On the Exponentiation of Infrared Logarithms in Massless (φ3)6-theory
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We investigate the relation between the coefficients of the perturbative series for the propagator in massless theories and the coefficients of the perturbative series of the renormalization group quantities. This enable us to prove, that the concept of exponentiation in the sense introduced by POGGIO is valid in massless theories to arbitrary high order at the leading log level, but breaks down if nonleading log's are included.
Uber die Exponentiation der Infrarot-Logarithmen in der masselosen (φ3)6-Theorie
Wir untersuchen die Beziehung der Koeffizienten der storungstheoretischen Reihe fur den Propagator in masselosen Theorien zu den Entwicklungskoeffizienten der Renormierungsgruppengrosen nach der Kopplungskonstante. Das erlaubt uns zu zeigen, das das Konzept der Exponentiation, wie es von POGGIO eingefuhrt wurde, in masselosen Theorien fur die dominanten Logarithmen in jeder Ordnung der Storungstheorie gultig, aber bei der Einbeziehung der nichtdominanten Logarithmen nicht mehr anwendbar ist.
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