395 citations · 2.4k across the 17 of their papers we have counts for
4 papers · 1 filter
Cosmology with inhomogeneous magnetic fields
J. D. Barrow, R. Maartens, C. G. Tsagas
We review spacetime dynamics in the presence of large-scale electromagnetic fields and then consider the effects of the magnetic component on perturbations to a spatially homogeneo…
Crossing the phantom divide without phantom matter
Luis P. Chimento, Ruth Lazkoz, Roy Maartens +1
A class of braneworld models can lead to phantom-like acceleration of the late universe, but without the need for any phantom matter. In the simplest models, the universe contains…
Observational constraints on self-accelerating cosmology
Roy Maartens, Elisabetta Majerotto
The DGP brane-world model provides a simple alternative to the standard LCDM cosmology, with the same number of parameters. There is no dark energy - the late universe self-acceler…
Dark Energy from Brane-world Gravity
Roy Maartens
Recent observations provide strong evidence that the universe is accelerating. This confronts theory with a severe challenge. Explanations of the acceleration within the framework…