Testing dark energy after pre-recombination early dark energy

被引：17

作者：

Wang, Hao ^{[1
,2
]}

Piao, Yun-Song ^{[1
,2
,3
,4
]}

机构：

[1] UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China

[2] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China

[3] Int Ctr Theoret Phys Asia Pacific Beijing, Hangzhou, Peoples R China

[4] Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China

来源：

PHYSICS LETTERS B | 2022年 / 832卷

关键词：

EQUATION-OF-STATE; COSMOLOGICAL CONSEQUENCES; CONSTRAINTS; QUINTOM; OSCILLATIONS; UNIVERSE; SAMPLE; PROBE; MODEL; VIEW;

D O I：

10.1016/j.physletb.2022.137244

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In the studies on pre-recombination early dark energy (EDE), the evolution of Universe after recombination is usually regarded as Lambda CDM-like, which corresponds that the equation of state of dark energy responsible for current accelerated expansion is w =-1. However, in realistic models, wmight be evolving. We consider the parametrizations of wwith respect to the redshift z in Axion-like EDE and AdSEDE models, respectively. We performed the Monte Carlo Markov chain analysis with recent cosmological data, and found that the bestfit w(z) is compatible with w(0) = -1, wa = 0(the cosmological constant) and the evolution of wis only marginally favored, which so has little effect on lifting the bestfit value of H-0. (c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).

引用

页数：9

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