Scaled Penalization of Brownian Motion with Drift and the Brownian Ascent

Scaled Penalization of Brownian Motion with Drift and the Brownian Ascent
Author: Hugo Panzo
Publisher:
Total Pages: 66
Release: 2018
Genre: Brownian motion processes
ISBN:

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We study a scaled version of a two-parameter Brownian penalization model introduced by Roynette-Vallois-Yor. The original model penalizes Brownian motion with drift h by a weight process involving the running maximum of the Brownian motion and a parameter volume It was shown there that the resulting penalized process exhibits three distinct phases corresponding to different regions of the (v,h)-plane. In this paper, we investigate the effect of penalizing the Brownian motion concurrently with scaling and identify the limit process. This extends a result of Roynette-Yor to the whole parameter plane and reveals two additional critical phases occurring at the boundaries between the parameter regions. One of these novel phases is Brownian motion conditioned to end at its maximum, a process we call the Brownian ascent. We then relate the Brownian ascent to some well-known Brownian path fragments and to a random scaling transformation of Brownian motion recently studied by Rosenbaum-Yor.

Séminaire de Probabilités L

Séminaire de Probabilités L
Author: Catherine Donati-Martin
Publisher: Springer Nature
Total Pages: 562
Release: 2019-11-19
Genre: Mathematics
ISBN: 3030285359

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This milestone 50th volume of the "Séminaire de Probabilités" pays tribute with a series of memorial texts to one of its former editors, Jacques Azéma, who passed away in January. The founders of the "Séminaire de Strasbourg", which included Jacques Azéma, probably had no idea of the possible longevity and success of the process they initiated in 1967. Continuing in this long tradition, this volume contains contributions on state-of-art research on Brownian filtrations, stochastic differential equations and their applications, regularity structures, quantum diffusion, interlacing diffusions, mod-Ø convergence, Markov soup, stochastic billiards and other current streams of research.

Research Reports

Research Reports
Author:
Publisher:
Total Pages:
Release: 1999
Genre:
ISBN:

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Penalising Brownian Paths

Penalising Brownian Paths
Author: Bernard Roynette
Publisher: Springer
Total Pages: 291
Release: 2009-07-31
Genre: Mathematics
ISBN: 3540896996

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Penalising a process is to modify its distribution with a limiting procedure, thus defining a new process whose properties differ somewhat from those of the original one. We are presenting a number of examples of such penalisations in the Brownian and Bessel processes framework. The Martingale theory plays a crucial role. A general principle for penalisation emerges from these examples. In particular, it is shown in the Brownian framework that a positive sigma-finite measure takes a large class of penalisations into account.

Handbook of Brownian Motion - Facts and Formulae

Handbook of Brownian Motion - Facts and Formulae
Author: Andrei N. Borodin
Publisher: Springer Science & Business Media
Total Pages: 710
Release: 2015-07-14
Genre: Mathematics
ISBN: 9783764367053

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Here is easy reference to a wealth of facts and formulae associated with Brownian motion, collecting in one volume more than 2500 numbered formulae. The book serves as a basic reference for researchers, graduate students, and people doing applied work with Brownian motion and diffusions, and can be used as a source of explicit examples when teaching stochastic processes.