Early dark energy does not restore cosmological concordance

  title={Early dark energy does not restore cosmological concordance},
  author={J. Hill and Evan Mcdonough and M. Toomey and S. Alexander},
  journal={Physical Review D},
Current cosmological data exhibit a tension between inferences of the Hubble constant, $H_0$, derived from early and late-universe measurements. One proposed solution is to introduce a new component in the early universe, which initially acts as "early dark energy" (EDE), thus decreasing the physical size of the sound horizon imprinted in the cosmic microwave background (CMB) and increasing the inferred $H_0$. Previous EDE analyses have shown this model can relax the $H_0$ tension, but the CMB… Expand
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