SYM N=4 in light-cone gauge and the "bridge" identities
arXiv:0705.4414 · doi:10.1103/PhysRevD.77.045001
Abstract
The light-cone gauge allows to single out a set of ``transverse'' fields (TF), whose Green functions are free from UV divergences in SYM N=4. Green functions with external lines involving the remaining fields do instead exhibit divergences: indeed those fields can be expressed, by solving their equations of motion, as composite operators in terms of ``transverse'' fields. A set of exact identities (bridge identities) automatically realize their insertions in a path-integral formulation.
12 pages, LaTeX, uses cernrep, axodraw, cancel; figures included; minor improvements, references added, version accepted for publication in Phys. Rev. D
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