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Published June 7, 1976 | Published
Journal Article Open

Ising-Model Critical Indices in Three Dimensions from the Callan-Symanzik Equation


The coefficients in the Callan-Symanzik equations for a three-dimensional, continuous spin Ising model with an exp(-As^4+Bs^2) spin-weight factor are expanded in the dimensionless, renormalized coupling constant. These series are summed by the Padé-Borel method to yield the critical indices γ=1.241±0.002, η=0.02±0.02, ν=0.63±0.01, and Δ1=0.49±0.01.

Additional Information

©1976 The American Physical Society. Received 1 December 1975. Work supported in part by the U.S. Energy Research and Development Administration, in part by the National Science Foundation, and in part by the National Research Council of Canada.

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