Aspects of self-consistency in the Dyson-Schwinger approach to QED and lamda(phi* phi)**2 theories

Abstract

We investigate some aspects of the self-consistency in the Dyson-Schwinger approach to both the QED and the self-interacting scalar field theories. We prove that the set of the Dyson-Schwinger equations, together with the Green-Ward-Takahashi identity, is equivalent to the analogous set of integral equations studied in condensed matter, namely, many-body perturbation theory, where it is solved self-consistently and iteratively. In this framework, we compute the nonperturbative solution of the gap equation for the self-interacting scalar field theory.


Autore Pugliese

Tutti gli autori

  • R. Casalbuoni; M. Ladisa; V. Olevano

Titolo volume/Rivista

Physical review. D, Particles, fields, gravitation, and cosmology


Anno di pubblicazione

2010

ISSN

1550-7998

ISBN

Non Disponibile


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Nessuna citazione

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