Scale Invariant Power Spectrum in Hořava-Lifshitz Cosmology without Matter

Details Scale Invariant Power Spectrum in Hořava-Lifshitz Cosmology without Matter Scale Invariant Power Spectrum in Hořava-Lifshitz Cosmology without Matter

2009-05-14

arxiv.org/abs/0905.2300v3

JCAP 0908:007,2009

Physics

High Energy Physics

High Energy Physics - Theory

10 pages; References added; More clarifications, published version

Scientific paper

10.1088/1475-7516/2009/08/007

In this paper we investigate the physical implications of the dynamical scalar mode in pure Horava-Lifshitz gravity on cosmology. We find that it can produce a scale-invariant power spectrum in UV era if the detailed balance condition on the action is relaxed. This indicates that the physical scalar mode may seed the large scale structure and Horava-Lifshitz cosmology could be a qualified alternative to inflationary scenario.

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