Orateur
Description
The spin-1 particles is an admirable two quarks bound state
system to understand electromagnetic properties from hadronic states.
These systems are generally relativistic, and therefore,
need an approach using quantum field theory. In the present work, we will use both the
quantum field theory at the instant form, as well,
quantum field theory on the light-front~(LFQFT).
In general, it is used to calculate the electromagnetic properties of
spin-1 vector particles in the LFQFT formalism, with the plus
component of the electromagnetic current. In the present work, we used, in addition to
the plus component of the electromagnetic current; the minus component
of the current, and we use that
components o the current, to extract the covariant form factors; showing that
to have an equivalence between these we need to add non-valence terms
to the electromagnetic current, in order to restore the covariance, and obtain
exactly the same results when using the instant form quantum field theory.
