Rare events in generalized Levy Walks and the Big Jump principle.

ABSTRACT: The prediction and control of rare events is an important task in disciplines that range from physics and biology, to economics and social science. The Big Jump principle deals with a peculiar aspect of the mechanism that drives rare events. According to the principle, in heavy-tailed processes a rare huge fluctuation is caused by a single event and not by the usual coherent accumulation of small deviations. We consider generalized Lévy walks, a class of stochastic processes with power law distributed step durations and with complex microscopic dynamics in the single stretch. We derive the bulk of the probability distribution and using the big jump principle, the exact form of the tails that describes rare events. We show that the tails of the distribution present non-universal and non-ana

SUBMITTER: Vezzani A 

PROVIDER: S-EPMC7026067 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature