Revealing the effects of curvature on the cosmological models

被引：20

作者：

Yang, Weiqiang ^{[1
]}

Giare, William ^{[2
,3
]}

Pan, Supriya ^{[4
,5
]}

Di Valentino, Eleonora ^{[6
]}

Melchiorri, Alessandro ^{[7
,8
]}

Silk, Joseph ^{[9
,10
,11
,12
]}

机构：

[1] Liaoning Normal Univ, Dept Phys, Dalian 116029, Peoples R China

[2] Ctr Nazl INFN Studi Avanzati, Galileo Galilei Inst Theoret Phys, Largo Enrico Fermi 2, I-50125 Florence, Italy

[3] Ist Nazl Fis Nucl, Sez Roma, Ple A Moro 2, I-00185 Rome, Italy

[4] Presidency Univ, Dept Math, 86-1 Coll St, Kolkata 700073, India

[5] Durban Univ Technol, Inst Syst Sci, POB 1334, ZA-4000 Durban, South Africa

[6] Univ Sheffield, Sch Math & Stat, Hounsfield Rd, Sheffield S3 7RH, England

[7] Univ Roma La Sapienza, Phys Dept, Ple Aldo Moro 2, I-00185 Rome, Italy

[8] Univ Roma La Sapienza, INFN, Ple Aldo Moro 2, I-00185 Rome, Italy

[9] CNRS, Inst Astrophys Paris, UMR7095, F-75014 Paris, France

[10] UPMC, Sorbonne Univ, F-75014 Paris, France

[11] Johns Hopkins Univ, Dept Phys & Astron, Homewood Campus, Baltimore, MD 21218 USA

[12] Univ Oxford, Dept Phys, BIPAC, Keble Rd, Oxford OX1 3RH, England

来源：

PHYSICAL REVIEW D | 2023年 / 107卷 / 06期

基金：

中国国家自然科学基金;

关键词：

DYNAMICAL DARK ENERGY; HUBBLE CONSTANT; CONSTRAINTS; GALAXY; H-0; OSCILLATION; TENSIONS; RELEASE;

D O I：

10.1103/PhysRevD.107.063509

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper, we consider the effects of adding curvature in extended cosmologies involving a free-tovary neutrino sector and different parametrizations of dark energy (DE). We make use of the Planck 2018 cosmic microwave background temperature and polarization data, baryon acoustic oscillations and Pantheon type Ia supernovae data. Our main result is that a nonflat Universe cannot be discarded in light of the current astronomical data, because we find an indication for a closed Universe in most of the DE cosmologies explored in this work. On the other hand, forcing the Universe to be flat can significantly bias the constraints on the equation of state of the DE component and its dynamical nature.

引用

页数：40

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