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DUFFIN–KEMMER–PETIAU THEORY IN THE CAUSAL APPROACH

Instituto de Física Teórica, Universidade Estadual Paulista, Rua Pamplona 145, CEP 01405-900, São Paulo, SP, Brazil

On leave from Universidade Estadual de Ponta Grossa, Setor de Ciências Exatas e Naturais, Departamento de Matemática e Estatística. Ponta Grossa-PR, Brazil.

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B. M. PIMENTEL

Instituto de Física Teórica, Universidade Estadual Paulista, Rua Pamplona 145, CEP 01405-900, São Paulo, SP, Brazil

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J. S. VALVERDE

Instituto de Física Teórica, Universidade Estadual Paulista, Rua Pamplona 145, CEP 01405-900, São Paulo, SP, Brazil

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L. A. MANZONI

Instituto de Física, Universidade de São Paulo, Caixa Postal 66318, CEP 05315-970, São Paulo, SP, Brazil

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https://doi.org/10.1142/S0217751X02005682Cited by:58 (Source: Crossref)

Abstract

In this paper we consider the scalar sector of Duffin–Kemmer–Petiau theory in the framework of Epstein–Glaser causal method. We calculate the lowest order distributions for Compton scattering, vacuum polarization, self-energy and vertex corrections. By requiring gauge invariance of the theory we recover, in a natural way, the scalar propagator of the usual effective theory.