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Inflation and Braneworlds: Degeneracies and Consistencies

Greg Huey·James E. Lidsey
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Abstract

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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Greg Huey, James E. Lidsey. 2002-05-15. Inflation and Braneworlds: Degeneracies and Consistencies. https://doi.org/10.1103/physrevd.66.043514

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