3-point off-shell vertex in scalar QED in arbitrary gauge and dimension
classification
✦ hep-th
keywords
vertexarbitrarydimensiongaugeoff-shellscalaranswercalculate
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We calculate the complete one-loop off-shell three-point scalar-photon vertex in arbitrary gauge and dimension for Scalar Quantum Electrodynamics. Explicit results are presented for the particular cases of dimensions 3 and 4 both for massive and massless scalars. We then propose non-perturbative forms of this vertex that coincide with the perturbative answer to order $e^2$.
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