14 citations · 17 across the 2 of their papers we have counts for
3 papers
Mapping Poincaré gauge cosmology to Horndeski theory for emergent dark energy
W. E. V. Barker, A. N. Lasenby, M. P. Hobson +1
The ten-parameter, quadratic Poincaré gauge theory of gravity is a plausible alternative to general relativity. We show that the rich background cosmology of the gauge theory is de…
Addressing tension with emergent dark radiation in unitary gravity
W. E. V. Barker, A. N. Lasenby, M. P. Hobson +1
We propose a one-parameter extension to CDM, expected to strongly affect cosmological tensions. An effective dark radiation component in the early universe redshifts away as hot…
Rotation of inertial frames by angular momentum of matter and waves
William Barker, Tomáš Ledvinka, Donald Lynden-Bell +1
We elucidate the dynamics of a thin spherical material shell with a tangential pressure, using a new approach. This is both simpler than the traditional method of extrinsic curvatu…