Reggeon Field Theory at D = 2 in Two-Loop Approximation

摘要

A general method of constructing an explicit representation is developed for the pomeron propagator in the presence of additional parameters, such as the pomeron production threshold xi sub 0 , momentum transfer K vector or the intercept shift delta sub 0 . The method is shown to be applicable in both one-loop and two-loop approximations. The obtained general formulae allow to consider the pomeron propagator in both asymptotic region and the region of the perturbation theory applicability. Besides, they provide the smooth matching of both these regions. The observed values are calculated, and the results connected with asymptotically high energies are discussed. (Atomindex citation 14:773108)