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1. Identificação
Tipo de ReferênciaArtigo em Revista Científica (Journal Article)
Sitemtc-m21c.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34R/43MN5FL
Repositóriosid.inpe.br/mtc-m21c/2020/12.02.14.18   (acesso restrito)
Última Atualização2020:12.02.14.18.58 (UTC) simone
Repositório de Metadadossid.inpe.br/mtc-m21c/2020/12.02.14.18.58
Última Atualização dos Metadados2022:01.04.01.35.41 (UTC) administrator
DOI10.1140/epjc/s10052-020-08586-4
ISSN1434-6044
Chave de CitaçãoAkarsuKaKuNuÖzSh:2020:ThFeOb
TítuloRastall gravity extension of the standard Λ CDM model: theoretical features and observational constraints
Ano2020
MêsNov.
Data de Acesso12 maio 2024
Tipo de Trabalhojournal article
Tipo SecundárioPRE PI
Número de Arquivos1
Tamanho2243 KiB
2. Contextualização
Autor1 Akarsu, Özgür
2 Katirci, Nihan
3 Kumar, Suresh
4 Nunes, Rafael da Costa
5 Öztürk, Burcu
6 Sharma, Shivani
ORCID1 0000-0001-6917-6176
2 0000-0002-9492-3791
3 0000-0002-1638-2264
4 0000-0002-8432-5616
5 0000-0003-2845-5106
6 0000-0003-3117-9704
Grupo1
2
3
4 DIDAS-CGCEA-INPE-MCTIC-GOV-BR
Afiliação1 Istanbul Technical University
2 Istanbul Technical University
3 BITS Pilani
4 Instituto Nacional de Pesquisas Espaciais (INPE)
5 Istanbul Technical University
6 BITS Pilani
Endereço de e-Mail do Autor1 akarsuo@itu.edu.tr
2 nihan.katirci@itu.edu.tr
3 suresh.kumar@pilani.bits-pilani.ac.in
4 rafadcnunes@gmail.com
5 ozturkburc@itu.edu.tr
6 p20170025@pilani.bits-pilani.ac.in
RevistaEuropean Physical Journal C
Volume80
Número11
Páginase1050
Nota SecundáriaA2_INTERDISCIPLINAR A2_BIOTECNOLOGIA A2_ASTRONOMIA_/_FÍSICA B1_MATEMÁTICA_/_PROBABILIDADE_E_ESTATÍSTICA B1_ENGENHARIAS_IV
Histórico (UTC)2020-12-02 14:19:38 :: simone -> administrator :: 2020
2022-01-04 01:35:41 :: administrator -> simone :: 2020
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãopublisher
ResumoWe present a detailed investigation of the Rastall gravity extension of the standard CDM model. We review the model for two simultaneous modifications of different nature in the Friedmann equation due to the Rastall gravity: the new contributions of the material (actual) sources (considered as effective source) and the altered evolution of the material sources. We discuss the role/behavior of these modifications with regard to some low redshift tensions, including the so-called H0 tension, prevailing within the standard CDM. We constrain the model at the level of linear perturbations, and obtain the first constraints through a robust and accurate analysis using the latest full Planck cosmic microwave background (CMB) data, with and without including baryon acoustic oscillations (BAO) data. We find that the Rastall parameter (null for general relativity) is consistent with zero at 68% CL (with a tendency towards positive values, −0.0001 << 0.0007 (CMB+BAO) at 68% CL), which in turn implies no significant statistical evidence for deviation from general relativity, and also a precision of O(10−4) for the coefficient −1/2 of the term gμν R in the Einstein field equations of general relativity (guaranteeing the local energy-momentum conservation). We explore the consequences led by the Rastall gravity on the cosmological parameters in the light of the observational analyses. It turns out that the effective source, with a present-day density parameter X0 = −0.0010±0.0013 (CMB+BAO, 68% CL), dynamically screens the usual vacuum energy at high redshifts, but this mechanism barely works due to the oppoa e-mail: akarsuo@itu.edu.tr b e-mail: nihan.katirci@itu.edu.tr c e-mail: suresh.kumar@pilani.bits-pilani.ac.in (corresponding author) d e-mail: rafadcnunes@gmail.com e e-mail: ozturkburc@itu.edu.tr f e-mail: p20170025@pilani.bits-pilani.ac.in sition by the altered evolution of cold dark matter. Consequently, two simultaneous modifications of different nature in the Friedmann equation by the Rastall gravity act against each other, and do not help to considerably relax the low redshift tensions, including the so-called H0 tension. Our results may offer a guide for the research community that studies the Rastall gravity in various aspects of gravitation and cosmology.
ÁreaCEA
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4. Condições de acesso e uso
Idiomaen
Arquivo AlvoAkarsu_rastall.pdf
Grupo de Usuáriossimone
Grupo de Leitoresadministrator
simone
Visibilidadeshown
Permissão de Leituradeny from all and allow from 150.163
Permissão de Atualizaçãonão transferida
5. Fontes relacionadas
Unidades Imediatamente Superiores8JMKD3MGPCW/3ETR8EH
Lista de Itens Citandosid.inpe.br/bibdigital/2013/10.01.00.07 2
DivulgaçãoWEBSCI; PORTALCAPES; SCOPUS.
Acervo Hospedeirourlib.net/www/2017/11.22.19.04
6. Notas
Campos Vaziosalternatejournal archivingpolicy archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn keywords label lineage mark mirrorrepository nextedition notes parameterlist parentrepositories previousedition previouslowerunit progress project resumeid rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url
7. Controle da descrição
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