Original scientific paper

Realistic regularization of the QED Green functions

Marijan Ribarić ; Jozef Stefan Institute, p.p. 3000, 1001 Ljubljana, Slovenia
Luka Šušteršić ; Jozef Stefan Institute, p.p. 3000, 1001 Ljubljana, Slovenia

Abstract

Generalizing the 't Hooft and Veltman method of unitary regulators, we demonstrate for the first time the existence of local, Lorentz-invariant, physically motivated Lagrangians of quantum-electrodynamic phenomena such that: (i) Feynman diagrams are finite and equal the diagrams of QED but with regularized propagators. (ii) n-point Green functions are C-, P- and T-invariant up to a phase factor, Lorentz-invariant and causal. (iii) No auxiliary particles or parameters are introduced.

Keywords

quantum-electrodynamic Lagrangians; 't Hooft-Veltman method of unitary regulators; regularized propagators; causal n-point Green functions; S-matrix

Hrčak ID:

303862

URI

https://hrcak.srce.hr/303862

Publication date:

2.5.2001.

Article data in other languages: croatian

Visits: 490 *