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We construct a class of one-dimensional diffusion processes on the particles of branching Brownian motion that are symmetric with respect to the limits of random martingale measures. These measures are associated with the extended extremal…

概率论 · 数学 2018-11-07 Sebastian Andres , Lisa Hartung

Based on an optimal rate wavelet series representation, we derive a local modulus of continuity result with a refined almost sure upper bound for fractional Brownian motion. \sloppy The obtained upper bound of the small fractional Brownian…

概率论 · 数学 2023-10-20 Qidi Peng , Nan Rao

We investigate the motion of an inert (massive) particle being impinged from below by a particle performing (reflected) Brownian motion. The velocity of the inert particle increases in proportion to the local time of collisions and…

概率论 · 数学 2017-02-24 Sayan Banerjee , Krzysztof Burdzy , Mauricio Duarte

We study the extremes of variable speed branching Brownian motion (BBM) where the time-dependent "speed functions", which describe the time-inhomogeneous variance, converge to the identity function. We consider general speed functions lying…

概率论 · 数学 2025-03-03 Alexander Alban , Anton Bovier , Annabell Gros , Lisa Hartung

In this paper, we develop a theory of common decomposition for two correlated Brownian motions, in which, by using change of time method, the correlated Brownian motions are represented by a triplet of processes, $(X,Y,T)$, where $X$ and…

数理金融 · 定量金融 2020-11-10 Tianyao Chen , Xue Cheng , Jingping Yang

Circular Dyson Brownian motion describes the Brownian dynamics of particles on a circle (periodic boundary conditions), interacting through a logarithmic, long-range two-body potential. Within the log-gas picture of random matrix theory, it…

统计力学 · 物理学 2024-06-11 Wouter Buijsman

We describe an exact simulation algorithm for the increments of Brownian motion on a sphere of arbitrary dimension, based on the skew-product decomposition of the process with respect to the standard geodesic distance. The radial process is…

概率论 · 数学 2020-10-30 Aleksandar Mijatović , Veno Mramor , Gerónimo Uribe Bravo

Our aim in this article is to provide explicit computable estimates for the cumulative distribution function (c.d.f.) and the $p$-th order moment of the exponential functional of a fractional Brownian motion (fBM) with drift. Using…

概率论 · 数学 2024-03-18 José Alfredo López-Mimbela , Gerardo Pérez-Suárez

By using the law of the excursions of Brownian motion with drift, we find the distribution of the $n-$th passage time of Brownian motion through a straight line $S(t)= a + bt.$ In the special case when $b = 0,$ we extend the result to a…

概率论 · 数学 2017-03-03 Mario Abundo

We calculate the effective long-term convective velocity and dispersive motion of an ellipsoidal Brownian particle in three dimensions when it is subjected to a constant external force. This long-term motion results as a "net" average…

统计力学 · 物理学 2018-12-19 Erik Aurell , Stefano Bo , Marcelo Dias , Ralf Eichhorn , Raffaele Marino

We consider a one-dimensional diffusion process $X$ in a $(-\kappa/2)$-drifted Brownian potential for $\kappa\neq 0$. We are interested in the maximum of its local time, and study its almost sure asymptotic behaviour, which is proved to be…

概率论 · 数学 2015-11-19 Alexis Devulder

We study the maximum of Branching Brownian motion (BBM) with branching rates that vary in space, via a periodic function of a particle's location. This corresponds to a variant of the F-KPP equation in a periodic medium, extensively studied…

概率论 · 数学 2020-05-22 Eyal Lubetzky , Chris Thornett , Ofer Zeitouni

We obtain the uniform convergence rate for the Gaussian fluctuation of the radial part of the Brownian motion on a hyperbolic space. We also show that this result is sharp if the dimension of the hyperbolic space is two or general odd. Our…

概率论 · 数学 2023-09-11 Yuichi Shiozawa

The Arcsine laws of Brownian motion are a collection of results describing three different statistical quantities of one-dimensional Brownian motion: the time at which the process reaches its maximum position, the total time the process…

统计力学 · 物理学 2023-08-03 Toby Kay , Luca Giuggioli

We consider critical branching Brownian motion with absorption, in which there is initially a single particle at $x > 0$, particles move according to independent one-dimensional Brownian motions with the critical drift of $-\sqrt{2}$, and…

概率论 · 数学 2013-10-01 Julien Berestycki , Nathanael Berestycki , Jason Schweinsberg

Consider p independent Brownian motions in R^d, each running up to its first exit time from an open domain B, and their intersection local time l as a measure on B. We give a sharp criterion for the finiteness of exponential moments,…

概率论 · 数学 2007-05-23 Wolfgang Koenig , Peter Moerters

In this paper, we investigate the optimal control problem for systems driven by mixed fractional Brownian motion (including a fractional Brownian motion with Hurst parameter $H>1/2$ and the standard Brownian motion). By using Malliavin…

最优化与控制 · 数学 2024-12-25 Yuhang Li , Yuecai Han

We propose a macroscopic realization of planar Brownian motion by vertically vibrated disks. We perform a systematic statistical analysis of many random trajectories of individual disks. The distribution of increments is shown to be almost…

统计力学 · 物理学 2018-12-19 Yann Lanoiselée , Guillaume Briand , Olivier Dauchot , Denis S. Grebenkov

In this paper we study the drifted Brownian meander, that is a Brownian motion starting from $ u $ and subject to the condition that $ \min_{ 0\leq z \leq t} B(z)> v $ with $ u > v $. The limiting process for $ u \downarrow v $ is analyzed…

概率论 · 数学 2019-03-05 Francesco Iafrate , Enzo Orsingher

This article contains both a point process and a sequential description of the greatest convex minorant of Brownian motion on a finite interval. We use these descriptions to provide new analysis of various features of the convex minorant…

概率论 · 数学 2010-11-16 Jim Pitman , Nathan Ross