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| DOI | 10.1016/J.PHYSLETB.2020.135435 | ||||
| Año | 2020 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
We show that the combination of cubic invariants defining five-dimensional quasitopological gravity, when written in four dimensions, reduce to the version of four-dimensional Einsteinian gravity recently proposed by Arciniega, Edelstein = Jaime, that produces second order equations of motion in a FLRW ansatz, with a purely geometrical inflationary period. We introduce a quartic version of the four-dimensional Einsteinian theory with similar properties, and study its consequences. In particular we found that there exists a region on the space of parameters which allows for thermodynamically stable black holes, as well as a well-defined cosmology with geometrically driven inflation. We briefly discuss the cosmological inhomogeneities in this setup. We also provide a combination of quintic invariants with those properties.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Cisterna, Adolfo | Hombre |
Universidad Central de Chile - Chile
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| 2 | Grandi, Nicolas | Hombre |
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - Argentina
UNLP - Argentina Consejo Nacional de Investigaciones Científicas y Técnicas - Argentina Consejo Nacl Invest Cient & Tecn - Argentina |
| 3 | Oliva, Julio | Hombre |
Universidad de Concepción - Chile
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| Fuente |
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| Consejo Nacional de Investigaciones Científicas y Técnicas |
| CONICYT (Chile) |
| Comisión Nacional de Investigación Científica y Tecnológica |
| CONICET (Argentina) |
| Comisión Nacional de Investigación CientÃfica y Tecnológica |
| Consejo Nacional de Investigaciones CientÃficas y Técnicas |
| Stays in Chile of International Excellence Researchers |
| Agradecimiento |
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| The authors want to thank Jose Edelstein for enlightening comments, in particular regarding the sign of the cubic coupling giving rise to healthy cosmologies as opposite to that allowing the existence of black holes. This work was partially supported by CONICET (Argentina) grant number PIP-2017-1109 and CONICYT (Chile) PAI80160018, Stays in Chile of International Excellence Researchers (N.G.), by CONICYT (Chile) grant numbers 1181047, 1150907 (J.O.) and 11170274 (A.C.). |
| The authors want to thank José Edelstein for enlightening comments, in particular regarding the sign of the cubic coupling giving rise to healthy cosmologies as opposite to that allowing the existence of black holes. This work was partially supported by CONICET (Argentina) grant number PIP-2017-1109 and CONICYT (Chile) PAI80160018 , Stays in Chile of International Excellence Researchers (N.G.), by CONICYT (Chile) grant numbers 1181047 , 1150907 (J.O.) and 11170274 (A.C.). |