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Spatial correlation characteristics of the anomalous density matrix $\kappa$in a slab of nuclear matter with the Paris and Argonne v18 forces arecalculated. A detailed comparison with predictions of the effective Gogny forceis made. It is found that the two realistic forces lead to very close resultswhich are qualitatively similar to those for the Gogny force. At the same time,the magnitude of $\kappa$ for realistic forces is essentially smaller than theone for the Gogny force. The correlation characteristics are practicallyindependent of the magnitude of $\kappa$ and turn out to be quite close for thethree kinds of the force. In particular, all of them predict a small value ofthe local correlation length at the surface of the slab and a big one, inside.These results are in agreement with those obtained recently by Pillet at al.for finite nuclei with the Gogny force.

Spatial correlation properties of the anomalous density matrix in a slab of nuclear matter with realistic NN-forces