Towards realistic $f(T)$ models with nonminimal torsion-matter coupling extension

Abstract

Using the observation data of SNeIa, CMB and BAO, we establish two concrete $f(T)$ models with nonminimal torsion-matter coupling extension. We study in detail the cosmological implication of our models and find they are successful in describing the observation of the Universe, its large scale structure and evolution. In other words, these models do not change the successful aspects of $\Lambda$CDM scenario under the error band of fitting values as describing the evolution history of the Universe including radiation-dominated era, matter-dominated era and the present accelerating expansion. Meanwhile, the significant advantage of these models is that they could avoid the cosmological constant problem of $\Lambda$CDM. A joint analysis is performed by using the data of CMB+BAO+JLA, which leads to ${\Omega }_{m0}=0.255\pm 0.010,{\Omega }_{b0}{h}^2=0.0221\pm 0.0003$ and $H_0=68.54\pm 1.27$ for model I and ${\Omega }_{m0}=0.306\pm 0.010,{\Omega }_{b0}{h}^2=0.0225\pm 0.0003$ and $H_0=60.97\pm 0.44$ for model II at 1$\sigma$ confidence level. The evolution of the decelaration parameter $q(a)$ and the effective equation of state $w_{DE}(a)$ are displayed. Furthermore, The resulted age of the Universe from our models is consistent with the ages of the oldest globular clusters. As for the fate of the Universe, model I results in a de Sitter accelerating phase while model II appears a power-law one, even though $w_{DE0}<-1$ makes model I look like a phantom at present time.

12 pages, 5 figures

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Cited by in corpus (10)

• Teleparallel Gravity: From Theory to Cosmology
• Coupling matter in modified $Q$-gravity
• Bounce inflation in $f(T)$ Cosmology: A unified inflaton-quintessence field
• Non-minimal Coupling of Torsion-matter Satisfying Null Energy Condition for Wormhole Solutions
• Viscous cosmology in $f(T)$ gravity
• Solar system tests for realistic $f(T)$ models with nonminimal torsion-matter coupling
• Spherical collapse and virialization in $f(T)$ gravities
• Action functional of the Cardassian universe
• Solar System Tests of a New Class of $f(z)$ Theory
• Constraining nonminimal f(T) gravity from Primordial Nucleosynthesis to Late-Universe observations