Effects of external noise on threshold-induced correlations in ferromagnetic systems

Dragutin Jovković, Sanja Janićević, Svetislav Mijatović, Lasse Laurson, Djordje Spasojević

Research output: Contribution to journalArticleScientificpeer-review

Abstract

In the present paper we investigate the impact of the external noise and detection threshold level on the simulation data for the systems that evolve through metastable states. As a representative model of such systems we chose the nonequilibrium athermal random-field Ising model with two types of the external noise, uniform white noise and Gaussian white noise with various different standard deviations, imposed on the original response signal obtained in model simulations. We applied a wide range of detection threshold levels in analysis of the signal and show how these quantities affect the values of exponent γS/T (describing the scaling of the average avalanche size with duration), the shift of waiting time between the avalanches, and finally the collapses of the waiting time distributions. The results are obtained via extensive numerical simulations on the equilateral three-dimensional cubic lattices of various sizes and disorders.

Original languageEnglish
Article number062114
Number of pages12
JournalPhysical Review E
Volume103
Issue number6
DOIs
Publication statusPublished - Jun 2021
Publication typeA1 Journal article-refereed

Publication forum classification

  • Publication forum level 2

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

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