Persistence and the random bond Ising model in two dimensions


We study the zero-temperature persistence phenomenon in the random bond ±J Ising model on a square lattice via extensive numerical simulations. We find strong evidence for "blocking" regardless of the amount disorder present in the system. The fraction of spins which never flips displays interesting nonmonotonic, double-humped behavior as the concentration of ferromagnetic bonds p is varied from zero to one. The peak is identified with the onset of the zero-temperature spin glass transition in the model. The residual persistence is found to decay algebraically and the persistence exponent θ (p) 0.9 over the range 0.1≤p≤0.9. Our results are completely consistent with the result of Gandolfi, Newman, and Stein for infinite systems that this model has "mixed" behavior, namely positive fractions of spins that flip finitely and infinitely often, respectively. [Gandolfi, Newman and Stein, Commun. Math. Phys. 214, 373 (2000).]

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Divisions: College of Engineering & Physical Sciences > School of Informatics and Digital Engineering > Mathematics
College of Engineering & Physical Sciences > Systems analytics research institute (SARI)
Additional Information: ©2006 American Physical Society. Persistence and the random bond Ising model in two dimensions S. Jain and H. Flynn Phys. Rev. E 73, 025701(R) – Published 3 February 2006
Uncontrolled Keywords: Physics and Astronomy(all),Condensed Matter Physics,Statistical and Nonlinear Physics,Mathematical Physics
Publication ISSN: 1550-2376
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://journal ... sRevE.73.025701 (Publisher URL)
PURE Output Type: Article
Published Date: 2006-02-03
Authors: Jain, S.
Flynn, H.



Version: Accepted Version

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