Abstract
We discuss the probabilistic representation of the solutions of the heat equation perturbed by a repulsive point interaction in terms of a perturbation of Brownian motion, via a Feynman-Kac formula involving a local time functional. An application to option pricing is given, interpolating between the extreme cases of classical Black-Scholes options and knockouts having the barrier situated exactly at the exercise price.
| Original language | English |
|---|---|
| Pages (from-to) | 257-265 |
| Number of pages | 9 |
| Journal | Reports on Mathematical Physics |
| Volume | 75 |
| Issue number | 2 |
| DOIs | |
| State | Published - 1 Apr 2015 |
Bibliographical note
Publisher Copyright:© 2015 Polish Scientific Publishers.
Keywords
- Black-Scholes equation
- Brownian motion
- Feynman-Kac formula
- Heat equation
- Heat kernel
- Local time
- Option pricing
- Point interactions
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Mathematical Physics