Skip to main content
We gratefully acknowledge support from the Simons Foundation, member institutions, and all contributors. Donate
arXiv logo
Cornell University Logo

Astrophysics

arXiv:0807.3343 (astro-ph)
[Submitted on 22 Jul 2008 (v1), last revised 26 Mar 2009 (this version, v3)]

Title:Parameterizing the Effect of Dark Energy Perturbations on the Growth of Structures

Authors:G. Ballesteros, A. Riotto
View PDF
Abstract: We present an analytical fit to the growth function of the dark matter perturbations when dark energy perturbations are present. The growth index depends upon the dark energy equation of state w, the speed of sound of the dark energy fluctuations, the dark matter abundance and the observed comoving scale. The growth index changes by ~5% for small speed of sound and large deviations of w from -1 with respect to its value in the limit of no dark energy perturbations.
Comments: 18 LaTex pages, 7 figures. Typo corrected
Subjects: Astrophysics (astro-ph); High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Theory (hep-th)
Report number: CERN-PH-TH/2008-160, IFT-UAM/CSIC-08-46
Cite as: arXiv:0807.3343 [astro-ph]
  (or arXiv:0807.3343v3 [astro-ph] for this version)
  https://doi.org/10.48550/arXiv.0807.3343
Journal reference: Phys.Lett.B668:171-176,2008
Related DOI: https://doi.org/10.1016/j.physletb.2008.08.035

Submission history

From: Guillermo Ballesteros [view email]
[v1] Tue, 22 Jul 2008 17:14:40 UTC (199 KB)
[v2] Wed, 15 Oct 2008 15:36:47 UTC (192 KB)
[v3] Thu, 26 Mar 2009 17:20:56 UTC (199 KB)
Full-text links:

Access Paper:

  • View PDF
  • TeX Source
  • Other Formats
view license
Current browse context:
astro-ph
< prev   |   next >
new | recent | 2008-07
Change to browse by:
hep-ph
hep-th

References & Citations

export BibTeX citation

Bookmark

BibSonomy logo Reddit logo

Bibliographic and Citation Tools

Bibliographic Explorer (What is the Explorer?)
Connected Papers (What is Connected Papers?)
Litmaps (What is Litmaps?)
scite Smart Citations (What are Smart Citations?)

Code, Data and Media Associated with this Article

alphaXiv (What is alphaXiv?)
CatalyzeX Code Finder for Papers (What is CatalyzeX?)
DagsHub (What is DagsHub?)
Gotit.pub (What is GotitPub?)
Hugging Face (What is Huggingface?)
Papers with Code (What is Papers with Code?)
ScienceCast (What is ScienceCast?)

Demos

Replicate (What is Replicate?)
Hugging Face Spaces (What is Spaces?)
TXYZ.AI (What is TXYZ.AI?)

Recommenders and Search Tools

Influence Flower (What are Influence Flowers?)
CORE Recommender (What is CORE?)
IArxiv Recommender (What is IArxiv?)

arXivLabs: experimental projects with community collaborators

arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website.

Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them.

Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs.

Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)