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New observational constraints on f(T) gravity from cosmic chronometers

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arxiv 1606.04359 v2 pith:W2MPR54O submitted 2016-06-07 gr-qc astro-ph.COhep-th

classification gr-qcastro-ph.COhep-th
keywords gravitymodelslambdachronometersconstraintscosmiccosmologydeviation
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abstract

We use the local value of the Hubble constant recently measured with 2.4% precision, as well as the latest compilation of cosmic chronometers data, together with standard probes such as Supernovae Type Ia and Baryon Acoustic Oscillation distance measurements, in order to impose constraints on the viable and most used f(T) gravity models, where T is the torsion scalar in teleparallel gravity. In particular, we consider three f(T) models with two parameters, out of which one is independent, and we quantify their deviation from $\Lambda$CDM cosmology through a sole parameter. Our analysis reveals that for one of the models a small but non-zero deviation from $\Lambda$CDM cosmology is slightly favored, while for the other models the best fit is very close to $\Lambda$CDM scenario. Clearly, f(T) gravity is consistent with observations, and it can serve as a candidate for modified gravity.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Is Dark Energy an Effective Manifestation of Non-equilibrium Thermodynamics? -- Insights from DESI

    astro-ph.CO 2025-07 conditional novelty 5.0 of 10

    Two phenomenological dark matter creation rates can reproduce the accelerated expansion of the universe and fit current background data as well as or slightly better than LambdaCDM for some DESI-based data combinations.

  2. Modified gravity/Dynamical Dark Energy vs $\Lambda$CDM: is the game over?

    gr-qc 2024-12 reject novelty 4.0 of 10

    An AIC/χ² comparison of exponential F(R) gravity, wCDM, and CPL models against Pantheon+, DESI DR1, cosmic chronometer, and Planck-compressed data claims ΛCDM is excluded at 4σ, but the significance conversion is not ...

  3. Charged black hole solutions in $f(R,T)$ gravity coupled to nonlinear electrodynamics

    gr-qc 2024-11 conditional novelty 4.0 of 10

    The authors derive a family of charged black hole metrics in f(R,T)=R+βT gravity with Lagrangian L=f0+F+αF^p, show they have curvature singularities at the origin, and use the Sgr A* shadow to place weak upper bounds ...

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