Abstract
A field-theoretic description of phase transformations in complex systems with two interacting order parameters is given. For three-dimensional systems in the two-loop approximation a renormalization-group analysis of the scaling functions is carried out directly, and the fixed points corresponding to stability of the bicritical and tetracritical behavior are identified. The critical exponents at the multicritical points in the two-loop approximation are calculated with the use of the Padé-Borel summation technique.
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Pis'ma Zh. Éksp. Teor. Fiz. 68, No. 12, 900–905 (25 December 1998)
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Prudnikov, V.V., Prudnikov, P.V. & Fedorenko, A.A. Field-theoretic description of the multicritical behavior of systems with two order parameters. Jetp Lett. 68, 950–956 (1998). https://doi.org/10.1134/1.567959
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DOI: https://doi.org/10.1134/1.567959