4.7 Article

Can late dark energy transitions raise the Hubble constant?

Journal

PHYSICAL REVIEW D
Volume 101, Issue 10, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.101.103517

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Funding

  1. U.S. Department of Energy [DE-FG02-13ER41958]
  2. Simons Foundation
  3. NASA ATP [NNH17ZDA001N]
  4. Center for Particle Cosmology

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Late times dark energy transitions at redshifts z << 0.1 can raise the predicted value of the Hubble constant to the SHOES value, 74.03 +/- 1.42 (km s(-1) Mpc(-1)) or more, while providing an equally good fit as Lambda CDM at 67.73 +/- 0.41 to higher redshift data, in particular from the cosmic microwave background and baryon acoustic oscillations. These models however do not fully resolve the true source of tension between the distance ladder and high redshift observations: the local calibration of supernovae luminosities well out into the Hubble flow. When tested in this manner by transferring the SHOES calibration to the Pantheon supernovae dataset, the ability of such transitions to raise the Hubble constant is reduced to 69.17 +/- 1.09. Such an analysis should also be used when testing any dynamical dark energy model which can produce similarly fine features in redshift or local void models.

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