Ag. Shuvaev, SOLUTION OF THE BETHE-SALPETER-EQUATION FOR TWIST-4 OPERATORS IN THE DOUBLE LOGARITHMIC APPROXIMATION, Physics of atomic nuclei, 57(2), 1994, pp. 299-311
The solution of the Bethe-Salpeter equation for four-gluon operators i
n the t-channel is obtained in the double logarithmic approximation of
perturbative QCD. The method used to obtain this solution leads to th
e effective theory similar to reggeon field theory.