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Durham University

Department of Mathematical Sciences

Academic Staff

Publication details for Professor Emeritus Paul Mansfield

Kjærgaard, L. & Mansfield, P. (1999). Calculating the infrared central charges for perturbed minimal models: improving the RG perturbation. Physics Letters B 462(1-2): 103-108.

Author(s) from Durham


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.