Higher order terms in the contraction of SO(3,2)

Details Higher order terms in the contraction of SO(3,2) Higher order terms in the contraction of SO(3,2)

2003-04-15

arxiv.org/abs/hep-th/0304137v1

Physics

High Energy Physics

High Energy Physics - Theory

Scientific paper

The contraction of a spin-1/2 representation of the de Sitter group SO(3,2) yields a translation operator that consists of the usual momentum operator plus a second order term, the "momentum spin" as described by F. Guersey. The contribution of momentum spin to the kinematics of a multiparticle system in a tangential space of anti de Sitter space is analyzed. It is shown that it can be described by a perturbation term with the structure of the interaction term of quantum electrodynamics. An evaluation of the corresponding coupling constant reproduces Wyler's heuristic formula for the electromagnetic coupling constant.

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