Parametrization for the scale dependent growth in modified gravity
| dc.contributor.author | Sanchez, J. C. B. | en |
| dc.contributor.author | Dent, J. B. | en |
| dc.contributor.author | Dutta, S. | en |
| dc.contributor.author | Perivolaropoulos, L. | en |
| dc.date.accessioned | 2015-11-24T18:39:16Z | |
| dc.date.available | 2015-11-24T18:39:16Z | |
| dc.identifier.issn | 1475-7516 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/17412 | |
| dc.rights | Default Licence | - |
| dc.subject | cosmological parameters from lss | en |
| dc.subject | galaxy clusters | en |
| dc.subject | galaxy redshift survey | en |
| dc.subject | lyman-alpha forest | en |
| dc.subject | digital sky survey | en |
| dc.subject | equation-of-state | en |
| dc.subject | dark energy | en |
| dc.subject | cosmological models | en |
| dc.subject | accelerating universe | en |
| dc.subject | general-relativity | en |
| dc.subject | power spectrum | en |
| dc.subject | tensor gravity | en |
| dc.title | Parametrization for the scale dependent growth in modified gravity | en |
| heal.abstract | We propose a scale dependent analytic approximation to the exact linear growth of density perturbations in Scalar-Tensor (ST) cosmologies. In particular, we show that on large subhorizon scales, in the Newtonian gauge, the usual scale independent subhorizon growth equation does not describe the growth of perturbations accurately, as a result of scale-dependent relativistic corrections to the Poisson equation. A comparison with exact linear numerical analysis indicates that our approximation is a significant improvement over the standard subhorizon scale independent result on large subhorizon scales. A comparison with the corresponding results in the Synchronous gauge demonstrates the validity and consistency of our analysis. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.primary | Doi 10.1088/1475-7516/2010/09/021 | - |
| heal.identifier.secondary | <Go to ISI>://000283576500015 | - |
| heal.identifier.secondary | http://iopscience.iop.org/1475-7516/2010/09/021/pdf/1475-7516_2010_09_021.pdf | - |
| heal.journalName | Journal of Cosmology and Astroparticle Physics | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 2010 | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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