Journal
PHYSICAL REVIEW LETTERS
Volume 91, Issue 8, Pages -Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.91.087201
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We study domain wall energies of two dimensional spin glasses. The scaling of these energies depends on the model's distribution of quenched random couplings, falling into three different classes. The first class is associated with the exponent thetaapproximate to-0.28; the other two classes have theta=0, as can be justified theoretically. In contrast to previous claims, we find that theta=0 does not indicate d=d(l)(c) but rather dless than or equal tod(l)(c), where d(l)(c) is the lower critical dimension.
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