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| DOI | 10.1103/PHYSREVD.80.044029 | ||||
| Año | 2009 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
It is shown that Einstein gravity in four dimensions with small cosmological constant and small extra dimensions can be obtained by spontaneous compactification of Lovelock gravity in vacuum. Assuming that the extra dimensions are compact spaces of constant curvature, general relativity is recovered within a certain class of Lovelock theories possessing necessarily cubic or higher order terms in curvature. This bounds the higher dimension to at least 7. Remarkably, the effective gauge coupling and Newton constant in four dimensions are not proportional to the gravitational constant in higher dimensions, but are shifted with respect to their standard values. This effect opens up new scenarios where a maximally symmetric solution in higher dimensions could decay into the compactified spacetime either by tunneling or through a gravitational analog of ghost condensation. Indeed, this is what occurs requiring both the extra dimensions and the four-dimensional cosmological constant to be small.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Canfora, Fabrizio | Hombre |
Centro de Estudios Científicos - Chile
|
| 2 | Giacomini, A. | Hombre |
Centro de Estudios Científicos - Chile
Universidad Austral de Chile - Chile |
| 3 | TRONCOSO-PEREZ, RICARDO ALEJANDRO | Hombre |
Centro de Estudios Científicos - Chile
|
| 4 | Willison, Steven | Hombre |
Centro de Estudios Científicos - Chile
|
| Fuente |
|---|
| FONDECYT |
| CONICYT |
| Gobierno Regional de Los Ríos |
| Chilean Government |
| Telefónica del Sur |
| Arauco |
| Empresas CMPC |
| Antofagasta Minerals |
| Indura |
| Naviera Ultragas |
| UACh-DID |
| Agradecimiento |
|---|
| We thank G. Giribet, G. Kunstatter, D. Marolf, and J. Oliva for helpful comments. This work was partially funded by FONDECYT Grants No. 1051056, No. 1061291, No. 1071125, No. 1085322, No. 1085323, No. 3070057, No. 11080056, and No. 1095098, and UACh-DID Grant No. S-2009-57. Centro de Estudios Cientificos (CECS) is funded by the Chilean Government through the Millennium Science Initiative and the Centers of Excellence Base Financing Program of CONICYT. CECS is also supported by a group of private companies which at present includes Antofagasta Minerals, Arauco, Empresas CMPC, Indura, Naviera Ultragas, and Telefonica del Sur. CIN is funded by CONICYT and Gobierno Regional de Los Rios. |