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Classification of quantum spinor fields according to quantum bilinear covariants is introduced in a context of quantum Clifford algebras on Minkowski spacetime. Once the bilinear covariants are expressed in terms of algebraic spinor fields,…

Mathematical Physics · Physics 2014-10-03 Rafal Ablamowicz , Icaro Gonçalves , Roldao da Rocha

The Lounesto classification is a well-established scheme for categorizing spinors based on their physical content, which are determined by their associated bilinear forms. It consists of six disjoint classes encompassing the known spinors…

Mathematical Physics · Physics 2025-02-28 R. J. Bueno Rogerio , R. T. Cavalcanti , C. H. Coronado Villalobos , J. M. Hoff da Silva

Lounesto's classification of spinors is a comprehensive and exhaustive algorithm that, based on the bilinears covariants, discloses the possibility of a large variety of spinors, comprising regular and singular spinors and their unexpected…

High Energy Physics - Theory · Physics 2018-02-28 L. Bonora , J. M. Hoff da Silva , R. da Rocha

The classification of emergent spinor fields according to modified bilinear covariants is scrutinized, in spacetimes with nontrivial topology, which induce inequivalent spin structures. Extended Clifford algebras, constructed by equipping…

High Energy Physics - Theory · Physics 2024-05-09 J. M. Hoff da Silva , R. da Rocha

This work has as the main aim to explore the nature of the fermionic fields, through a classification of spinor fields about physical space of interest, such as the bulk and the compactified space $S^7$ from the supergravity theories. This…

High Energy Physics - Theory · Physics 2017-06-20 K. P. S. de Brito

The Lounesto spinor classification is an important tool in fundamental physics, because it makes explicit the pleiade of spinors types, beyond the used in quantum field theory (QFT). In this work, we show how the classification emerges in…

Mathematical Physics · Physics 2017-03-13 J. A. Silva Neto

In the present communication we employ a split programme applied to spinors belonging to the regular and singular sectors of the Lounesto's classification, looking towards to unveil how it can be built or defined upon two spinors…

Mathematical Physics · Physics 2020-04-03 R. J. Bueno Rogerio

This paper deals with the classification of spinor fields according to the bilinear covariants in 7 dimensions. The previously investigated Riemannian case is characterized by either one spinor field class, in the real case of Majorana…

High Energy Physics - Theory · Physics 2016-01-26 L. Bonora , Roldao da Rocha

A review about spinor fields is presented, constructing a outlook through the last century. Spinor was explored in many contexts more and more in the last decades. Besides this, more papers about this issue has been produced in the last…

General Relativity and Quantum Cosmology · Physics 2017-08-23 K. P. S. de Brito

A classification of spinor fields according to the associated bilinear covariants is constructed in arbitrary dimensions and metric signatures, generalizing Lounesto's 4D spinor field classification. In such a generalized classification a…

High Energy Physics - Theory · Physics 2015-02-17 L. Bonora , K. P. S. de Brito , Roldao da Rocha

Dirac linear spinor fields were obtained from non-linear Heisenberg spinors, in the literature. Here we extend that idea by considering not only Dirac spinor fields but spinor fields in any of the Lounesto's classes. When one starts…

High Energy Physics - Theory · Physics 2019-03-25 Marcos R. A. Arcodía , Mauricio Bellini , Roldao da Rocha

Extending the investigations about the theory of duals, we analyze duals built up with the aid of discrete symmetry operators. We scrutinize algebraic and physical constraints (encompassing them in a theoretical scope) in order to verify…

High Energy Physics - Theory · Physics 2022-10-05 J. M. Hoff da Silva , R. J. Bueno Rogerio , N. C. R. Quinquiolo

Spinor fields on 5-dimensional Lorentzian manifolds are classified, according to the geometric Fierz identities that involve their bilinear covariants. Based upon this classification that generalises the celebrated 4-dimensional Lounesto…

High Energy Physics - Theory · Physics 2016-09-22 K. P. S. de Brito , Roldao da Rocha

In the Lounesto classification, there are three types of regular spinors. They are classified by the condition that at least one of the scalar or pseudo scalar norms are non-vanishing. The Dirac spinors are regular spinors because their…

High Energy Physics - Theory · Physics 2024-11-15 Cheng-Yang Lee

A spinor fields classification with non-Abelian gauge symmetries is introduced, generalizing the the U(1) gauge symmetries-based Lounesto's classification. Here, a more general classification, contrary to the Lounesto's one, encompasses…

High Energy Physics - Theory · Physics 2018-03-28 Luca Fabbri , Roldao da Rocha

We investigate the constraint equations of the Lounesto spinor fields classification and show that it can be used to completely characterize all the singular classes, which are potential accommodations for further mass dimension one…

High Energy Physics - Theory · Physics 2014-10-17 R. T. Cavalcanti

We investigate using Clifford algebra methods the theory of algebraic dotted and undotted spinor fields over a Lorentzian spacetime and their realizations as matrix spinor fields, which are the usual dotted and undotted two component spinor…

Mathematical Physics · Physics 2014-11-18 E. Capelas de Oliveira , Waldyr A. Rodrigues

In this paper we advance into a generalized spinor classification, based on the so-called Lounesto's classification. The program developed here is based on an existing freedom on the spinorial dual structures definition, which, in a certain…

High Energy Physics - Theory · Physics 2020-03-12 C. H. Coronado Villalobos , R. J. Bueno Rogerio , A. R. Aguirre , D. Beghetto

In this paper we approach the issue of Clifford algebra basis deformation, allowing for bilinear covariants associated to Elko spinors which satisfy the Fierz-Pauli-Kofink identities. We present a complete analysis of covariance, taking…

High Energy Physics - Theory · Physics 2016-11-11 J. M. Hoff da Silva , C. H. Coronado Villalobos , R. J. Bueno Rogerio , E. Scatena

A systematic study of the spinor representation by means of the fermionic physical space is accomplished and implemented. The spinor representation space is shown to be constrained by the Fierz-Pauli-Kofink identities among the spinor…

Mathematical Physics · Physics 2017-09-13 J. M. Hoff da Silva , C. H. Coronado Villalobos , R. J. Bueno Rogerio , Roldão da Rocha
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