The strong effect of three-center interactions on the formation of superconductivity with $$d{x^2-y^2}$$ symmetry in the t-J* model

Abstract

The effect of three-center interactions on the formation of a superconducting phase with $$d{x^2-y^2} $$ symmetry is considered using the diagram technique for Hubbard operators and irreducible Green’s functions. It is shown that these interactions lead to a decrease in T c by a factor of several tens.