Speaker
Maurice van putten
(Sejong University)
Description
A dynamical dark energy is derived from the scaling dimension two in UVIR-consistency between a bare cosmological constant with Big Bang cosmologies. The resulting Hubble expansion predicts the Hubble constant H0 to be $\sqrt{6/5}$ times the H0 in Planck-$\Lambda$CDM analysis of the CMB. Expressed equivalently in $w(a)$CDM, this new Hubble expansion predicts a phantom crossing at redshift $z=1.9$ coincident with the peak in the cosmic star-formation rate and galaxy mergers. [Based, in part, on van Putten, 2025, JHEAP Lett, 45, 195.]
Author
Maurice van putten
(Sejong University)