2003/11/04 by Charles B. Thorn, Thorn, Charles B.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #hep-th
paper · pdf · doi:10.48550/arxiv.hep-th/0311026
11 pages, 2 figures, talk to 27th Johns Hopkins Workshop
arxiv created 2003/11/04 · arxiv updated 2009/12/01
This paper describes my talk given to the 27th Johns Hopkins Workshop: Symmetries and Mysteries of M Theory, Göteborg, Sweden, 24-26 August, 2003. After a brief introduction to the lightcone worldsheet formalism for summing the planar diagrams of field theory, I explain how the \it uv divergences of quantum field theory translate to the new language of string. It is shown through one loop that, at least for scalar cubic vertices, the counter-terms necessary for Poincaré invariance in space-time dimensions D≤ 6 are indeed local on the worldsheet. The extension to cover the case of gauge field vertices will be more complicated due to the extra divergences at p+=0 in lightcone gauge.