• DOI:10.1103/PhysRevD.102.024048
Corpus ID: 212415007

Addressing $H_0$ tension with emergent dark radiation in unitary gravity

@inproceedings{Barker2020AddressingT,
  title={Addressing \$H_0\$ tension with emergent dark radiation in unitary gravity},
  author={W. E. Barker and A. Lasenby and M. P. Hobson and W. J. Handley},
  year={2020}
}

W. E. Barker, A. Lasenby, +1 author W. J. Handley

Published 2020

Physics

We propose a one-parameter extension to ΛCDM, expected to strongly affect cosmological tensions. An effective dark radiation component in the early universe redshifts away as hot dark matter, then quintessence, tracking the dominant equation-of-state parameter and leaving a falsifiable torsion field in the current epoch. This picture results from a new Poincaré gauge theory (PGT), one of the most promising among the latest batch of 58 PGTs found to be both power-counting renormalisable and free… CONTINUE READING

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