2019/08/29 by I. Steib, S. Nagy, Steib, I. +5 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Noncommutative and Quantum Gravity Theories #Quantum and Classical Electrodynamics #Relativity and Gravitational Theory #hep-th
paper · pdf · doi:10.48550/arxiv.1908.11311
25 pages, 5 figures
openalex publication_date 2019/08/29 · arxiv created 2020/11/21 · arxiv updated 2020/11/24 · openalex created_date 2021/02/01 · openalex updated_date 2026/07/28
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.