ITP OpenIR  > SCI期刊论文
Liu, Xue-Wen; Heneka, Caroline3; Amendola, Luca2
Constraining coupled quintessence with the 21 cm signal
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Language英语
KeywordDARK ENERGY COSMOLOGY EPOCH MODEL
AbstractThe 21 cm line probes the evolution of matter perturbations over a wide range of redshifts, from the dark ages to the completion of reionization, and down to the present-day Universe. Observing the 21 cm cosmological signal will extend our understanding of the evolution of the Universe and it is thus important to investigate the predictions of different cosmological models. In this paper we focus on the prospect of constraining coupled quintessence models during the Epoch of Reionization both for global signal experiments and for intensity mapping surveys. To derive the all-sky 21 cm signal and fluctuations in coupled quintessence, we simulate cosmological volumes of the 21 cm signal including the coupling between dark matter and the quintessence field, where the strength of the coupling is labeled by the parameter Q. We show that the coupling between dark matter and quintessence modifies structure formation and expedites the process of reionization. For upcoming 21 cm line surveys like SKA and a fiducial global 21 cm signal experiment, we perform a Fisher matrix analysis to constrain the coupling Q and the dark matter density parameter Omega(dm). The results indicate that SKA will be able to place a 68% upper limit of 0.04 on vertical bar Q vertical bar. At the same time, our fiducial global 21 cm detector constrains the dark matter density parameter Omega(dm) with a predicted error of Delta Omega(dm) approximate to 0.005, whereas SKA sets a weaker constraint of Delta Omega(dm) approximate to 0.1. These constraints are comparable to those already obtained from the cosmic microwave background, but explore an entirely different redshift range.
2020
ISSN1475-7516
Issue5Pages:38
Cooperation Status国际
Subject AreaAstronomy & Astrophysics ; Physics
MOST Discipline CatalogueAstronomy & Astrophysics ; Physics, Particles & Fields
DOI10.1088/1475-7516/2020/05/038
Indexed BySCIE
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/26947
CollectionSCI期刊论文
Affiliation1.Chinese Acad Sci, CAS Key Lab Theoret Phys, Inst Theoret Phys, Zhong Guan Cun East St 55, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Phys Sci, Yuquan Rd 19A, Beijing 100049, Peoples R China
3.Heidelberg Univ, Inst Theoret Phys, Philosophenweg 16, D-69120 Heidelberg, Germany
4.Scuola Normale Super Pisa, Piazza Cavalieri 7, I-56126 Pisa, Italy
Recommended Citation
GB/T 7714
Liu, Xue-Wen,Heneka, Caroline,Amendola, Luca. Constraining coupled quintessence with the 21 cm signal[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2020(5):38.
APA Liu, Xue-Wen,Heneka, Caroline,&Amendola, Luca.(2020).Constraining coupled quintessence with the 21 cm signal.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(5),38.
MLA Liu, Xue-Wen,et al."Constraining coupled quintessence with the 21 cm signal".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .5(2020):38.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu, Xue-Wen]'s Articles
[Heneka, Caroline]'s Articles
[Amendola, Luca]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu, Xue-Wen]'s Articles
[Heneka, Caroline]'s Articles
[Amendola, Luca]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu, Xue-Wen]'s Articles
[Heneka, Caroline]'s Articles
[Amendola, Luca]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.