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Configurational transition in a Fleming-Viot-type model and probabilistic interpretation of Laplacian eigenfunctions
(Institute of Physics, 1996-06-07)
We analyze and simulate a two-dimensional Brownian multi-type particle system with death and branching (birth) depending on the position of particles of different types. The system is confined in the two-dimensional box, whose boundaries act as the sink of Brownian particles. The branching rate matches the death rate so that ...
Eigenvalue expansions for Brownian motion with an application to occupation times
(Institute of Mathematical Statistics, 1996-01-31)
Let B be a Borel subset of R [to the power of] d with finite volume. We give an eigenvalue expansion for the transition densities of Brownian motion killed on exiting B. Let A [subscript] 1 be the time spent by Brownian motion in a closed cone with vertex 0 until time one. We show that lim [subscript] u [approaching] 0 log P ...