Inflation and Braneworlds: Degeneracies and Consistencies

Details Inflation and Braneworlds: Degeneracies and Consistencies Inflation and Braneworlds: Degeneracies and Consistencies

2002-05-15

arxiv.org/abs/astro-ph/0205236v1

Phys.Rev. D66 (2002) 043514

Astronomy and Astrophysics

Astrophysics

10 pages

Scientific paper

10.1103/PhysRevD.66.043514

Scalar and tensor perturbations arising in an inflationary braneworld scenario driven by a single scalar field are considered, where the bulk on either side of the brane corresponds to Anti-de Sitter spaces with different cosmological constants. A consistency relation between the two spectra is derived and found to have an identical form to that arising in standard single-field inflation based on conventional Einstein gravity. The dS/CFT correspondence may provide further insight into the origin of this degeneracy. Possible ways of lifting such a degeneracy are discussed.

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