Gauss-Bonnet inflation

Panagiota Kanti, Radouane Gannouji, Naresh Dadhich

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

94 Citas (Scopus)

Resumen

We consider an Einstein-scalar-Gauss-Bonnet gravitational theory, and argue that at early times the Ricci scalar can be safely ignored. We then demonstrate that the pure scalar-Gauss-Bonnet theory, with a quadratic coupling function, naturally supports inflationary - de Sitter - solutions. During inflation, the scalar field decays exponentially and its effective potential remains always bounded. The theory also contains solutions where these de Sitter phases possess a natural exit mechanism and are replaced by linearly expanding - Milne - phases.

Idioma originalInglés
Número de artículo041302
PublicaciónPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volumen92
N.º4
DOI
EstadoPublicada - 24 ago. 2015
Publicado de forma externa

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