3 papers
hep-th2000
String-generated quartic scalar interactions
R. Marotta, F. Pezzella
The {\em cutting and sewing} procedure is used for getting two-loop order Feynman diagrams of -theory with an internal SU(N) symmetry group, starting from tachyon amplitudes…
hep-th1996
The field theory limit of multiloop string amplitudes
P. Di Vecchia, L. Magnea, R. Marotta +2
We report on recent progress in the use of string techniques for the computation of field theory amplitudes. We show how one-loop renormalization constants in Yang-Mills theory can…
hep-th1996
Renormalization constants from string theory
Paolo Di Vecchia, Alberto Lerda, Lorenzo Magnea +2
We review some recent results on the calculation of renormalization constants in Yang-Mills theory using open bosonic strings. The technology of string amplitudes, supplemented wit…