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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Ferrari, A. F. ; Neto, J. A. S. ; da Rocha, R.
Total Authors: 3
Document type: Journal article
Source: GENERAL RELATIVITY AND GRAVITATION; v. 49, n. 5 MAY 2017.
Web of Science Citations: 1
Abstract

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)

FAPESP's process: 13/22079-8 - Physics of particles and fields: standard model and its extensions
Grantee:Adriano Antonio Natale
Support type: Research Projects - Thematic Grants
FAPESP's process: 15/10270-0 - Fluid / gravity correspondence and applications
Grantee:Roldão da Rocha Junior
Support type: Regular Research Grants
FAPESP's process: 14/24672-0 - Symmetries and physics beyond the standard model
Grantee:Alysson Fábio Ferrari
Support type: Regular Research Grants