Path-ordered Phase Factors in Scalar Quantum Electrodynamics
B. M. Pimentel, J. L. Tomazelli
Abstract
Starting from linear equations for the complex scalar field, the two- and three-point Green's functions are obtained in the infrared approximation. We show that the infrared singularity factorizes in the vertex function as in spinorial QED, reproducing in a straightforward way the result of lenghty perturbative calculations.
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