Partial Relief of the Hubble Tension and a Natural Self-Interacting Dark Matter Candidate From Staged Symmetry Breaking

Zachary J. Hoelscher, Thomas W. Kephart, Robert J. Scherrer +1

The values of the Hubble constant (${\mathrm{H}}_0$) inferred from the cosmic microwave background (CMB) and local measurements via the distance ladder exhibit a $\sim 5\sigma$ tension. In thi…