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In the realm of the Hubble tension-a review of solutions

Riess, Adam G.; Di Valentino, Eleonora; Melchiorri, Alessandro +6 more

The simplest ΛCDM model provides a good fit to a large span of cosmological data but harbors large areas of phenomenology and ignorance. With the improvement of the number and the accuracy of observations, discrepancies among key cosmological parameters of the model have emerged. The most statistically significant tension is the 4σ to 6σ disagreem…