Hints of new physics for the Hubble tension: violation of cosmological principle

Understand

Discrepancy between the measurements of Hubble constant $H_{0}$ from the cosmic microwave background (CMB) and the local distance ladder is the most serious challenge to the standard $\Lambda$CDM model.

• Recent researches point out that it might be related with the violation of cosmological principle.
• Here, we investigate the impact of dipole-monopole correction on the constraints of $H_{0}$ utilizing the dipole fitting method based on the $\Lambda$CDM model and cosmography method.
• Our results show that the dipole-monopole correction can reduce the constraints of $H_{0}$ from a larger value consistent with SH0ES results to a smaller value consistent with Planck results.