Abstract
A general momentum-space subtraction procedure is proposed for the removal of both ultraviolet and infrared divergences of Feynman integrals. Convergence theorems are proved which allow one to define time-ordered Green functions, as tempered distributions, for a wide class of theories with zero-mass propagators.
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Communicated by K. Symanzik
Research supported in part by National Science Foundation Grant MPS-74-21778.
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Lowenstein, J.H. Convergence theorems for renormalized Feynman integrals with zero-mass propagators. Commun.Math. Phys. 47, 53–68 (1976). https://doi.org/10.1007/BF01609353
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DOI: https://doi.org/10.1007/BF01609353