Renormalization in Minkowski space-time

Autor: I. Steib, Janos Polonyi, Sándor Nagy
Přispěvatelé: Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Int.J.Mod.Phys.A
Int.J.Mod.Phys.A, 2021, 36 (05), pp.2150031. ⟨10.1142/S0217751X21500317⟩
DOI: 10.1142/S0217751X21500317⟩
Popis: The multiplicative and the functional renormalization group methods are applied for the four dimensional scalar theory in Minkowski space-time. It is argued that the appropriate choice of the subtraction point is more important in Minkowski than in Euclidean space-time. The parameters of the cutoff theory, defined by a subtraction point in the quasi-particle domain, are complex due to the mass-shell contributions and the renormalization group flow becomes much more involved than its Euclidean counterpart.
Comment: 25 pages, 5 figures
Databáze: OpenAIRE
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