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The critical exponents ν, η and α are derived in powers of 1/n to first order for the n-vector model (or n-component system) with short-range interactions. Scaling relations χ(q)∼ε-γf(q/εν), dν=d-α and γ=ν(2-η) are confirmed up to the order of 1/n.
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Abe et al. (1973) studied this question.
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