## The Annals of Applied Probability

### The snapping out Brownian motion

Antoine Lejay

#### Abstract

We give a probabilistic representation of a one-dimensional diffusion equation where the solution is discontinuous at $0$ with a jump proportional to its flux. This kind of interface condition is usually seen as a semi-permeable barrier. For this, we use a process called here the snapping out Brownian motion, whose properties are studied. As this construction is motivated by applications, for example, in brain imaging or in chemistry, a simulation scheme is also provided.

#### Article information

Source
Ann. Appl. Probab., Volume 26, Number 3 (2016), 1727-1742.

Dates
Revised: July 2015
First available in Project Euclid: 14 June 2016

https://projecteuclid.org/euclid.aoap/1465905017

Digital Object Identifier
doi:10.1214/15-AAP1131

Mathematical Reviews number (MathSciNet)
MR3513604

Zentralblatt MATH identifier
1345.60088

#### Citation

Lejay, Antoine. The snapping out Brownian motion. Ann. Appl. Probab. 26 (2016), no. 3, 1727--1742. doi:10.1214/15-AAP1131. https://projecteuclid.org/euclid.aoap/1465905017

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