Speaker
Denitsa STAICOVA
Description
It has been theorized that Dynamical Dark Energy (DDE) could be a possible solution to the Hubble tension. To avoid the degeneracy between the Hubble parameter H0 and the sound horizon scale rd, we use their multiplication as one parameter c/(H0rd). To the BAO points we add the SNIa Pantehon dataset and GRB dataset and the points from the CMB priors. We use different DE parametrizations to constrain the cosmological parameters and we compare the results based on statistical measures. We compare the results with the ones obtained by marginalizing over the H0⋅rd by redefining the likelihood in a BAO and SNIa datasets.
