Aspect-Ratio Scaling and The Stiffness Exponent θ for Ising Spin Glasses
A. C. Carter, A. J. Bray, M. A. Moore
Abstract
We introduce the technique of aspect-ratio scaling to study the scale-dependence of interfacial energies in Ising spin glasses, and we show how one can use it to determine the stiffness exponent θ in a clean way, with results that are independent of the domain-wall-forcing boundary conditions imposed on the system. In space dimension d=2 we obtain θ= -0.282(3) for a Gaussian distribution of exchange interactions.
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