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Hole-Hole Contact Interaction in the t-J Model

A. L. Chernyshev·A. V. Dotsenko·O. P. Sushkov
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Abstract

Using an analytical variational approach we calculate the hole-hole contact interaction on the Néel background. Solution of the Bethe-Salpeter equation with this interaction gives bound states in $d$- and p-waves with binding energies close to those obtained by numerical methods. At $t/J \ge 2-3$ the bound state disappears. In conclusion we discuss the relation between short range and long range interactions and analogy with the problem of pion condensation in nuclear matter.

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A. L. Chernyshev, A. V. Dotsenko, O. P. Sushkov. 1993-10-04. Hole-Hole Contact Interaction in the t-J Model. https://doi.org/10.1103/physrevb.49.6197

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