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Название: The correlation function in Wilson's theory of phase transitions: Above and below the transition
Авторы: Daniel J. Amit, A. Shcherbakov
The correlation function and the correlation length are discussed in the theoretical framework of the Wilson-Feynman diagram expansion for small 4–d. It is shown explicitly that to order 2 the scaling relation is satisfied and that the correlation function is a homogeneous function ofk and . The explicit form of the scaled correlation function is exhibited.