Abstract
Abstract Recent work on the liquid-gas critical point by Zhang and Badiali invokes the Callan-Symanzik equation from renormalisation group theory. The relation of this approach to structural theory, based on a form of the three-atom correlation function near the critical point is discussed. Some further knowledge of this function can be gained by invoking the ∊ = 4 – D expansion, where D is the dimensionality.
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