Concept

Cosmic string

Related publications (39)

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Search for branons at LEP

Aurelio Bay

We search, in the context of extra-dimension scenarios, for the possible existence of brane fluctuations, called branons. Events with a single photon or a single Z-boson and missing energy and momentum collected with the L3 detector in e+e- collisions at c ...

2004

Neoclassical tearing physics in the spherical tokamak MAST

Olivier Sauter

Results from MAST provide a first test of neoclassical tearing mode physics in the spherical tokamak (ST). The mode accounts for the main performance limit in conventional tokamaks. Its behavior in the ST is remarkably well described by existing theoretica ...

2002

Graviton loops and brane observables

Riccardo Rattazzi, Roberto Contino

We discuss how to consistently perform effective Lagrangian computations in quantum gravity with branes in compact extra dimensions. A reparametrization invariant and infrared finite result is obtained in a non trivial way. It is crucial to properly accoun ...

2001

Warped compactification on Abelian vortex in six dimensions

We consider the possibility of localizing gravity on a Nielsen-Olesen vortex in the context of the Abelian Higgs model. The vortex lives in a six-dimensional space-time with negative bulk cosmological constant. In this model we find a region of the paramet ...

2001

Living inside a hedgehog: Higher-dimensional solutions that localize gravity

We consider spherically symmetric higher-dimensional solutions of Einstein's equations with a bulk cosmological constant and n transverse dimensions. In contrast to the case of one or two extra dimensions we find no solutions that localize gravity when n ≥ ...

2000

The fate of the radion in models with metastable graviton

Riccardo Rattazzi

We clarify some general issues in models where gravity is localized at intermediate distances. We introduce the radion mode, which is usually neglected, and we point out that its role in the model is crucial. We show that the brane bending effects discusse ...

2000

Black hole-D-brane correspondence: An example

Claudio Scrucca

We explore the connection between D-branes and black holes in one particular case: a D3-brane compactified to four dimensions on T-6/Z(3). Using the D-brane boundary state description, we show the equivalence with a double extremal N = 2 black hole solutio ...

Springer Verlag1999

Closed string radiation from moving D-branes

Claudio Scrucca

We compute the amplitude for the radiation of massless NS-NS closed string states from the interaction of two moving D-branes. We consider particle-like D-branes with reference to four-dimensional spacetime, in toroidal and orbifold compactifications, and ...

1998

Black holes as D3-branes on Calabi-Yau threefolds

Claudio Scrucca

We show how an extremal Reissner-Nordstrom black hole can be obtained by wrapping a dyonic D3-brane on a Calabi-Yau manifold. In the orbifold limit T-6/Z(3), We explicitly show the correspondence between the solution of the supergravity equations of motion ...

1998