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Convergence of Brownian motion with a scaled Dirac delta potential

Published online by Cambridge University Press:  23 February 2012

Florian Conrad
Affiliation:
Mathematics Department, University of Kaiserslautern, PO Box 3049, 67653 Kaiserslautern, Germany ([email protected]) Mathematics Department, Bielefeld University, PO Box 100131, 33501 Bielefeld, Germany ([email protected])
Martin Grothaus
Affiliation:
Mathematics Department, University of Kaiserslautern, PO Box 3049, 67653 Kaiserslautern, Germany ([email protected])
Janna Lierl
Affiliation:
Department of Mathematics, Cornell University, 120 Malott Hall, Ithaca, NY 14853, USA ([email protected])
Olaf Wittich
Affiliation:
Lehrstuhl A für Mathematik, RWTH Aachen, 52056 Aachen, Germany ([email protected])
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Abstract

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The method of deriving scaling limits using Dirichlet-form techniques has already been successfully applied to a number of infinite-dimensional problems. However, extracting the key tools from these papers is a rather difficult task for non-experts. This paper meets the need for a simple presentation of the method by applying it to a basic example, namely the convergence of Brownian motions with potentials given by n multiplied by the Dirac delta at 0 to Brownian motion with absorption at 0.

Type
Research Article
Copyright
Copyright © Edinburgh Mathematical Society 2012

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