We present a construction employing a type IIA supergravity and 3-form flux background together with an NS5-brane that localises massless gravity near the 5-brane worldvolume. The nonsingular underlying type IIA solution is a lift to 10D of the vacuum solution of the 6D Salam-Sezgin model and has a hyperbolicH(2,2)×S1 structure in the lifting dimensions. A fully back-reacted solution including ...

In the context of the Randall-Sundrum braneworld, an exhaustive and detailed description of the approach based in the minimal anisotropic consequence onto the brane, which has been successfully used to generate exact interior solutions to Einstein’s field equations for static and non-uniform braneworld stars with local and non-local bulk terms, is carefully presented. It is shown that this appr...

In this paper we explicitly work out the secular perturbations induced on all the Keplerian orbital elements of a test body to order O(e2) in the eccentricity e by the weak-field long-range modifications of the usual Newton-Einstein gravity due to the Dvali-Gabadadze-Porrati (DGP) braneworld model. Both the Gauss and the Lagrange perturbative schemes are used. It turns out that the argument of ...

We study braneworld scenarios within the framework of five-dimensional general relativity. The braneworld Einstein field equations (BEFE) of Shiromizu, Maeda and Sasaki (SMS) possess two salient features which distinguish them from the analogous Einstein field equations, namely a Weyl term and a term Q quadratic in the braneworld energy-momentum. The former is commonly neglected, while the prec...

We argue that the cosmological constant problem can be solved in a braneworld model with infinite-volume extra dimensions, avoiding no-go arguments applicable to theories that are four-dimensional in the infrared. Gravity on the brane becomes higher-dimensional at super-Hubble distances, which entails that the relation between the acceleration rate and vacuum energy density flips upside down co...

Much work has been devoted to the phenomenology and cosmology of the socalled braneworld universe, where the (3+1)-dimensional universe familiar to us lies on a brane surrounded by a (4+1)-dimensional bulk spacetime that is essentially empty except for a negative cosmological constant and the various modes associated with gravity. For such a braneworld cosmology, the difficulty of justifying a ...

The holographic conjecture for black holes localized on a 3-brane in RandallSundrum braneworld models RS2 predicts the existence of a classical 5D time dependent solution dual to a 4D evaporating black hole. We simulate some basic features of such solution by studying null geodesics of the Schwarzschild black string, in particular those propagating nontrivially in the bulk, and using holographi...

We study the existence and stability of static kinklike configurations of a five-dimensional scalar field, with Dirichlet boundary conditions, along the extra dimension of a warped braneworld. In the presence of gravity such configurations fail to stabilize the size of the extra dimension, leading us to consider additional scalar fields with the role of stabilization. We numerically identify mu...