Momentum-independent renormalization of the Schwinger-Dyson equation with an instantaneous-interaction kernel

Klabučar, Dubravko and Horvat, Raul and Kekez, Dalibor and Palle, Davor (1994) Momentum-independent renormalization of the Schwinger-Dyson equation with an instantaneous-interaction kernel. Fizika B, 3 (3). pp. 187-196. ISSN 1330-0016

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Abstract

We consider the problem of renormalization of the Schwinger-Dyson equation, encountered when the interquark interaction kernel is modeled by an instantaneous potential. More precisely, the Coulomb potential, needed for describing the short-distance part of the gluon exchange, leads to ultraviolet divergences in the Schwinger-Dyson equation. The standard prescription which has been used up till now to subtract these divergences, suffers from a serious conceptual problem: it is not momentum independent. In this work we propose a new and momentum-independent renormalization prescription, and take special care to preserve the correct chiral limit for light pseudoscalar mesons.

Item Type: Article
Date: 1994
Subjects: NATURAL SCIENCES > Physics
Divisions: Faculty of Science > Department of Physics
Publisher: Hrvatsko fizikalno društvo
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 08 Mar 2014 22:06
Last Modified: 08 Mar 2014 22:06
URI: http://digre.pmf.unizg.hr/id/eprint/538

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