Tachyonic Teleparallel Dark Energy

Abstract

Teleparallel gravity is an equivalent formulation of general relativity in which instead of the Ricci scalar $R$, one uses the torsion scalar $T$ for the Lagrangian density. Recently teleparallel dark energy has been proposed by Geng et al. in (Geng et al., 2011). They have added quintessence scalar field, allowing also a non-minimal coupling with gravity in the Lagrangian of teleparallel gravity and found that such a non-minimally coupled quintessence theory has a richer structure than the same one in the frame work of general relativity. In the present work we are interested in tachyonic teleparallel dark energy in which scalar field is responsible for dark energy in the frame work of torsion gravity. We find that such a non-minimally coupled tachyon gravity can realize the crossing of the phantom divide line for the effective equation of state. Using the numerical calculations we display such a behavior of the model explicitly.

12 pages, 4 figures, accepted for publication in Astrophysics and Space Science

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Cited by in corpus (35)

• f(T) teleparallel gravity and cosmology
• Teleparallel Gravity: From Theory to Cosmology
• Teleparallel Theories of Gravity: Illuminating a Fully Invariant Approach
• Viable f(T) models are practically indistinguishable from LCDM
• New Schwarzschild-like solutions in f(T) gravity through Noether symmetries
• Noether symmetries and analytical solutions in f(T)-cosmology: A complete study
• Covariant formulation of scalar-torsion gravity
• New observational constraints on f(T) gravity from cosmic chronometers
• Cosmological dynamics of tachyonic teleparallel dark energy
• Scalar Tensor Teleparallel Dark Gravity via Noether Symmetry
• A Built-in Inflation in the $f(T)$-Cosmology
• Phase Portraits of general f(T) Cosmology
• FRW in quadratic form of $f(T)$ gravitational theories
• Generalized Noether symmetry in f(T) gravity
• Dynamical system analysis for nonminimal torsion-matter coupled gravity
• General relativity as an attractor for scalar-torsion cosmology
• Teleparallel dark energy model with a fermionic field via Noether symmetry
• Singularity Problem in Teleparallel Dark Energy Models
• A novel teleparallel dark energy model
• Geodesic Deviation Equation in $f(T)$ gravity
• Notes on teleparallel cosmology with nonminimally coupled scalar field
• Higgs inflation and teleparallel gravity
• Tachyon Inflation in Teleparallel Gravity
• Post-Newtonian Approximation of Teleparallel Gravity Coupled with a Scalar Field
• Planar Symmetry in f(T) gravity
• Scalar-Tensor Teleparallel Gravity With Boundary Term by Noether Symmetries
• Generalized Tachyonic Teleparallel cosmology
• Inflation with teleparallelism: Can torsion generate primordial fluctuations without local Lorentz symmetry?
• Evaporation phenomena in f(T) gravity
• Interacting Quintessence in a New Scalar-Torsion Gravity
• Tachyonic cosmology with cubic contractions of the Riemann tensor
• Non-minimally Coupled Tachyon Field in Teleparallel Gravity
• Dynamics of Mixed Dark Energy Domination in Teleparallel Gravity and Phase-Space Analysis
• Teleparallel Gravity and Quintessence: The Role of Nonminimal Boundary Couplings
• Coupling q-deformed dark energy to dark matter