A Hubble parameter estimate H0 = (73.37 ± 0.54) km/s/Mpc from the late-time Universe and the BAO

7 Jun 2022, 16:15
15m

Speaker

Maurice van putten (Sejong University)

Description

Modern precision measurements of the Hubble parameter H0 increasingly lay bare an accelerated expansion of the Universe beyond what is expected from Planck-LCDM analysis of the Cosmic Microwave Background (CMB). This H0-tension is here modeled by a non-local dark energy Λ=g(1-q)H^2, subject to the age of the Universe and the BAO inferred from globular clusters of the Milky Way and, respectively, the CMB. Bootstrapping from LCDM, we estimate H0 = (73.37 ± 0.54) km/s/Mpc with gravitational coupling constant g=(1-α/2), anticipating Riess' et al. recent measurement H0 = (73.30 ± 1.04) km/s/Mpc. (Based on van Putten PLB 823 136737 (2021).)

Primary author

Maurice van putten (Sejong University)

Presentation materials