Infra-Red Asymptotic Forms of the Gluon and Quark Propagators

摘要

The infra-red asymptotic forms of the gluon and quark propagators are calculated using an approximation scheme to the Dyson-Schwinger equations, which was first developed in QED by Salam, Delbourgo and West. The power-law factor ( (lambda exp 2 /q exp 2 )sup(b)) appears in the infra-red asymptotic form of the gluon propagator. This factor influences the infra-red asymptotic form of the quark propagator, which has the exponential damping factor exp(-2 Km exp 2 / exp + p exp 2 -m exp 2+ ) at p exp 2 asymptotically equals m exp 2 . (Atomindex citation 14:797874)