45 citations · 114 across the 10 of their papers we have counts for
10 papers
Manifestly covariant variational principle for gauge theories of gravity
Michael Hobson, Anthony Lasenby, Will Barker
A variational principle for gauge theories of gravity is presented, which maintains manifest covariance under the symmetries to which the action is invariant, throughout the calcul…
Einstein-Proca theory from the Einstein-Cartan formulation
Will Barker, Sebastian Zell
We construct a theory of gravity in which a propagating massive vector field arises from a quadratic curvature invariant. The Einstein-Cartan formulation and a partial suppression…
Does gravitational confinement sustain flat galactic rotation curves without dark matter?
W. E. V. Barker, M. P. Hobson, A. N. Lasenby
The short answer is . Specifically, this paper considers a recent body of work which suggests that general relativity requires neither the support of dark mat…
Hausdorff dimension of fermions on a random lattice
Mattia Varrone, William E V Barker
Geometric properties of lattice quantum gravity in two dimensions are studied numerically via Monte Carlo on Euclidean Dynamical Triangulations. A new computational method is propo…
Supercomputers against strong coupling in gravity with curvature and torsion
W. E. V. Barker
Many theories of gravity are spoiled by strongly coupled modes: the high computational cost of Hamiltonian analysis can obstruct the identification of these modes. A computer algeb…
Geometric multipliers and partial teleparallelism in Poincaré gauge theory
W. E. V. Barker
The dynamics of the torsion-powered teleparallel theory are only viable because thirty-six multiplier fields disable all components of the Riemann--Cartan curvature. We generalise…