Contact process with simultaneous spatial and temporal disorder
Abstract
We study the absorbing-state phase transition in the one-dimensional contact process under the combined influence of spatial and temporal random disorders. We focus on situations in which the spatial and temporal disorders decouple. Couched in the language of epidemic spreading, this means that some spatial regions are, at all times, more favorable than others for infections, and some time periods are more favorable than others independent of spatial location. We employ a generalized Harris criterion to discuss the stability of the directed percolation universality class against such disorder. We then perform large-scale Monte Carlo simulations to analyze the critical behavior in detail. We also discuss how the Griffiths singularities that accompany the nonequilibrium phase transition are affected by the simultaneous presence of both disorders.
Cite
@article{arxiv.2207.11798,
title = {Contact process with simultaneous spatial and temporal disorder},
author = {Xuecheng Ye and Thomas Vojta},
journal= {arXiv preprint arXiv:2207.11798},
year = {2022}
}
Comments
14 pages, 14 figures included, final version as published