Scalar field perturbations in Hořava-Lifshitz cosmology
Open accessAbstract
We study perturbations of a scalar field cosmology in Hořava-Lifshitz gravity, adopting the most general setup without detailed balance but with the projectability condition. We derive the generalized Klein-Gordon equation, which is sixth-order in spatial derivatives. Then we investigate scalar field perturbations coupled to gravity in a flat Friedmann-Robertson-Walker background. In the sub-horizon regime, the metric and scalar field modes have independent oscillations with different frequencies and phases except in particular cases. On super-horizon scales, the perturbations become adiabatic during slow-roll inflation driven by a single field, and the comoving curvature perturbation is constant.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Perturbations for Hořava-Lifshitz theory have been worked out; the growth equations are different from those of GR and offer the possibility to test these theories using large-scale structure.
“Perturbations for the Hořava–Lifshitz theory have been worked out in a number of papers including (Mukohyama 2009b; Gao et al. 2010; Wang et al. 2010a; Wang 2010). The growth equations are different from those of GR and offer the possibility to test these theories using large-scale structure.”
From Testing general relativity in cosmology (2019) · cites this paper as Wang et al. 2010a
The citation lists haven’t been fetched yet
References 73 · Cited by 72
- Authors
- Wang, A., Wands, D., & Maartens, R.
- Affiliations
- Baylor University (US)
- University of Portsmouth (GB)
- Venue
- Journal of Cosmology and Astroparticle Physics
- Publisher
- IOP Publishing
- Published
- 2010-03-09
- Volume
- 2010
- Issue
- 03
- Pages
- 013-013
- ISSN
- 1475-7508 (ISSN-L)
- 1475-7516
- OpenAlex
- W2122217824
- Cited by
- 72
- References
- 73
- Citations by year
- 2026: 1 · 2025: 2 · 2023: 1 · 2022: 3 · 2021: 2 · 2019: 2 · 2018: 1 · 2017: 4 · 2016: 2 · 2015: 5 · 2014: 2 · 2013: 5 · 2012: 11
- FWCI
- 8.40
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Journal of Cosmology and Astroparticle Physics (publishedVersion)
- arXiv (Cornell University) (publishedVersion)
- arXiv (Cornell University)
- Funders
- Science and Technology Facilities Council (PP/E001033/1, ST/F002335/1)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Noncommutative and Quantum Gravity Theories
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Black Holes and Theoretical Physics
- Keywords
- Hořava-Lifshitz gravity, scalar perturbations, Klein-Gordon equation, slow-roll inflation, comoving curvature perturbation, modified gravity cosmology
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
