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Radiative corrections for the gauged Thirring model in causal perturbation theory

  • L.A. Manzoni
  • B.M. Pimentel
  • J.L. Tomazelli
Theoretical physics

Abstract.

We evaluate the one-loop fermion self-energy for the gauged Thirring model in (2+1) dimensions, with one massive fermion flavor. We do this in the framework of the causal perturbation theory. In contrast to QED\(_3\), the corresponding two-point function turns out to be infrared finite on the mass shell. Then, by means of a Ward identity, we derive the on-shell vertex correction and discuss the role played by causality for non-renormalizable theories.

Keywords

Perturbation Theory Radiative Correction Ward Identity Massive Fermion Mass Shell 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • L.A. Manzoni
    • 1
  • B.M. Pimentel
    • 1
  • J.L. Tomazelli
    • 2
  1. 1.Instituto de Física Teórica, Universidade Estadual Paulista, Rua Pamplona, 145 01405-900 – São Paulo, S.P. BrazilBR
  2. 2.Departamento de Física e Química - Faculdade de Engenharia, Universidade Estadual Paulista – Campus de Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha, 333 12500-000 – Guaratinguetá, S.P. BrazilBR

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