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Regularization by $\varepsilon$-metric. II. Limit $\varepsilon = + 0$

In a wide class of propagators regularized by the $\varepsilon$-metric [1], the $R$-operation is formulated. It is proved that the limit of renormalized Feynman integrals exists and is covariant. Possible applications in gravity are discussed. (The paper is an English translation of the second of two articles in Russian published by the author in 1987-88: V.D. Ivashchuk, Regularization by $\varepsilon$-metric. II. Limit $\varepsilon = +0$, Izvestiya Akademii Nauk Moldavskoy SSR, Ser. fiziko-tekhnicheskih i matematicheskih nauk, No. 1, p. 10-20 (1988) [in Russian] .)

preprint2020arXivOpen access
V. D. Ivashchuk
math-phmath.MPgr-qchep-th
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