Thermodynamics of two-dimensional Heisenberg ferromagnetic in the renormalization group approach

T. N. Antsygina, V. A. Slyusarev

Physical Engineering Institute of Low Temperatures, UkrSSR Academy of Sciences

Abstract: The method of describing thermodynamical functions of two-dimensional isotropic Heisenberg ferromagnetics based on the generalization of $2+\varepsilon $-expansion is proposed. The derived interpolation formulae allow to pass smoothly to the results obtained by high temperature expansion methods.

Received: 26.10.1994

 English version: Theoretical and Mathematical Physics, 1995, 104:3, 1178–1183

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