Renormalization in spherical field theory
arXiv:hep-th/9905077 · doi:10.1016/S0370-2693(99)00746-7
Abstract
We derive several results concerning non-perturbative renormalization in the spherical field formalism. Using a small set of local counterterms, we are able to remove all ultraviolet divergences in a manner such that the renormalized theory is finite and translationally invariant. As an explicit example we consider massless phi^4 theory in four dimensions.
16 pages, 5 figures