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    Consistency of Capillary Wave Theory in Three Dimensions: Divergence of the Interface Width and Agreement with Density Functional Theory

Consistency of Capillary Wave Theory in Three Dimensions: Divergence of the Interface Width and Agreement with Density Functional Theory

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We compare the predictions of the capillary wave model for fluid interfaces with known exact expressions, due to Triezenberg, Zwanzig, and Wertheim, that relate the surface tension to the interfacial structure, and find agreement in all dimensions. It is shown that contrary to the case d