| Physical condition for the slowing down of cosmic acceleration | |
Zhang MJ(张明建); Zhang, MJ; Xia, JQ
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| 2018 | |
| Source Publication | NUCLEAR PHYSICS B
 |
| ISSN | 0550-3213 |
| EISSN | 1873-1562 |
| Volume | 929Pages:438-451 |
| Subtype | Article |
| Abstract | The possible slowing down of cosmic acceleration was widely studied. However, judgment on this effect in different dark energy parameterizations was very ambiguous. Moreover, the reason of generating these uncertainties was still unknown. In the present paper, we analyze the derivative of deceleration parameter q' (z) using the Gaussian processes. This model-independent reconstruction suggests that no slowing down of acceleration is presented within 95% C.L. from the Union2.1 and JLA supernova data. However, q' (z) from the observational H(z) data is a little smaller than zero at 95% C.L., which indicates that future H(z) data may have a potential to test this effect. From the evolution of q' (z), we present an interesting constraint on the dark energy and observational data. The physical constraint clearly solves the problem of why some dark energy models cannot produce this effect in previous work. Comparison between the constraint and observational data also shows that most of current data are not in the allowed regions. This implies a reason of why current data cannot convincingly measure this effect. (c) 2018 The Author(s). Published by Elsevier B.V. |
| DOI | 10.1016/j.nuclphysb.2018.02.020 |
| WOS Keyword | COSMOLOGICAL PARAMETERS ; SUPERNOVAE ; CONSTANT |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Physics |
| WOS Subject | Physics, Particles & Fields |
| WOS ID | WOS:000427563700020 |
| ADS Bibcode | 2018NuPhB.929..438Z |
| AXRIV CODE | 1701 |
| Citation statistics |
Cited Times:9 [ADS]
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| Document Type | 期刊论文 |
| Identifier | http://ir.ihep.ac.cn/handle/311005/285747 |
| Collection | 粒子天体物理中心 |
| Affiliation | 中国科学院高能物理研究所 |
| First Author Affilication | Institute of High Energy |
| Recommended Citation GB/T 7714 | Zhang MJ,Zhang, MJ,Xia, JQ. Physical condition for the slowing down of cosmic acceleration[J]. NUCLEAR PHYSICS B,2018,929:438-451. |
| APA | 张明建,Zhang, MJ,&Xia, JQ.(2018).Physical condition for the slowing down of cosmic acceleration.NUCLEAR PHYSICS B,929,438-451. |
| MLA | 张明建,et al."Physical condition for the slowing down of cosmic acceleration".NUCLEAR PHYSICS B 929(2018):438-451. |
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