43 citations · 157 across the 9 of their papers we have counts for
6 papers · 1 filter
Parametrizing theories of gravity on large and small scales in cosmology
Timothy Clifton, Viraj A. A. Sanghai
We present a link between parametrizations of alternative theories of gravity on large and small scales in cosmology. This relationship is established using theoretical consistency…
Post-Newtonian Gravity in Cosmology
Viraj A. A. Sanghai
The post-Newtonian (PN) perturbative framework has been successful in understanding the slow-motion, weak field limit of Einstein's theory of gravity on solar system scales, and fo…
Parameterized Post-Newtonian Cosmology
Viraj A. A. Sanghai, Timothy Clifton
Einstein's theory of gravity has been extensively tested on solar system scales, and for isolated astrophysical systems, using the perturbative framework known as the parameterized…
Cosmological backreaction in the presence of radiation and a cosmological constant
Viraj A. A. Sanghai, Timothy Clifton
We construct high-precision models of the Universe that contain radiation, a cosmological constant, and periodically distributed inhomogeneous matter. The density contrasts in thes…
Post-Newtonian cosmological models
Viraj A. A. Sanghai
We construct a framework to probe the effect of non-linear structure formation on the large-scale expansion of the universe. We take a bottom-up approach to cosmological modelling…
Post-Newtonian Cosmological Modelling
Viraj A. A. Sanghai, Timothy Clifton
We develop a new approach to building cosmological models, in which small pieces of perturbed Minkowski space are joined together at reflection-symmetric boundaries in order to for…