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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Contact process with temporal disorder

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Author(s):
Barghathi, Hatem ; Vojta, Thomas ; Hoyos, Jose A.
Total Authors: 3
Document type: Journal article
Source: Physical Review E; v. 94, n. 2 AUG 9 2016.
Web of Science Citations: 10
Abstract

We investigate the influence of time-varying environmental noise, i.e., temporal disorder, on the nonequilibrium phase transition of the contact process. Combining a real-time renormalization group, scaling theory, and large scale Monte-Carlo simulations in one and two dimensions, we show that the temporal disorder gives rise to an exotic critical point. At criticality, the effective noise amplitude diverges with increasing time scale, and the probability distribution of the density becomes infinitely broad, even on a logarithmic scale. Moreover, the average density and survival probability decay only logarithmically with time. This infinite-noise critical behavior can be understood as the temporal counterpart of infinite-randomness critical behavior in spatially disordered systems, but with exchanged roles of space and time. We also analyze the generality of our results, and we discuss potential experiments. (AU)

FAPESP's process: 15/23849-7 - Quantum spin chains
Grantee:Francisco Castilho Alcaraz
Support type: Research Projects - Thematic Grants