2 papers
hep-th2021
Original study of the theory. Analysis of all orders in and resummations
Vincenzo Branchina, Alberto Chiavetta, Filippo Contino
In a recent work the Green's functions of the -symmetric scalar theory were calculated at the first order of the logarithmic expansion, i.e. at first…
hep-th2020
Non-linear and weak-coupling expansion in Quantum Field Theory
Vincenzo Branchina, Alberto Chiavetta, Filippo Contino
A formal expansion for the Green's functions of an interacting quantum field theory in a parameter that somehow encodes its "distance" from the corresponding non-interacting one wa…