386 citations · 1.3k across the 33 of their papers we have counts for
33 papers
Racetrack Inflation and Cosmic Strings
Philippe Brax, Carsten van de Bruck, Anne-Christine Davis +3
We consider the coupling of racetrack inflation to matter fields as realised in the D3/D7 brane system. In particular, we investigate the possibility of cosmic string formation in…
SUGRA chaotic inflation and moduli stabilisation
Stephen C. Davis, Marieke Postma
Chaotic inflation predicts a large gravitational wave signal which can be tested by the upcoming Planck satellite. We discuss a SUGRA implementation of chaotic inflation in the pre…
Mimicking general relativity in the solar system
Luca Amendola, Christos Charmousis, Stephen C. Davis
In order for a modified gravity model to be a candidate for cosmological dark energy it has to pass stringent local gravity experiments. We find that a Brans-Dicke (BD) theory with…
The Robustness of n_s < 0.95 in Racetrack Inflation
Ph. Brax, Stephen C. Davis, M. Postma
A spectral index n_s < 0.95 appears to be a generic prediction of racetrack inflation models. Reducing a general racetrack model to a single-field inflation model with a simple pot…
Solar System Constraints on f(G) Dark Energy
Stephen C. Davis
Corrections to solar system gravity are derived for f(G) gravity theories, in which a function of the Gauss-Bonnet curvature term is added to the gravitational action. Their effect…
Solar System Constraints on Gauss-Bonnet Dark Energy
Stephen C. Davis
Quadratic curvature Gauss-Bonnet gravity may be the solution to the dark energy problem, but a large coupling strength is required. This can lead to conflict with laboratory and pl…