Brane-world inflation: slow-roll corrections to the spectral index (2007)
Koyama, Kazuya, Mennim, Andrew, Wands, David
We quantify the slow-roll corrections to primordial density perturbations arising from inflation driven by a four-dimensional scalar field with a monomial potential in a five-dimensional non-compact...
Primordial perturbations from slow-roll inflation on a brane (2007)
Koyama, Kazuya, Mennim, Andrew, Rubakov, V. A., Wands, David, Hiramatsu, Takashi
In this paper we quantise scalar perturbations in a Randall-Sundrum-type model of inflation where the inflaton field is confined to a single brane embedded in five-dimensional anti-de Sitter...
Coupled bulk and brane fields about a de Sitter brane (2006)
Cardoso, Antonio, Koyama, Kazuya, Mennim, Andrew, Seahra, Sanjeev S., Wands, David
We consider the evolution of a bulk scalar field in anti-de Sitter (AdS) spacetime linearly coupled to a scalar field on a de Sitter boundary brane. We present results of a spectral analysis of the...
Coupled boundary and bulk fields in anti-de Sitter (2005)
Koyama, Kazuya, Mennim, Andrew, Wands, David
We investigate the dynamics of a boundary field coupled to a bulk field with a linear coupling in an anti-de Sitter bulk spacetime bounded by a Minkowski (Randall-Sundrum) brane. An instability...
Linearized self-forces for branes (2004)
Battye, Richard A., Carter, Brandon, Mennim, Andrew
We compute the regularized force density and renormalized action due to fields of external origin coupled to a brane of arbitrary dimension in a spacetime of any dimension. Specifically, we consider...
Multiple-scales analysis of cosmological perturbations in brane-worlds (2004)
Battye, Richard A., Mennim, Andrew
We present a new approximation method for solving the equations of motion for cosmological tensor perturbations in a Randall-Sundrum brane-world model of the type with one brane in a five-dimensional...
Simulated gravity without true gravity in asymmetric brane-world scenarios (2001)
Carter, Brandon, Uzan, Jean-Philippe, Battye, Richard A., Mennim, Andrew
This article investigates asymmetric brane-world scenarios in the limit when the bulk gravity is negligible. We show that, even when true self gravity is negligible, local mass concentrations will be...
Einstein equations for an asymmetric brane-world (2001)
Battye, Richard A., Carter, Brandon, Mennim, Andrew, Uzan, Jean-Philippe
We consider a brane-world of co-dimension one without the reflection symmetry that is commonly imposed between the two sides of the brane. Using the coordinate-free formalism of the Gauss-Codacci...