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Type: Artigo de periódico
Title: Propagating torsion from first principles
Author: Saa, A
Abstract: A propagating torsion model is derived from the requirement of compatibility between minimal action principle and minimal coupling procedure in Riemann-Cartan spacetimes. In the proposed model, the trace of the torsion tensor is derived from a scalar potential that determines the volume element of the spacetime. The equations of the model are written down for the vacuum and for various types of matter fields. Some of their properties are discussed. In particular, we show that gauge fields can interact minimally with the torsion without the breaking of gauge symmetry.
Subject: Einstein-Cartan gravity
Editor: Plenum Publ Corp
Rights: fechado
Identifier DOI: 10.1023/A:1010240011895
Date Issue: 1997
Appears in Collections:Unicamp - Artigos e Outros Documentos

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