English

Phase-space analysis of Horava-Lifshitz cosmology

High Energy Physics - Theory 2009-12-15 v1 Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology

Abstract

We perform a detailed phase-space analysis of Horava-Lifshitz cosmology, with and without the detailed-balance condition. Under detailed-balance we find that the universe can reach a bouncing-oscillatory state at late times, in which dark-energy, behaving as a simple cosmological constant, is dominant. In the case where the detailed-balance condition is relaxed, we find that the universe reaches an eternally expanding, dark-energy-dominated solution, with the oscillatory state preserving also a small probability. Although this analysis indicates that Horava-Lifshitz cosmology can be compatible with observations, it does not enlighten the discussion about its possible conceptual and theoretical problems.

Keywords

Cite

@article{arxiv.0909.3571,
  title  = {Phase-space analysis of Horava-Lifshitz cosmology},
  author = {Genly Leon and Emmanuel N. Saridakis},
  journal= {arXiv preprint arXiv:0909.3571},
  year   = {2009}
}

Comments

12 pages, 5 figures