Power counting and regularization through loop integrations for multiple Feynman integrals in Minkowski space |
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Authors: | Edward B. Manoukian |
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Affiliation: | (1) Department of National Defence, Royal Military College of Canada, K7L 2W3 Kingston, Ontario, Canada |
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Abstract: | A regularization procedure with a regularization parameter is developed which may be applied to multiple Feynman integrals in Minkowski space. The regularization is carried out inmomentum space and provides a rigorous method for studying Feynman integrals as multiple integrals in real variable theory. The regularized integrals are defined by changing the measure of integration idxi to i(1+xi2)–/2dxi, >0, with a corresponding change defined inMinkowski space. We then develop a power counting convergence criterion for the absolute convergence of the integrals in terms of the parameter as a function of the so-called power asymptotic coefficients of Feynman integrands. An application to quantum electrodynamics is carried out.Work supported by the Department of National Defence Award under CRAD No. 3610-637:F4122. |
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