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Название: Ground State Degeneracy and Ferromagnetism in a Spin Glass
Авторы: Avron J. E., Roepstorff G.
Аннотация:
We prove three results for the two-dimensional Ising spin glass model on a square lattice: (a) finite entropy for the ground state; (b) ferromagnetism for low concentrations of antiferromagnetic bonds and low emperatures; (c) vanishing magnetization for a spin glass with equal concentrations of ferro- and anti-
ferromagnetic bonds.