Generalized tachyonic teleparallel cosmology

In this paper we propose a new dark energy model in the teleparallel alternative of general relativity, by considering a generalized non-minimal coupling of a tachyonic scalar field with the teleparallel boundary term. Within the framework of teleparallel gravity, the boundary coupling term is assoc...

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Published in:The European physical journal. C, Particles and fields Particles and fields, 2019-04, Vol.79 (4), p.1-10, Article 324
Main Authors: Bahamonde, Sebastian, Marciu, Mihai, Levi Said, Jackson
Format: Article
Language:English
Subjects:
Analysis
Astronomy
Astrophysics and Cosmology
Cosmology
Couplings
Critical point
Dark energy
Divergence
Dynamic stability
Elementary Particles
Energy (Physics)
Hadrons
Heavy Ions
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
Potential energy
Quantum Field Theories
Quantum Field Theory
Regular Article - Theoretical Physics
Relativity
Stability analysis
String Theory
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description In this paper we propose a new dark energy model in the teleparallel alternative of general relativity, by considering a generalized non-minimal coupling of a tachyonic scalar field with the teleparallel boundary term. Within the framework of teleparallel gravity, the boundary coupling term is associated with the divergence of the torsion vector. Considering the linear stability technique for various potentials and couplings, we have analyzed the dynamical properties of the present tachyonic dark energy model in the phase space, uncovering the corresponding essential dynamical features. Our study of the phase space structure revealed that for a specific class of potential energy, this model exhibits various critical points which are related to different cosmological behaviors, such as accelerated expansion and scaling solutions, determining the existence conditions and the corresponding physical features.
doi_str_mv 10.1140/epjc/s10052-019-6833-1
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subjects Analysis
Astronomy
Astrophysics and Cosmology
Cosmology
Couplings
Critical point
Dark energy
Divergence
Dynamic stability
Elementary Particles
Energy (Physics)
Hadrons
Heavy Ions
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Physics
Physics and Astronomy
Potential energy
Quantum Field Theories
Quantum Field Theory
Regular Article - Theoretical Physics
Relativity
Stability analysis
String Theory
title Generalized tachyonic teleparallel cosmology
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