Zobrazeno 1 - 10
of 46
pro vyhledávání: '"P. Mennim"'
Publikováno v:
Phys.Rev.D77:021501,2008
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 bulk spacetime. Although the difference between the
Externí odkaz:
http://arxiv.org/abs/0709.0294
Publikováno v:
JCAP 0704:001,2007
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 space-time. In the high energy regime, small-scale inflaton
Externí odkaz:
http://arxiv.org/abs/hep-th/0701241
Publikováno v:
Phys.Rev.D75:084002,2007
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 system, and find that the model can exhibit both bou
Externí odkaz:
http://arxiv.org/abs/hep-th/0612202
Publikováno v:
Phys.Rev. D72 (2005) 064001
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 criterion for the coupled boundary and bulk system is fo
Externí odkaz:
http://arxiv.org/abs/hep-th/0504201
Publikováno v:
Phys.Rev. D71 (2005) 104026
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 forces generated by gravitational, dilatonic and ge
Externí odkaz:
http://arxiv.org/abs/hep-th/0412053
Autor:
Battye, Richard A., Mennim, Andrew
Publikováno v:
Phys.Rev.D70:124008,2004
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 anti-de Sitter spacetime. This method avoids the p
Externí odkaz:
http://arxiv.org/abs/hep-th/0408101
Publikováno v:
Phys.Rev.Lett.92:201305,2004
We discuss the linearized, gravitational self-interaction of a brane of arbitrary codimension in a spacetime of arbitrary dimension. We find that in the codimension two case the gravitational self-force is exactly zero for a Nambu-Goto equation of st
Externí odkaz:
http://arxiv.org/abs/hep-th/0312198
Publikováno v:
Phys.Rev. D69 (2004) 064040
We discuss the evolution of cosmological tensor perturbations in the RSII model. In Gaussian normal coordinates the wave equation is non-separable, so we use the near-brane limit to perform the separation and study the evolution of perturbations. Mas
Externí odkaz:
http://arxiv.org/abs/hep-th/0308134
Publikováno v:
Class.Quant.Grav. 18 (2001) 4871-4896
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 subject to a mutual attraction force which simulat
Externí odkaz:
http://arxiv.org/abs/gr-qc/0106038
Publikováno v:
Phys.Rev. D64 (2001) 124007
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 equations, we derive the effective Einstein equations
Externí odkaz:
http://arxiv.org/abs/hep-th/0105091