How to obtain a covariant Breit type equation from relativistic Constraint Theory

Details How to obtain a covariant Breit type equation from relativistic Constraint Theory How to obtain a covariant Breit type equation from relativistic Constraint Theory

1994-12-08

arxiv.org/abs/hep-ph/9412261v1

J.Phys. G21 (1995) 267-280

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, Latex

Scientific paper

10.1088/0954-3899/21/3/004

It is shown that, by an appropriate modification of the structure of the interaction potential, the Breit equation can be incorporated into a set of two compatible manifestly covariant wave equations, derived from the general rules of Constraint Theory. The complementary equation to the covariant Breit type equation determines the evolution law in the relative time variable. The interaction potential can be systematically calculated in perturbation theory from Feynman diagrams. The normalization condition of the Breit wave function is determined. The wave equation is reduced, for general classes of potential, to a single Pauli-Schr\"odinger type equation. As an application of the covariant Breit type equation, we exhibit massless pseudoscalar bound state solutions, corresponding to a particular class of confining potentials.

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