First-passage area distribution and optimal fluctuations of fractional Brownian motion.

Autor: Hartmann AK; Institut für Physik, Universitåt Oldenburg - 26111 Oldenburg, Germany., Meerson B; Racah Institute of Physics, Hebrew University of Jerusalem, Jerusalem 91904, Israel.
Jazyk: angličtina
Zdroj: Physical review. E [Phys Rev E] 2024 Jan; Vol. 109 (1-1), pp. 014146.
DOI: 10.1103/PhysRevE.109.014146
Abstrakt: We study the probability distribution P(A) of the area A=∫_{0}^{T}x(t)dt swept under fractional Brownian motion (fBm) x(t) until its first passage time T to the origin. The process starts at t=0 from a specified point x=L. We show that P(A) obeys exact scaling relation P(A)=D^{1/2H}/L^{1+1/H}Φ_{H}(D^{1/2H}A/L^{1+1/H}), where 0
Databáze: MEDLINE