First passage time statistics for two-channel diffusion
Abstract
We present rigorous results for the mean first passage time and first passage time statistics for two-channel Markov additive diffusion in a 3-dimensional spherical domain. Inspired by biophysical examples we assume that the particle can only recognise the target in one of the modes, which is shown to effect a non-trivial first passage behaviour. We also address the scenario of intermittent immobilisation. In both cases we prove that despite the perfectly non-recurrent motion of two-channel Markov additive diffusion in 3 dimensions the first passage statistics at long times do not display Poisson-like behaviour if none of the phases has a vanishing diffusion coefficient. This stands in stark contrast to the standard (one-channel) Markov diffusion counterpart. We also discuss the relevance of our results in the context of cellular signalling.
Keywords
Cite
@article{arxiv.1608.02397,
title = {First passage time statistics for two-channel diffusion},
author = {Aljaz Godec and Ralf Metzler},
journal= {arXiv preprint arXiv:1608.02397},
year = {2017}
}
Comments
Version accepted in Journal of Physics A: Mathematical and Theoretical (for the Special Issue: Emerging talents)