In the realm of the Hubble tension—a review of solutions * * In honor of the seminal work by E Hubble [1]

  title={In the realm of the Hubble tension—a review of solutions * * In honor of the seminal work by E Hubble [1]},
  author={Eleonora Di Valentino and Olga Mena and Supriya Pan and Luca Visinelli and Weiqiang Yang and Alessandro Melchiorri and David F. Mota and Adam G. Riess and Joseph I. Silk},
  journal={Classical and Quantum Gravity},
 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 disagreement between predictions of the Hubble constant, H 0, made by the early time probes in concert with the ‘vanilla’ ΛCDM cosmological model, and a… 
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