Theoretical bounds on the tensor-to-scalar ratio in the cosmic microwave background

Lotfi Boubekeur

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

12 Citas (Scopus)

Resumen

Tensor modes in the cosmic microwave background are one of the most robust signatures of inflation. We derive theoretical bounds on the tensor fraction, as a generalization of the well-known Lyth bound. Under reasonable assumptions, the new bounds are at least 2 orders of magnitude stronger than the original one. We comment on a previously derived generalization, the so-called Efstathiou-Mack relationship. We also derive a new absolute upper bound on tensors using de Sitter entropy bounds.

Idioma originalInglés
Número de artículo061301
PublicaciónPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volumen87
N.º6
DOI
EstadoPublicada - 14 mar. 2013
Publicado de forma externa

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