The role of singular spinor fields in a torsional gravity, Lorentz-violating, framework

Autor(es)

Ferrari, A. F. ; Neto, J. A. S. ; da Rocha, R.

• Tipo de documento: Artigo Científico
• Fonte: GENERAL RELATIVITY AND GRAVITATION; v. 49, n. 5 MAY 2017.
• Citações Web of Science: 1

Resumo

In this work, we consider a generalization of quantum electrodynamics including Lorentz violation and torsional-gravity, in the context of general spinor fields as classified in the Lounesto scheme. Singular spinor fields will be shown to be less sensitive to the Lorentz violation, as far as couplings between the spinor bilinear covariants and torsion are regarded. In addition, we prove that flagpole spinor fields do not admit minimal coupling to the torsion. In general, mass dimension four couplings are deeply affected when singular-flagpoles-spinors are considered, instead of the usual Dirac spinors. We also construct a mapping between spinors in the covariant framework and spinors in Lorentz symmetry breaking scenarios, showing how one may transliterate spinors of different classes between the two cases. Specific examples concerning the mapping of Dirac spinor fields in Lorentz violating scenarios into flagpole and flag-dipole spinors with full Lorentz invariance (including the cases of Weyl and Majorana spinors) are worked out. (AU)

• Processo FAPESP: 13/22079-8 - Física de partículas e campos: modelo padrão e suas extensões
• Beneficiário: Adriano Antonio Natale
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 15/10270-0 - Correspondência fluido / gravidade e aplicações
• Beneficiário: Roldão da Rocha
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 14/24672-0 - Simetrias e a física além do modelo padrão
• Beneficiário: Alysson Fábio Ferrari
• Modalidade de apoio: Auxílio à Pesquisa - Regular