Trace anomaly inflation in brane-induced gravity

Journal Article · Thu May 15 04:00:00 EDT 2008 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2008/05/012· OSTI ID:22156625

Corradini, Olindo ^[1]; Iglesias, Alberto ^[2]

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1. Dipartimento di Fisica, Universita di Bologna and INFN, Sezione di Bologna, Via Irnerio, 46, Bologna I-40126 (Italy)
2. Department of Physics, University of California, Davis, CA 95916 (United States)

In this paper we find that Starobinsky's inflationary solution is also valid in the Dvali-Gabadadze-Porrati (DGP) model where a 3-brane is embedded in five-dimensional Minkowski bulk. We show that such a solution is typically not supported by the self-accelerated branch of the model, giving therefore a natural selection of the conventional branch of solutions. In the absence of brane-induced Einstein-Hilbert term the SA branch is always selected out. We then study the linearized modes around all such de Sitter brane solutions finding perturbative stability for a range of parameters of the brane QFT.

• OSTI ID: 22156625
• Journal Information: Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 05 Vol. 2008; ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
BRANES
DE SITTER SPACE
GRAVITATION
INFLATIONARY UNIVERSE
MATHEMATICAL SOLUTIONS
MINKOWSKI SPACE