BPHZ renormalization in combinatorially non-local field theory
Basic data for this talk
Type of talk: scientific Talk
Name der Vortragenden: Thürigen, Johannes
Date of talk: 18/05/2021
Talk language: English
Information about the event
Name of the event: Joint Theory Seminar
Event location: ESI Universität Wien & ITP TU Wien
Event website: https://mathphys.univie.ac.at/seminars/
Abstract
Combinatorial non-locality occurs in various field theories such as non-commutative field theory, matrix and tensor theories or the group field theory approach to quantum gravity. Though interactions in such theories are not point-like, they are still local in the sense that for any divergent Feynman diagram there is a unique counter term vertex, described in general by a graph. This allows to generalize the renormalization Hopf algebra of Feynman graphs to a Hopf algebra of 2-graphs which gives a concise algorithm for applying Zimmermann’s forest formula to amplitudes in any renormalizable non-local field theory.Speakers from the University of Münster
| Thürigen, Johannes |
Publications referred to in the talk
Thürigen, J (2021) In: Symmetry, Integrability and Geometry: Methods and Applications, 17, 094. doi:10.3842/SIGMA.2021.094 Research article (journal) | Peer reviewed | Published |