Consistency relation in general braneworld inflation

2003/09/18 by David Seery, Andy Taylor · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph

paper · pdf · doi:10.1103/physrevd.71.063508

published as Phys.Rev. D71 (2005) 063508 · 14 pages, Latex, uses revtex 4; submitted to Phys. Rev. D

arxiv created 2003/09/18 · openalex publication_date 2005/03/10 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We study gravitational perturbations in general braneworlds carrying a perturbation of the de Sitter universe. We derive our results from a full five-dimensional quantum field theory, and exhibit explicit formulas for the scalar and tensor power spectra. We show by explicit calculation that the dark radiation induced by our perturbation is zero, which implies that the deformation arises from the matter theory only and enables proper comparison with four-dimensional results. We argue that for the consistency relation to hold in the braneworld, significant fine tuning of the matter theory is necessary.

Citations

• Quantum Fields in Curved Space
• Non-Gaussian features of primordial fluctuations in single field inflationary models
• Large Mass Hierarchy from a Small Extra Dimension

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• Slow-roll corrections to inflaton fluctuations on a brane