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Prog. Theor. Phys. Supplement No.157 (2005) pp. 64-68

Fragility of the Equilibrium State in the Four-Dimensional ±J Ising Spin Glass

Munetaka Sasaki,¹ Koji Hukushima,² Hajime Yoshino³ and Hajime Takayama¹

¹Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
²Department of Basic Science, University of Tokyo, Tokyo 153-8902, Japan
³Department of Earth and Space, Osaka University, Toyonoka 560-0043, Japan

Abstract:

Domain-wall free-energy, the difference in the free-energy between the system with the periodic boundary condition (BC) and that with the anti-periodic BC, is measured in the 4 dimensional ±J Ising spin glass. Temperature dependence of the domain-wall free-energy for each sample shows that the favorable BC changes with temperature, suggesting the existence of temperature chaos. We also investigate fragility of the equilibrium state against small changes of couplings { J_ij } (bond chaos) by measuring the domain-wall free-energy. As a result, we find scaling behavior which suggests that the chaos exponent and the scaling function for temperature perturbation are the same as those for bond perturbation, meaning that temperature chaos and bond chaos belong to the same universarity class on fragility.

URL : http://ptp.ipap.jp/link?PTPS/157/64/
DOI : 10.1143/PTPS.157.64

[ Full Text PDF : FREE ACCESS (173K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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Citing Article(s) :

1. Progress of Theoretical Physics Supplement No.157 (2005) pp. 29-33 :

   Scaling Approach to Glassy Stationary States of Spin-Glasses under Chaos Effects

   Hajime Yoshino and Petra E. Jönsson

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