Original scientific paper

Framework for finite alternative theories to a quantum field theory. II - Unitarity

Marijan Ribarič ; Jozef Stefan Institute, p.p. 3000, 1001 Ljubljana, Slovenia
Luka Šušteršič ; Jozef Stefan Institute, p.p. 3000, 1001 Ljubljana, Slovenia

Abstract

We generalized the 't Hooft-Veltman method of unitary regulators to put forward a path-integral framework for finite, alternative theories to a given quantum field theory. We demonstrated that the proposed framework is feasible by providing a finite alternative to the quantum field theory of a single, self-interacting real scalar field. Here we give two properties of self-energy that make the corresponding scattering matrix unitary. We show that the perturbative self-energy has these two properties at least up to the second order in the coupling constant.

Keywords

path-integral framework; finite alternative theories to quantum field theory; generalized the 't Hooft-Veltman method; self-interacting real scalar field; self-energy

Hrčak ID:

305230

URI

https://hrcak.srce.hr/305230

Publication date:

2.11.2003.

Article data in other languages: croatian

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