Fluctuations and universality in a catalysis model with long-range reactivity

TL;DR

This study investigates how introducing long-range reactivity into the Ziff-Gulari-Barshad (ZGB) catalysis model alters its critical behavior, shifting its universality class from 2D Ising to mean-field, supported by scaling analysis.

Contribution

It demonstrates that even weak long-range reactivity changes the universality class of the ZGB model from 2D Ising to mean-field.

Findings

Universality class shifts from 2D Ising to mean-field with long-range reactivity

Scaling behaviors support the change in universality class

Long-range reactivity influences critical properties significantly

Abstract

The critical properties of the Ziff-Gulari-Barshad (ZGB) model with the addition of long-range reactivity [C.H. Chan and P.A. Rikvold, Phys. Rev. E 91, 012103 (2015)] are further investigated. The scaling behaviors of the order parameter, susceptibility, and correlation length provide addi- tional evidence that the universality class of the ZGB system changes from the two-dimensional Ising class to the mean-field class with the addition of even a weak long-range reactivity mechanism.