A doublet of cosmological models to challenge the H0 tension in the Pantheon Supernovae Ia catalog

Understand

$\Lambda$CDM provides a leading framework in the interpretation of modern cosmology.

• Nevertheless, the scientific community still struggles with many open problems in cosmology.
• Among the most noticeable ones, the tension in the Hubble constant $H_0$ is particularly intriguing, prompting a wide range of possible solutions.
• In the present work, the flat scale-free cosmology ($S$CDM) of Maeder (2017) is tested for $H_0$ tension in fits to the Pantheon sample of Supernovae Ia.