Renormalized Field Theory of Quenched System under Gaussian Random Fields Conjugate to Anisotropic Spin Fields
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概要
- 論文の詳細を見る
The effects of Gaussian random fields applied only to the m spin fields of the anisotropic (n+m) -vector model are studied in the quenched case via the renormalized φ^4 field theory by examining the stability of four fixed points and one fixed line in the large n and m limits. Regardless of the value of n/m, only a decoupled case is infrared stable, so that random fields prove to have no effects on the critical properties (e.g., critical indices) of the pure n spin fields. In such a decoupled case, as far as random fields are weak, longitudinal order corresponding to a random fixed point is observed remarkably. However, as the strength of random fields grows stronger, random fixed point moves to a Gaussian (trivial) fixed point and in consequence only transverse order gets conspicuous. The above results are physically consistent with Aharony's arguments.
- 理論物理学刊行会の論文
- 1980-11-25
著者
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Abe Ryuzo
Department Of Emergency And Critical Care Medicine Chiba University Graduate School Of Medicine
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OKU Michiyoshi
Department of Pure and Applied Science, University of Tokyo
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Oku Michiyoshi
Department Of Pure And Applied Science University Of Tokyo
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ABE Ryuzo
Department of Pure and Applied Sciences College of Arts and Sciences, University of Tokyo
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