513 citations · 6.8k across the 165 of their papers we have counts for
9 papers · 1 filter
Bulk black holes radiating in non-Z_2 brane-world spacetimes
David Jennings, Ian R. Vernon, Anne-Christine Davis +1
In this paper we present a general asymmetric brane model involving arbitrary energy transport to and from an embedded 4-D FRW universe. We derive a locally defined mass function f…
Chameleon Dark Energy
Ph. Brax, C. van de Bruck, A. C. Davis +2
Chameleons are scalar fields whose mass depends on the environment, specifically on the ambient matter density. While nearly massless in the cosmos, where the matter density is tin…
Radion Dynamics in BPS Braneworlds
S. L. Webster, A. C. Davis
We examine the moduli dynamics of a specific class of supergravity-inspired BPS braneworlds, clarifying the role of bulk scalar fields in brane collisions. The model contains as a…
Is the radion a chameleon?
Ph. Brax, C. van de Bruck, A. -C. Davis
The chameleon mechanism is a way to give an effective mass to a light scalar field via field self-interaction and interaction with matter. We study this mechanism in models in whic…
Cosmological Perturbations During Radion Stabilization
P. R. Ashcroft, C. van de Bruck, A. -C. Davis
We consider the evolution of cosmological perturbations during radion stabilization, which we assume to happen after a period of inflation in the early universe. Concentrating on t…
Detecting Dark Energy in Orbit -- the Cosmological Chameleon
Philippe Brax, Carsten van de Bruck, Anne-Christine Davis +2
We show that the chameleon scalar field can drive the current phase of cosmic acceleration for a large class of scalar potentials that are also consistent with local tests of gravi…
Moduli-Space Approximation for BPS Brane-Worlds
Gonzalo A. Palma, Anne-Christine Davis
We develop the moduli-space approximation for the low energy regime of BPS-branes with a bulk scalar field to obtain an effective four-dimensional action describing the system. An…
Low Energy Branes, Effective Theory and Cosmology
Gonzalo A. Palma, Anne-Christine Davis
The low energy regime of cosmological BPS-brane configurations with a bulk scalar field is studied. We construct a systematic method to obtain five-dimensional solutions to the ful…
Exact Evolution of the Complete Non-Linear Cosmological Radion
Ian R. Vernon, Anne-Christine Davis
The cosmological two brane model is discussed in detail. An elegant method for deriving the generalised non-linear equations for the interbrane distance is presented. These equatio…