New observational constraints on f ( T ) gravity from cosmic chronometers
- Departamento de Física, Universidade Federal de Juiz de Fora, 36036-330, Juiz de Fora, MG (Brazil)
- Department of Physical Sciences, Indian Institute of Science Education and Research—Kolkata, Mohanpur—741246, West Bengal (India)
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 ΛCDM cosmology through a sole parameter. Our analysis reveals that for one of the models a small but non-zero deviation from ΛCDM cosmology is slightly favored, while for the other models the best fit is very close to ΛCDM scenario. Clearly, f ( T ) gravity is consistent with observations, and it can serve as a candidate for modified gravity.
- OSTI ID:
- 22679521
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Vol. 2016, Issue 08; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
Similar Records
Constraining the time evolution of dark energy, curvature and neutrino properties with cosmic chronometers
Can f(T) gravity theories mimic ΛCDM cosmic history