Observational Constraints on $f(T)$ Gravity from Model-Independent Data

F. B. M. dos Santos; J. E. Gonzalez; R. SIlva

Observational Constraints on $f(T)$ Gravity from Model-Independent Data

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arxiv 2112.15249 v1 pith:IJIWCGMZ submitted 2021-12-31 astro-ph.CO

F. B. M. dos Santos , J. E. Gonzalez , R. Silva This is my paper · ORCID

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abstract

We establish new constraints on $f(T)$ gravity models by using cosmological data. In particular, we investigate the restrictions given by the gas mass fraction measurements of galaxy clusters and transversal BAO data. Both data sets are regarded as weakly dependent on a fiducial cosmology. In addition, we also include a CMB measurement of the temperature power spectrum first peak, along with $H(z)$ values from cosmic chronometers and supernovae data from the Pantheon data set. We also perform a forecast for future constraints on the deviation of $f(T)$ models from the $\Lambda$CDM scenario by following the specifications of the J-PAS and Euclid surveys and find significant improvements on the constraints of the $b$-parameter, when compared to the results of the statistical analysis.

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$f(T)$ Gravity: Background Dependence and Propagating Degrees of Freedom
gr-qc 2025-02 conditional novelty 6.0 of 10

By perturbing f(T) gravity around FLRW and Bianchi I spacetimes, the authors find that only the two gravitational-wave polarizations propagate in the gravity sector.

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