Large-scale structure inf(T)gravity

2011/03/14 by Baojiu Li, Thomas P. Sotiriou, John D. Barrow · 14 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph.CO #gr-qc #hep-ph

paper · pdf · doi:10.1103/physrevd.83.104017

published as Phys.Rev.D83:104017,2011 · 13 pages, 3 figures

arxiv created 2011/03/14 · openalex publication_date 2011/05/06 · arxiv updated 2011/11/02 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

In this work we study the cosmology of the general f(T) gravity theory. We express the modified Einstein equations using covariant quantities, and derive the gauge-invariant perturbation equations in covariant form. We consider a specific choice of f(T), designed to explain the observed late-time accelerating cosmic expansion without including an exotic dark energy component. Our numerical solution shows that the extra degree of freedom of such f(T) gravity models generally decays as one goes to smaller scales, and consequently its effects on scales such as galaxies and galaxies clusters are small. But on large scales, this degree of freedom can produce large deviations from the standard \ensuremathΛCDM scenario, leading to severe constraints on the f(T) gravity models as an explanation to the cosmic acceleration.

Cited by

• Transient acceleration inf(T) gravity
• Analytic models of anisotropic strange stars in f ( T ) f(T) gravity with off-diagonal tetrad
• Anisotropic fluid for a set of non-diagonal tetrads in f(T) gravity
• Local Lorentz transformation and exact spherically symmetric vacuum solutions in f(T) gravity theories
• Remnant group of local Lorentz transformations inf(T)theories
• Generalized Noether symmetry in f(T) gravity
• Problems with propagation and time evolution inf(T)gravity
• Locally rotationally symmetric Bianchi type I cosmology in f(R, T) gravity
• Constraining ƒ(R) Gravity by the Large-Scale Structure
• Dynamics of teleparallel dark energy
• Constraining torsion in maximally symmetric (sub)spaces
• ΛCDM model inf(T) gravity: reconstruction, thermodynamics and stability
• Issues of Lorentz-invariance in f ( T ) gravity and calculations for spherically symmetric solutions
• Cosmological dynamics of dark energy in scalar-torsion f(T,φ ) gravity

Related

• The cosmology of f(R, L_m) gravity: constraining the background and perturbed dynamics
• Effect of the modified gravity on the large scale structure formation
• Testing f(T) Gravity with Cosmological Observations: Confronting the Hubble Tension and Implications for the Late-Time Universe
• Study of Accelerated Expansion of Universe in the framework of f (R, T ) Gravity
• Implications of f(R) gravity on late-time cosmic structure growth through a complete description of density perturbations