80 citations · 322 across the 11 of their papers we have counts for
3 papers · 1 filter
First-order adiabatic perturbations of a perfect fluid about a general FLRW background using the 1+3 covariant and gauge-invariant formalism
Sylvain D. Brechet, Michael P. Hobson, Anthony N. Lasenby
An analysis of adiabatic perturbations of a perfect fluid is performed to first-order about a general FLRW background using the 1+3 covariant and gauge-invariant formalism. The ana…
Analytic solutions to Riemann-squared gravity with background isotropic torsion
A. N. Lasenby, C. J. L. Doran, R. Heineke
Motivated by conventional gauge theories, we consider a theory of gravity in which the Einstein-Hilbert action is replaced by a term that is quadratic in the Riemann tensor. We foc…
Integral equations, Kerr-Schild fields and gravitational sources
Chris Doran, Anthony Lasenby
Kerr-Schild solutions to the vacuum Einstein equations are considered from the viewpoint of integral equations. We show that, for a class of Kerr-Schild fields, the stress-energy t…