Critical behavior of a fluid in a disordered porous matrix: An Ornstein-Zernike approach.

  title={Critical behavior of a fluid in a disordered porous matrix: An Ornstein-Zernike approach.},
  author={Pitard and Rosinberg and Stell and Tarjus},
  journal={Physical review letters},
  volume={74 22},
Using a liquid-state approach based on Ornstein-Zernike equations, we study the behavior of a fluid inside a porous disordered matrix near the liquid-gas critical point. The results obtained within various standard approximation schemes such as lowest-order $\ensuremath{\gamma}$ ordering and the mean-spherical approximation suggest that the critical behavior is closely related to that of the random-field Ising model. 
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