A Remark on the Heat Equation with a Point Perturbation, the Feynman-Kac Formula with Local Time and Derivative Pricing

Sergio Albeverio, Silvestro Fassari, Fabio Rinaldi

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

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 languageEnglish
Pages (from-to)257-265
Number of pages9
JournalReports on Mathematical Physics
Volume75
Issue number2
DOIs
StatePublished - 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

Fingerprint

Dive into the research topics of 'A Remark on the Heat Equation with a Point Perturbation, the Feynman-Kac Formula with Local Time and Derivative Pricing'. Together they form a unique fingerprint.

Cite this