A stochastic Stefan-type problem under first-order boundary conditions

Marvin S. Mueller

Papers from arXiv.org

Abstract: Moving boundary problems allow to model systems with phase transition at an inner boundary. Driven by problems in economics and finance, in particular modeling of limit order books, we consider a stochastic and non-linear extension of the classical Stefan-problem in one space dimension, where the paths of the moving interface might have unbounded variation. Working on the distribution space, Ito-Wentzell formula for SPDEs allows to transform these moving boundary problems into partial differential equations on fixed domains. Rewriting the equations into the framework of stochastic evolution equations, we apply results based on stochastic maximal $L^p$-regularity to obtain existence, uniqueness and regularity of local solutions. Moreover, we observe that explosion might take place due to the boundary interaction even when the coefficients of the original problem have linear growths.

Date: 2016-01, Revised 2018-10
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Published in Ann. Appl. Probab., Volume 28, Number 4 (2018), 2335-2369

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Persistent link: https://EconPapers.repec.org/RePEc:arx:papers:1601.03968

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