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Paper   IPM / Physic / 16056
School of Physics
  Title:   Is there an early Universe solution to Hubble tension?
1.  Ch. Krishnan
2.  E. O Colgain
3.  . Ruchika
4.  A. A. Sen
5.  M.M. Sheikh-Jabbari
6.  T. Yang
  Status:   Published
  Journal: Phys. Rev. D
  No.:  10
  Vol.:  102
  Year:  2020
  Pages:   103525
  Supported by:  IPM
We consider a low redshift (z < 0.7) cosmological dataset comprising megamasers, cosmic chronometers, type Ia SNe and BAO, which we bin according to their redshift. For each bin, we read the value of H0 by fitting directly to the flat ΛCDM model. Doing so, we find that H0 descends with redshift, allowing one to fit a line with a non-zero slope of statistical significance 2.1  σ. Our results are in accord with a similar descending trend reported by the H0LiCOW collaboration. If substantiated going forward, early Universe solutions to the Hubble tension will struggle explaining this trend.

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