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A supersymmetric Randall-Sundrum brane-world demands that not merely the graviton but the entire supergravity multiplet be trapped on the brane. To demonstrate this, we present a complete ansatz for the reduction of (D=5,N=4) gauged…

High Energy Physics - Theory · Physics 2009-10-31 M. J. Duff , James T. Liu , W. A. Sabra

We describe heterotic string and M-theory realizations of the Randall-Sundrum (RS) scenario with $\cx N=2$ and $\cx N=1$ supersymmetry in the bulk. Supersymmetry can be broken only on the world brane, a scenario that has been proposed to…

High Energy Physics - Theory · Physics 2014-11-18 P. Mayr

In this thesis, we discuss the idea of multigravity, namely the possibility that a significant component of gravity that we feel at intermediate distances (1 mm < r < 10^26 cm) is due to massive but ultralight gravitons. We demonstrate how…

High Energy Physics - Phenomenology · Physics 2007-05-23 Antonios Papazoglou

Braneworld scenarios with compact extra-dimensions need the volume of the extra space to be stabilized. Goldberger and Wise have introduced a simple mechanism, based on the presence of a bulk scalar field, able to stabilize the radius of…

High Energy Physics - Theory · Physics 2009-11-10 Julien Lesgourgues , Lorenzo Sorbo

In the literature about the Randall-Sundrum scenario one finds on one hand that there exist (small) corrections to Newton's law of gravity on the brane, and on another that the exact (and henceforth linearized) Einstein equations can be…

General Relativity and Quantum Cosmology · Physics 2009-11-07 Nathalie Deruelle , Tomas Dolezel

We construct an intersecting brane configuration in six-dimensional space with one extra space-like and one extra time-like dimensions. With a certain additional symmetry imposed on the extra space-time we have found that effective…

High Energy Physics - Theory · Physics 2009-11-07 Z. Berezhiani , M. Chaichian , A. B. Kobakhidze , Z. -H. Yu

We study gravity in backgrounds that are smooth generalizations of the Randall-Sundrum model, with and without scalar fields. These generalizations include three-branes in higher dimensional spaces which are not necessarily Anti-de Sitter…

High Energy Physics - Theory · Physics 2009-07-09 Csaba Csaki , Joshua Erlich , Timothy J. Hollowood , Yuri Shirman

We examine the possibility of the extra dimensional radius stabilization with only the gravity multiplet in the bulk and some couplings at orbifold fixed points in a supersymmetric Randall-Sundrum model. Unfortunately, we find that the…

High Energy Physics - Theory · Physics 2007-05-23 Nobuhito Maru , Nobuchika Okada

We consider the possibility to produce a bouncing universe in the framework of scalar-tensor gravity when the scalar field has a nonconformal coupling to the Ricci scalar. We prove that bouncing universes regular in the future with…

General Relativity and Quantum Cosmology · Physics 2016-06-01 B. Boisseau , H. Giacomini , D. Polarski

In this paper we investigate, from the dynamical systems perspective, the evolution of an scalar field with arbitrary potential trapped in a Randall-Sundrum's Braneworld of type 2. We consider an homogeneous but anisotropic Bianchi I (BI)…

General Relativity and Quantum Cosmology · Physics 2012-10-29 Dagoberto Escobar , Carlos R. Fadragas , Genly Leon , Yoelsy Leyva

The Randall-Sundrum scenario, with a 1+3-dimensional brane in a 5-dimensional bulk spacetime, can be generalized in various ways. We consider the case where the Z2-symmetry at the brane is relaxed, and in addition the gravitational action…

General Relativity and Quantum Cosmology · Physics 2009-11-10 Laszlo Gergely , Roy Maartens

Within the framework of geodetic brane gravity, the Universe is described as a 4-dimensional extended object evolving geodetically in a higher dimensional flat background. In this paper, by introducing a new pair of canonical fields…

General Relativity and Quantum Cosmology · Physics 2009-11-07 David Karasik , Aharon Davidson

The paper deals with dynamical system analysis of a coupled scalar field in the Randall-Sundrum(RS)2 brane world. The late time attractor describes the final state of the cosmic evolution. In RS2 based phantom model there is no late-time…

General Relativity and Quantum Cosmology · Physics 2016-01-05 Jibitesh Dutta , H. Zonunmawia

We advocate that the orbifold Z_2 symmetry of the gravity trapping model proposed by Randall and Sundrum can be seen, in appropriate coordinates, as a symmetry that exchanges the short distances with the large ones. Using diffeomorphism…

High Energy Physics - Theory · Physics 2009-10-31 C. Grojean

We present our recent work on brane world models with a non-minimally coupled scalar field. In [9] we examined the stability of these models against scalar field perturbations and we discussed possible physical implications, while in [10]…

High Energy Physics - Theory · Physics 2007-05-23 K. Farakos , P. Pasipoularides

In this talk I describe the low energy effective theory of the (supersymmetric) Randall-Sundrum scenario with arbitrary brane tensions. The distance between the branes is stabilized, at the classical level, by a potential for the radion…

High Energy Physics - Phenomenology · Physics 2007-05-23 Michele Redi

Stated succinctly, the original version of the Campbell-Magaard theorem says that it is always possible to locally embed any solution of 4-dimensional general relativity in a 5-dimensional Ricci-flat manifold. We discuss the proof of this…

General Relativity and Quantum Cosmology · Physics 2016-08-31 Sanjeev S. Seahra , Paul S. Wesson

We present a brane-world scenario in which two regions of $AdS_5$ space-time are glued together along a 3-brane with constant positive curvature such that {\em all} spatial dimensions form a compact manifold of topology $S^4$. It turns out…

High Energy Physics - Theory · Physics 2009-11-10 A. Gruppuso , E. Roessl , M. Shaposhnikov

We derive dynamical equations to describe a single 3-brane containing fluid matter and a scalar field coupling to the dilaton and the gravitational field in a five dimensional bulk. First, we show that a scalar field or an arbitrary fluid…

High Energy Physics - Theory · Physics 2012-10-23 Timon Boehm , Ruth Durrer , Carsten van de Bruck

The brane world scenario is a new approach to resolve the problem on how to compactify the higher dimensional spacetime to our 4-dimensional world. One of the remarkable features of this scenario is the higher dimensional effects in…

General Relativity and Quantum Cosmology · Physics 2009-11-11 Hiroyuki Nakano , Ken-ichi Nakao , Masahide Yamaguchi
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