Critical Behavior of Annealed Random Spin System at n=-2
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概要
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An n-component classical spin system is considered in which each lattice point is occupied by either magnetic or nonmagnetic impurity atom. It is assumed that these atoms are randomly distributed over N lattice points and the impurity concentration N_i/N is denoted by p (N_i: number of impurity atoms). An appropriate analytic continuation in n makes it possible to derive an exact solution at n=-2 for the annealed case. It is shown that critical exponents γ and α take their Gaussian values irrespectively of p. The critical amplitudes for susceptibility and specific heat are also discussed.
- 理論物理学刊行会の論文
- 1977-12-25
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