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Título

Accelerating cosmologies from non-local higher-derivative gravity

AutorCapozziello, Salvatore; Elizalde, Emilio ; Nojiri, Shin'ichi; Odintsov, Sergei D.
Palabras clave[PACS] Higher-dimensional gravity and other theories of gravity
[PACS] Experimental tests of gravitational theories
[PACS] Cosmology
[PACS] Strings and branes
[PACS] Dark energy
Fecha de publicación12-ene-2009
EditorElsevier
CitaciónPhysics Letters B 671(1): 193-198 (2009)
ResumenWe study accelerating cosmological solutions of a general class of non-linear gravities which depend on Gauss–Bonnet and other higher derivative invariants. To achieve this goal a local formulation with auxiliary scalars for arbitrary higher-derivative non-local gravity is developed. It is demonstrated that non-local Gauss–Bonnet gravity can be reduced, in the local formulation, to a model of string-inspired scalar-Gauss–Bonnet gravity. A natural unification, in the theory here developed, of the early-time inflation epoch with a late-time acceleration stage can also be realized.
Descripción6 pages.-- PACS nrs.: 04.50.+h; 04.80.Cc; 98.80.-k; 11.25.-w; 95.36.+x.-- ArXiv pre-print available at: http://arxiv.org/abs/0809.1535
Versión del editorhttp://dx.doi.org/10.1016/j.physletb.2008.11.060
URIhttp://hdl.handle.net/10261/10754
DOI10.1016/j.physletb.2008.11.060
ISSN0370-2693
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