Non-Riemannian geometry, Born–Infeld models and trace free gravitational equations

Non-Riemannian generalization of the standard Born–Infeld (BI) Lagrangian is introduced and analyzed from a theory of gravitation with dynamical torsion field. The field equations derived from the proposed action lead to a trace free gravitational equation (non-Riemannian analog to the trace free eq...

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Autor principal: Cirilo-Lombardo, D.J.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_22144048_v16_n_p1_CiriloLombardo
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_22144048_v16_n_p1_CiriloLombardo2023-10-03T16:40:39Z Non-Riemannian geometry, Born–Infeld models and trace free gravitational equations Cirilo-Lombardo, D.J. Non-Riemannian generalization of the standard Born–Infeld (BI) Lagrangian is introduced and analyzed from a theory of gravitation with dynamical torsion field. The field equations derived from the proposed action lead to a trace free gravitational equation (non-Riemannian analog to the trace free equation (TFE) from Finkelstein et al., 2001; Ellis et al., 2011; Ellis, 2014) and the field equations for the torsion respectively. In this theoretical context, the fundamental constants arise all from the same geometry through geometrical invariant quantities (as from the curvature R). New results involving generation of primordial magnetic fields and the link with leptogenesis and baryogenesis are presented and possible explanations given. The physically admissible matter fields can be introduced in the model via the torsion vector hμ. Such fields include some dark matter candidates such as axion, right neutrinos and Majorana and moreover, physical observables as vorticity can be included in the same way. From a new wormhole solution in a cosmological spacetime with torsion we also show that the primordial cosmic magnetic fields can originate from hμ with the axion field (that is contained in hμ) the responsible to control the dynamics and stability of the cosmic magnetic field but not the magnetogenesis itself. As we pointed out before (Cirilo-Lombardo, 2017), the analysis of Grand Unified Theories (GUT) in the context of this model indicates that the group manifold candidates are based in SO(10), SU(5) or some exceptional groups as E(6), E(7), etc. © 2017 Elsevier B.V. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_22144048_v16_n_p1_CiriloLombardo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description Non-Riemannian generalization of the standard Born–Infeld (BI) Lagrangian is introduced and analyzed from a theory of gravitation with dynamical torsion field. The field equations derived from the proposed action lead to a trace free gravitational equation (non-Riemannian analog to the trace free equation (TFE) from Finkelstein et al., 2001; Ellis et al., 2011; Ellis, 2014) and the field equations for the torsion respectively. In this theoretical context, the fundamental constants arise all from the same geometry through geometrical invariant quantities (as from the curvature R). New results involving generation of primordial magnetic fields and the link with leptogenesis and baryogenesis are presented and possible explanations given. The physically admissible matter fields can be introduced in the model via the torsion vector hμ. Such fields include some dark matter candidates such as axion, right neutrinos and Majorana and moreover, physical observables as vorticity can be included in the same way. From a new wormhole solution in a cosmological spacetime with torsion we also show that the primordial cosmic magnetic fields can originate from hμ with the axion field (that is contained in hμ) the responsible to control the dynamics and stability of the cosmic magnetic field but not the magnetogenesis itself. As we pointed out before (Cirilo-Lombardo, 2017), the analysis of Grand Unified Theories (GUT) in the context of this model indicates that the group manifold candidates are based in SO(10), SU(5) or some exceptional groups as E(6), E(7), etc. © 2017 Elsevier B.V.
format JOUR
author Cirilo-Lombardo, D.J.
spellingShingle Cirilo-Lombardo, D.J.
Non-Riemannian geometry, Born–Infeld models and trace free gravitational equations
author_facet Cirilo-Lombardo, D.J.
author_sort Cirilo-Lombardo, D.J.
title Non-Riemannian geometry, Born–Infeld models and trace free gravitational equations
title_short Non-Riemannian geometry, Born–Infeld models and trace free gravitational equations
title_full Non-Riemannian geometry, Born–Infeld models and trace free gravitational equations
title_fullStr Non-Riemannian geometry, Born–Infeld models and trace free gravitational equations
title_full_unstemmed Non-Riemannian geometry, Born–Infeld models and trace free gravitational equations
title_sort non-riemannian geometry, born–infeld models and trace free gravitational equations
url http://hdl.handle.net/20.500.12110/paper_22144048_v16_n_p1_CiriloLombardo
work_keys_str_mv AT cirilolombardodj nonriemanniangeometryborninfeldmodelsandtracefreegravitationalequations
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