http://arxiv.org/abs/2107.14377
We have studied how local density perturbations could reconcile the Hubble tension. We reproduced a local void through a perturbed FLRW metric with a potential $\Phi$ which depends on both time and space. This method allowed us to obtain a perturbed luminosity distance, which is compared with both local and cosmological data. We got a region of local parameters, $q_0^\text{Lo}$ and $j_0^\text{Lo}$, which are in agreement with a local void of $\Omega_{m,\text{void}}=-0.30\pm 0.15$ explaining the differences between the local $H_0$ and the Planck $H_0$. However, when constraining local cosmological parameters with previous results, we found that neither $\Lambda$CDM nor $\Lambda(\omega)$CDM could solve the Hubble tension.
M. Martín and C. Rubio
Mon, 2 Aug 21
50/82
Comments: 9 pages ,3 figures, 1 link to GitHub