TY  - JOUR
AU  - Schiavone, T.
AU  - Montani, G.
AU  - Bombacigno, F.
PY  - 2023
DA  - 2023//
TI  - f(R) gravity in the Jordan frame as a paradigm for the Hubble tension
T2  - Mon. Not. Roy. Astron. Soc.
JO  - Monthly Notices of the Royal Astronomical Society
SP  - L72-L77
VL  - 522
IS  - 1
PB  - Oxford Univ Press
KW  - supernovae: general
KW  - galaxies: distances and redshifts
KW  - cosmological parameters
KW  - dark energy
KW  - cosmology: theory
AB  - We analyse the f(R) gravity in the so-called Jordan frame, as implemented to the isotropic Universe dynamics. The goal of the present study is to show that according to recent data analyses of the supernovae Ia Pantheon sample, it is possible to account for an effective redshift dependence of the Hubble constant. This is achieved via the dynamics of a non-minimally coupled scalar field, as it emerges in the f(R) gravity. We face the question both from an analytical and purely numerical point of view, following the same technical paradigm. We arrive to establish that the expected decay of the Hubble constant with the redshift z is ensured by a form of the scalar field potential, which remains essentially constant for z less than or similar to 0.3, independently if this request is made a priori, as in the analytical approach, or obtained a posteriori, when the numerical procedure is addressed. Thus, we demonstrate that an f(R) dark energy model is able to account for an apparent variation of the Hubble constant due to the rescaling of the Einstein constant by the f(R) scalar mode.
SN  - 0035-8711
UR  - https://arxiv.org/abs/2211.16737
UR  - https://doi.org/10.1093/mnrasl/slad041
DO  - 10.1093/mnrasl/slad041
LA  - English
N1  - WOS:001066034100015
ID  - Schiavone_etal2023
ER  -