Titlebook: Applied Asymptotic Expansions in Momenta and Masses; Vladimir A. Smirnov Book 2002 Springer-Verlag Berlin Heidelberg 2002 Feynman diagrams

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0081-3869 It turns out that knowledge of the structure of the asymptotic expansion at the diagrammatic level is a key point in understanding how to perform expansions at the operator level. There are var978-3-642-07612-1978-3-540-44574-6Series ISSN 0081-3869 Series E-ISSN 1615-0430

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Analysis of Natural Gas Value Chainsnt, and the other two external legs correspond to the external quarks. If we are interested in the total cross-section for the production of the quarks the problem reduces to the evaluation of the imaginary part of diagrams contributing to the vacuum polarization and containing only two external ver

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Analysis of Natural Gas Value Chainsntary-particle physics. In this book, it is explained how this problem is solved. To characterize, briefly, the main steps of the solution let us consider, for example, the process of . . . . annihilation, where an incoming electron and positron produce, according to the quantum-theoretical descript

Intellectual

Susanna Horn,Angelina Korsunovaed. Special attention is paid to various divergences of Feynman integrals because their interplay is a characteristic feature of explicit prescriptions for asymptotic expansions in momenta and masses. A brief review of methods for analytic evaluation of Feynman integrals is presented. In addition to

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Trends in EU Energy Policy 1995–2007 off-shell large-momentum limit, i.e. when all the large momenta are large in the Euclidean sense and there are no large masses. We have already seen an example of a one-loop diagram in this limit in Chap. 3. After investigating two more one-loop examples in Sect. 4.1 we formulate, in Sect. 4.2, gen

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Studies in Human Ecology and Adaptationmomentum expansion, so that we apply the method of expansion by subgraphs again here. We start with a one-loop example and then formulate general prescriptions. These prescriptions are given by the same formula (4.34) as for the off-shell large-momentum limit, with a suitable change of the class of