Construction of the cosmological model with periodically distributed inhomogeneities with growing amplitude

2021
journal article
article
dc.abstract.enWe construct an approximate solution to the cosmological perturbation theory around Einstein–de Sitter background up to the fourth-order perturbations. This could be done with the help of the specific symmetry condition imposed on the metric, from which follows that the model density forms an infinite, cubic lattice. To verify the convergence of the perturbative construction, we express the resulting metric as a polynomial in the perturbative parameter and calculate the exact Einstein tensor. In our model, it seems that physical quantities averaged over large scales overlap with the respective Einstein–de Sitter prediction, while local observables could differ significantly from their background counterparts. As an example, we analyze the behavior of the local measurements of the Hubble constant and compare them with the Hubble constant of the homogeneous background model. A difference between these quantities is important in the context of a current Hubble tension problem.pl
dc.affiliationWydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomicznepl
dc.contributor.authorSikora, Szymon - 103605 pl
dc.contributor.authorGłód, Krzysztof - 138522 pl
dc.date.accessioned2021-03-30T06:28:38Z
dc.date.available2021-03-30T06:28:38Z
dc.date.issued2021pl
dc.date.openaccess0
dc.description.accesstimew momencie opublikowania
dc.description.number3pl
dc.description.versionostateczna wersja wydawcy
dc.description.volume81pl
dc.identifier.articleid208pl
dc.identifier.doi10.1140/epjc/s10052-021-08992-2pl
dc.identifier.eissn1434-6052pl
dc.identifier.issn1434-6044pl
dc.identifier.projectROD UJ / OPpl
dc.identifier.urihttps://ruj.uj.edu.pl/xmlui/handle/item/268292
dc.languageengpl
dc.language.containerengpl
dc.rightsUdzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa*
dc.rights.licenceCC-BY
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/legalcode.pl*
dc.share.typeotwarte czasopismo
dc.subtypeArticlepl
dc.titleConstruction of the cosmological model with periodically distributed inhomogeneities with growing amplitudepl
dc.title.journalThe European Physical Journal. C, Particles and Fieldspl
dc.typeJournalArticlepl
dspace.entity.typePublication
dc.abstract.enpl
We construct an approximate solution to the cosmological perturbation theory around Einstein–de Sitter background up to the fourth-order perturbations. This could be done with the help of the specific symmetry condition imposed on the metric, from which follows that the model density forms an infinite, cubic lattice. To verify the convergence of the perturbative construction, we express the resulting metric as a polynomial in the perturbative parameter and calculate the exact Einstein tensor. In our model, it seems that physical quantities averaged over large scales overlap with the respective Einstein–de Sitter prediction, while local observables could differ significantly from their background counterparts. As an example, we analyze the behavior of the local measurements of the Hubble constant and compare them with the Hubble constant of the homogeneous background model. A difference between these quantities is important in the context of a current Hubble tension problem.
dc.affiliationpl
Wydział Fizyki, Astronomii i Informatyki Stosowanej : Instytut – Obserwatorium Astronomiczne
dc.contributor.authorpl
Sikora, Szymon - 103605
dc.contributor.authorpl
Głód, Krzysztof - 138522
dc.date.accessioned
2021-03-30T06:28:38Z
dc.date.available
2021-03-30T06:28:38Z
dc.date.issuedpl
2021
dc.date.openaccess
0
dc.description.accesstime
w momencie opublikowania
dc.description.numberpl
3
dc.description.version
ostateczna wersja wydawcy
dc.description.volumepl
81
dc.identifier.articleidpl
208
dc.identifier.doipl
10.1140/epjc/s10052-021-08992-2
dc.identifier.eissnpl
1434-6052
dc.identifier.issnpl
1434-6044
dc.identifier.projectpl
ROD UJ / OP
dc.identifier.uri
https://ruj.uj.edu.pl/xmlui/handle/item/268292
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Udzielam licencji. Uznanie autorstwa 4.0 Międzynarodowa
dc.rights.licence
CC-BY
dc.rights.uri*
http://creativecommons.org/licenses/by/4.0/legalcode.pl
dc.share.type
otwarte czasopismo
dc.subtypepl
Article
dc.titlepl
Construction of the cosmological model with periodically distributed inhomogeneities with growing amplitude
dc.title.journalpl
The European Physical Journal. C, Particles and Fields
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations

* The migration of download and view statistics prior to the date of April 8, 2024 is in progress.

Views
7
Views per month
Views per city
Ashburn
4
Wroclaw
2
Dublin
1
Downloads
sikora_glod_construction_of_the_cosmological_model_2021.pdf
3