Exact solute–solvent and solute–solute correlation functions are obtained for the problem of two solute molecules immersed in a one-dimensional fluid. The features of the indirect solventmediated interaction which emerge confirm the correctness of earlier three-dimensional studies based on a combination of the PY or HNC approximations. The analysis provides a strong hint regarding the origin of observed repulsive forces.
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Chan et al. (1979) studied this question.