Gravitational Waves generated during inflation from a 5D vacuum theory of gravity in a de Sitter expansion

Details Gravitational Waves generated during inflation from a 5D vacuum theory of gravity in a de Sitter expansion Gravitational Waves generated during inflation from a 5D vacuum theory of gravity in a de Sitter expansion

2006-11-06

arxiv.org/abs/gr-qc/0611041v2

Phys.Lett.B645:6-11,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

Scientific paper

10.1016/j.physletb.2006.11.051

In this letter we study the generation of gravitational waves during inflation from a 5D vacuum theory of gravity. Within this formalism, on an effective 4D de Sitter background, we recover the typical results obtained with 4D inflationary theory in general relativity, for the amplitude of gravitational waves generated during inflation. We also obtain a range of values for the amplitude of tensor to scalar ratio which is in agreement with COBE observations.

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