Calculating the infrared central charges for perturbed minimal models: improving the RG perturbation
arXiv:hep-th/9905140 · doi:10.1016/S0370-2693(99)00895-3
Abstract
We illustrate a method for improving Renormalisation Group improved perturbation theory by calculating the infrared central charge of a perturbed conformal field theory. The additional input is a dispersion relation that exploits analyticity of the energy-momentum tensor correlator.
9 pages, 3 Postscript figures, uses AMS-LaTeX