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  • Title: Theoretical study of Sutherland fluids with long-range, short-range, and highly short-range potential parameters.
    Author: Mi J, Tang Y, Zhong C.
    Journal: J Chem Phys; 2008 Feb 07; 128(5):054503. PubMed ID: 18266451.
    Abstract:
    On the basis of the first-order mean spherical approximation (FMSA) theory the behavior of Sutherland fluids with a number of parameters (gamma=3.1-36) is investigated. The investigation includes its modification by the simplified exponent approximation, renormalization group (RG) transformation, and density functional theory (DFT). For long-range parameters, the original FMSA is found sufficiently good to describe the global phase behavior, including inside the critical region. For short-range parameters, the modified FMSA by the simplified exponent approximation outside the critical region and RG transform inside the critical region are applied. For extremely short-range forces, the success is achieved by its combination with the DFT. This work gives a general sense about the capability of a theory for different ranges of potential, as well as for different thermodynamic states.
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