5 citations · 15 across the 16 of their papers we have counts for
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Complete background cosmology of parity-even quadratic metric-affine gravity
Thomas Dyer, Will Barker, Damianos Iosifidis
The cosmology of metric-affine gravity is studied for the general, parity preserving action quadratic in curvature, torsion and non-metricity. The model contains 27 a priori indepe…
Inflationary and Gravitational Wave Signatures of Small Primordial Black Holes as Dark Matter
Will Barker, Benjamin Gladwyn, Sebastian Zell
Mounting evidence suggests that the semi-classical description of a black hole breaks down at the latest after losing an O(1) fraction of its mass. As a result, effects such as mem…
PSALTer: Particle Spectrum for Any Tensor Lagrangian
Will Barker, Carlo Marzo, Claire Rigouzzo
We present the PSALTer software for efficiently computing the mass and energy of the particle spectrum for any (e.g. higher-rank) tensor field theory in the Wolfram Language. The u…
Every Poincaré gauge theory is conformal: a compelling case for dynamical vector torsion
Will Barker, Michael Hobson, Anthony Lasenby +2
The Poincaré gauge theory (PGT) of gravity provides a viable formulation of general relativity (Einstein-Cartan theory), and a popular model-building framework for modified gravity…
Particle spectra of general Ricci-type Palatini or metric-affine theories
W. Barker, C. Marzo
In the context of weak-field metric-affine (i.e. Palatini) gravity near Minkowski spacetime, we compute the particle spectra in the simultaneous presence of all independent contrac…
Consistent particle physics in metric-affine gravity from extended projective symmetry
Will Barker, Sebastian Zell
It is well-known that the Einstein-Hilbert action exhibits a projective invariance in metric-affine gravity, generated by a single vector (just like diffeomorphisms). However, this…