395 citations · 2.4k across the 17 of their papers we have counts for
5 papers · 1 filter
Structure formation in the DGP cosmological model
Kazuya Koyama, Roy Maartens
The DGP brane-world model provides an alternative to the standard LCDM cosmology, in which the late universe accelerates due to a modification of gravity rather than vacuum energy.…
Regular collision of dilatonic inflating branes
Emily Leeper, Kazuya Koyama, Roy Maartens
We demonstrate that a two brane system with a bulk scalar field driving power-law inflation on the branes has an instability in the radion. We solve for the resulting trajectory of…
A late-accelerating universe with no dark energy - and a finite-temperature big bang
Richard A. Brown, Roy Maartens, Eleftherios Papantonopoulos +1
Brane-world models offer the possibility of explaining the late acceleration of the universe via infra-red modifications to General Relativity, rather than a dark energy field. How…
Delocalization of brane gravity by a bulk black hole
Sanjeev S. Seahra, Chris Clarkson, Roy Maartens
We investigate the analogue of the Randall-Sundrum brane-world in the case when the bulk contains a black hole. Instead of the static vacuum Minkowski brane of the RS model, we hav…
A black hole mass threshold from non-singular quantum gravitational collapse
Martin Bojowald, Rituparno Goswami, Roy Maartens +1
Quantum gravity is expected to remove the classical singularity that arises as the end-state of gravitational collapse. To investigate this, we work with a toy model of a collapsin…