Infrared behavior in two dimensions

Publisher Website
Google Scholar
Abstract
Infrared behavior of the photon Green's function is analyzed and it is shown that two-dimensional quantum electrodynamics is free from severe infrared divergences only in the case of a massless electron. The results of the perturbative approach as well as Wilson's scale invariance are analyzed by means of the renormalization-group method while the massless-electron model is studied as a special case.