2022/04/14 by J. Kevin Pierce, Pierce, J. Kevin
Biochemistry, Genetics and Molecular Biology · Earth and Planetary Sciences · Medicine · #Diffusion and Search Dynamics #FOS: Physical sciences #Mathematical and Theoretical Epidemiology and Ecology Models #Statistical Mechanics (cond-mat.stat-mech) #nanoparticles nucleation surface interactions
paper · pdf · doi:10.48550/arxiv.2204.07215
openalex publication_date 2022/04/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This paper presents a diffusion process with a novel resetting mechanism in which the amplitude of the process is instantaneously converted to a proportion of its value at random times. This model is described by a Langevin equation with both additive Gaussian white noise and multiplicative Poisson shot noise terms. The distribution function obeys a pantograph equation, a functional partial differential equation evaluated at two amplitudes simultaneously. From this equation the exact statistical moments and steady-state distribution of the process are calculated. The distribution interpolates between exponential and Gaussian extremes depending on the proportion of the amplitude lost in each reset. These results will be useful for applications in which stochastic quantities are suddenly reduced in proportion to their values due to random events.