Abstract
We develop here the general treatment of the Bethe—Salpeter equation for the bound state of two spin-l particles interacting through an electromagnetic interaction. The treatment here, which can be generalized to strong interactions, combines the two-component approach utilized previously by the author in conjunction with spontaneous symmetry breaking. This is done by using a Lagrangian having SU(2)×U(1) symmetry (without fermions) and then choosing the ′t Hooft gauge. In this way, a renormalizable theory for the interaction of two spin-l particles via an electromagnetic interaction is ensured.
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Owen, D.A. The Bethe-Salpeter equation for spin-1 particles. Found Phys 27, 57–66 (1997). https://doi.org/10.1007/BF02550155
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DOI: https://doi.org/10.1007/BF02550155