problem in queueing theory. Examples will be given for the former.

Item Type: Article
Uncontrolled keywords: exit problem, Markov additive process, Markov-modulated Brownian motion, reflection
Subjects: Q Science > QA Mathematics (inc Computing science) > QA273 Probabilities
Divisions: Faculties > Science Technology and Medical Studies > School of Mathematics Statistics and Actuarial Science > Statistics
Depositing User: Lothar Breuer
Date Deposited: 04 Oct 2012 07:19
Last Modified: 23 Jan 2013 11:33
Resource URI: https://kar.kent.ac.uk/id/eprint/31237 (The current URI for this page, for reference purposes)
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