Cosmological constraints of Palatini f (R) gravity

被引：5

作者：

Gomes, Debora Aguiar ^{[1
]}

Briffa, Rebecca ^{[2
,3
]}

Kozak, Aleksander ^{[4
]}

Said, Jackson Levi ^{[2
,3
]}

Saal, Margus ^{[1
]}

Wojnar, Aneta ^{[5
,6
]}

机构：

[1] Univ Tartu, Inst Phys, Lab Theoret Phys, W Ostwaldi 1, Tartu 50411, Estonia

[2] Univ Malta, Inst Space Sci & Astron, MSD 2080, Msida, Malta

[3] Univ Malta, Dept Phys, MSD 2080, Msida, Malta

[4] Univ Wroclaw, Inst Theoret Phys, Pl Maxa Borna 9, PL-50206 Wroclaw, Poland

[5] Univ Complutense Madrid, Dept Fis Teor, E-28040 Madrid, Spain

[6] Univ Complutense Madrid, IPARCOS, E-28040 Madrid, Spain

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2024年 / 01期

关键词：

modified gravity; baryon acoustic oscillations; DARK-MATTER; INFLATION; CONSTANT; EXPANSION; DYNAMICS; SAMPLE;

D O I：

10.1088/1475-7516/2024/01/011

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this study, we investigate a Palatini f (R) gravity model featuring a quadratic term correction, aligning it with the most recent expansion rate data, with a particular focus on the latest SNIa and BAO data. Our analysis employs CC data as the fundamental dataset, complemented by contributions from the SN sample and a combination of non -overlapping transversal BAO datasets. We conduct a comprehensive MCMC analysis for each data set combination, yielding constraints on all cosmological parameters within the model. Additionally, we incorporate the latest Hubble constant value from the SH0ES Team. Finally, we present a statistical comparison between the Palatini quadratic model and Lambda CDM using the AIC and BIC metrics, ultimately obtaining the constraint |alpha| <= 1049 m2. We also stress the significance of studying stellar and substellar objects for obtaining more precise constraints on modified gravity compared to those derived from cosmological observations.

引用

页数：24

共 50 条

[1] Cosmological constraints on f(R) gravity theories within the Palatini approach
Amarzguioui, M.
Elgaroy, O.
Mota, D. F.
Multamaki, T.
[J]. ASTRONOMY & ASTROPHYSICS, 2006, 454 (03) : 707 - 714
[2] f(R) gravity theories in Palatini formalism:: Cosmological dynamics and observational constraints
Fay, Stephane
Tavakol, Reza
Tsujikawa, Shinji
[J]. PHYSICAL REVIEW D, 2007, 75 (06):
[3] Bianchi V cosmological model in Palatini f (R) gravity
Banik, Debika Kangsha
Banik, Sebika Kangsha
Bhuyan, Kalyan
[J]. GENERAL RELATIVITY AND GRAVITATION, 2018, 50 (01)
[4] Cosmographic constraints on a class of Palatini f(R) gravity
Pires, N.
Santos, J.
Alcaniz, J. S.
[J]. PHYSICAL REVIEW D, 2010, 82 (06):
[5] Bianchi V cosmological model in Palatini f(R) gravity
Debika Kangsha Banik
Sebika Kangsha Banik
Kalyan Bhuyan
[J]. General Relativity and Gravitation, 2018, 50
[6] Statefinder diagnostic and constraints on the Palatini f(R) gravity theories
Cao, Shu-Lei
Li, Song
Yu, Hao-Ran
Zhang, Tong-Jie
[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2018, 18 (03)
[7] SOLAR SYSTEM CONSTRAINTS ON ANALYTIC PALATINI f(R) GRAVITY
Toniato, Junior D.
[J]. ACTA PHYSICA POLONICA B PROCEEDINGS SUPPLEMENT, 2020, 13 (02) : 255 - 259
[8] Solar system constraints on analytic palatini f(R) gravity
Toniato, Júnior D.
[J]. Acta Physica Polonica B, Proceedings Supplement, 2020, 13 (02): : 255 - 259
[9] Statefinder diagnostic and constraints on the Palatini f(R) gravity theories
Shu-Lei Cao
Song Li
Hao-Ran Yu
Tong-Jie Zhang
[J]. Research in Astronomy and Astrophysics, 2018, 18 (03) : 11 - 26
[10] Palatini formulation of f(R, T) gravity theory, and its cosmological implications
Jimin Wu
Guangjie Li
Tiberiu Harko
Shi-Dong Liang
[J]. The European Physical Journal C, 2018, 78

← 1 2 3 4 5 →