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Paper   IPM / Astronomy / 16830
School of Astronomy
  Title:   CMB lensing in a modified ΛCDM model in light of the H0 tension
  Author(s): 
1.  Hossein . Moshafi
2.  Shant . Baghram
3.  Nima . Khosravi
  Status:   Published
  Journal: Phys. Rev. D
  Vol.:  104
  Year:  2021
  Supported by:            ipm IPM
  Abstract:
The observed discrepancy of the Hubble parameter measurements in the local universe with the cosmic microwave background (CMB) data may indicate a new physics. It is vital to test the alternative models that reconcile the Hubble tension with other cosmological observations in this direction. The CMB lensing is a crucial observation that relates the early universe perturbations to the matter's late-time distribution. In this work, we study the prediction of the üΛCDM as a solution for H0 tension for CMB lensing and the low- and high-ℓ's temperature (TT) power spectrum internal inconsistency. We show that this model relaxes the low- and high-ℓ's TT mild inconsistency and the CMB lensing tensions simultaneously. Accordingly, üΛCDM having the same number of free parameters as ΛCDM with lensing amplitude AL added, has a better fit with Δχ2=−3.3

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