The two-fermion vector potential of constraint theory from Feynman diagrams
نویسندگان
چکیده
منابع مشابه
The two-fermion vector potential of constraint theory from Feynman diagrams
The relativistic fermion-antifermion bound state vector potential of constraint theory is calculated, in perturbation theory, by means of the Lippmann−Schwinger type equation that relates it to the scattering amplitude. Leading contributions of n-photon exchange diagrams are calculated in an approximation scheme that adapts eikonal approximation to the bound state problem. They produce terms pr...
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The relativistic two-body potentials of constraint theory for systems composed of two spin-0 or two spin2 particles are calculated, in perturbation theory, by means of the Lippmann−Schwinger type equation that relates them to the scattering amplitude. The cases of scalar and vector interactions with massless photons are considered. The twophoton exchange contributions, calculated with covariant...
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The relativistic two-body potentials of constraint theory for systems composed of two spin-0 or two spin2 particles are calculated, in perturbation theory, by means of the Lippmann−Schwinger type equation that relates them to the scattering amplitude. The cases of scalar and vector interactions with massless photons are considered. The twophoton exchange contributions, calculated with covariant...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1996
ISSN: 0370-2693
DOI: 10.1016/0370-2693(95)01388-1