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Light-front projections of the Bethe-Salpeter amplitude and the 4D electromagnetic current for an interacting two-fermion system

A recent approach for constructing an exact 3D reduction of the 4D matrix elements of the electromagnetic current for an interacting two-fermion system, is briefly reviewed. The properties of the obtained 3D current, like the fulfillment of the Ward-Takashi Identity and its Fock decomposition, will be illustrated in relation with future applications to few-nucleon systems.

preprint2010arXivOpen access
T. FredericoJ. A. O. MarinhoE. PaceG. Salmé
hep-ph
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Open access4 authors1 topic
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T. FredericoJ. A. O. MarinhoE. PaceG. Salmé

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