Scale Invariant Power Spectrum in Ho\v{r}ava-Lifshitz Cosmology without Matter
High Energy Physics - Theory
2010-01-15 v3 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
Abstract
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.
Keywords
Cite
@article{arxiv.0905.2300,
title = {Scale Invariant Power Spectrum in Ho\v{r}ava-Lifshitz Cosmology without Matter},
author = {Bin Chen and Shi Pi and Jin-Zhang Tang},
journal= {arXiv preprint arXiv:0905.2300},
year = {2010}
}
Comments
10 pages; References added; More clarifications, published version