An accelerating Universe without Λ\LambdaΛ in concordance with the last H0H_0H0​ measured value (original) (raw)

We present a Markov Chain Monte Carlo (MCMC) analysis with the most updated catalog of SN-Ia using an alternative cosmological model named Delta Gravity. This model is based on a new Einstein-Hilbert action obtained by the extension of a new symmetry symbolized as tildedelta\tilde{\delta}tildedelta. This theory predicts an accelerating Universe without the need to introduce a cosmological constant Lambda\LambdaLambda by hand in the equations. We obtained a very good fit to the SN-Ia Data, and with this, we found the two free parameters of the theory called CCC and L_2L_2L2. With these values, we can predict different cosmological parameters. One of them is the Hubble constant. The last H0H_0H0 local value measurement is in tension with the CMB Data from Planck.\cite{Riess2016}. Therefore is very interesting to analyze it in this theory. DG predicts H0H_0H0 to be 74.47pm1.6374.47\pm 1.6374.47pm1.63 km/(s Mpc). This value is in concordance with the last measurement of the H0H_0H_0 local value, 73.83pm1.4873.83\pm 1.4873.83pm1.48 km/(s Mpc) \cite{Riess2018}.