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Finite energy barriers in the random-bond Ising model

I. Morgenstern and H. Horner
Phys. Rev. B 25, 504(R) – Published 1 January 1982
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Abstract

One of the last open questions about the existence of a phase transition in the random-bond Ising model refers to the energy barriers between different ground-state valleys concerning a one-spin-flip dynamic (as, e.g., used in Monte Carlo calculations). A barrier of infinite height would imply a symmetry breaking and therefore some kind of phase transition. The present work finds no such barriers by evaluating correlation functions and the ground-state structures of the square-lattice ±J model.

  • Received 20 July 1981

DOI:https://doi.org/10.1103/PhysRevB.25.504

©1982 American Physical Society

Authors & Affiliations

I. Morgenstern and H. Horner

  • Heidelberg Institut für Theoretische Physik der Universität, Philosophenweg 19, D-6900 Heidelberg, Federal Republic of Germany

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Issue

Vol. 25, Iss. 1 — 1 January 1982

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