Model-independent dark energy equation of state from unanchored baryon acoustic oscillations
文献类型：期刊论文
| 作者 | Evslin, Jarah |
| 刊名 | PHYSICS OF THE DARK UNIVERSE
 |
| 出版日期 | 2016-09-01 |
| 卷号 | 13页码:126-131 |
| 关键词 | Dark energy Baryon acoustic oscillations BOSS survey |
| ISSN号 | 2212-6864 |
| DOI | 10.1016/j.dark.2016.06.001 |
| 英文摘要 | Ratios of line of sight baryon acoustic oscillation (BAO) peaks at two redshifts only depend upon the average dark energy equation of states between those redshifts, as the dependence on anchors such as the BAO scale or the Hubble constant is canceled in a ratio. As a result, BAO ratios provide a probe of dark energy which is independent of both the cosmic distance ladder and the early evolution of universe. In this note, we use ratios to demonstrate that the known tension between the Lyman alpha forest BAO measurement and other probes arises entirely from recent (0.57 < z < 2.34) cosmological expansion. Using ratios of the line of sight Lyman alpha forest and BOSS CMASS BAO scales, we show that there is already more than 3 sigma tension with the standard Lambda CDM cosmological model which implies that either (i) The BOSS Lyman alpha forest measurement of the Hubble parameter was too low as a result of a statistical fluctuation or systematic error or else (ii) the dark energy equation of state falls steeply at high redshift. (C) 2016 Elsevier B.V. All rights reserved. |
| WOS关键词 | COSMIC ACCELERATION ; MODIFIED GRAVITY ; EVOLUTION ; QUASARS ; FOREST |
| 资助项目 | NSFC[11375201] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000384024800012 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | NSFC |
| 源URL | [http://119.78.100.186/handle/113462/43282]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Evslin, Jarah |
| 作者单位 | Chinese Acad Sci, Inst Modern Phys, NanChangLu 509, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Evslin, Jarah. Model-independent dark energy equation of state from unanchored baryon acoustic oscillations[J]. PHYSICS OF THE DARK UNIVERSE,2016,13:126-131. |
| APA | Evslin, Jarah.(2016).Model-independent dark energy equation of state from unanchored baryon acoustic oscillations.PHYSICS OF THE DARK UNIVERSE,13,126-131. |
| MLA | Evslin, Jarah."Model-independent dark energy equation of state from unanchored baryon acoustic oscillations".PHYSICS OF THE DARK UNIVERSE 13(2016):126-131. |
入库方式： OAI收割
来源：近代物理研究所
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