Fluctuations of Omega-killed level-dependent spectrally negative Lévy processes

Zbigniew Palmowski, Meral Şimşek and Apostolos D. Papaioannou

Stochastic Processes and their Applications, 2025, vol. 185, issue C

Abstract: In this paper, we solve exit problems for a level-dependent Lévy process which is exponentially killed with a killing intensity that depends on the present state of the process. Moreover, we analyse the respective resolvents. All identities are given in terms of new generalisations of scale functions (counterparts of the scale function from the theory of Lévy processes), which are solutions of Volterra integral equations. Furthermore, we obtain similar results for the reflected level-dependent Lévy processes. The existence of the solution of the stochastic differential equation for reflected level-dependent Lévy processes is also discussed. Finally, to illustrate our result, the probability of bankruptcy is obtained for an insurance risk process.

Keywords: Level-dependent Lévy processes; Omega model; Fluctuation theory; Volterra equation; Potential measures (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1016/j.spa.2025.104617

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