Guillén-Escamilla, I.; Schöll-Paschinger, E.; … - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 21, pp. 3637-3644
We propose a simple analytical expression of the direct correlation function for the square-shoulder and square-well fluids. Our approximation is based on an ansatz for the direct correlation function of a modified soft-core fluid, whose parameters are adjusted by fitting the data obtained from...