Searching for scalar gravitational interactions in current and future cosmological data
文献类型：期刊论文
| 作者 | Hojjati, Alireza1,2; Plahn, Aaron2; Zucca, Alex2; Pogosian, Levon2; Brax, Philippe3; Davis, Anne-Christine4; Zhao, Gong-Bo5,6
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| 刊名 | PHYSICAL REVIEW D
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| 出版日期 | 2016-02-17 |
| 卷号 | 93期号:4 |
| 英文摘要 | Modified gravity theories often contain a scalar field of gravitational strength which interacts with matter. We examine constraints on the range and the coupling strength of a scalar gravitational degree of freedom using a subset of current data that can be safely analyzed within the linear perturbation theory. Using a model-independent implementation of scalar-tensor theories in MGCAMB in terms of two functions of the scale factor describing the mass and the coupling of the scalar degree of freedom, we derive constraints on the f(R), generalized chameleon, symmetron and dilaton models. Since most of the large scale structure data available today is from relatively low redshifts, only a limited range of observed scales is in the linear regime, leading to relatively weak constraints. We then perform a forecast for a future large scale structure survey, such as the Large Synoptic Survey Telescope (LSST), which will map a significant volume at higher redshifts, and show that it will produce much stronger constraints on scalar interactions in specific models. We also perform a principal component analysis and find that future surveys should be able to provide tight constraints on several eigenmodes of the scalar mass evolution. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000370247800005 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5441]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada 2.Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada 3.CNRS, Inst Phys Theor, CEA, IPhT,URA 230, F-91191 Gif Sur Yvette, France 4.Univ Cambridge, Ctr Math Sci, DAMTP, Wilberforce Rd, Cambridge CB3 0WA, England 5.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 6.Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England |
| 推荐引用方式 GB/T 7714 | Hojjati, Alireza,Plahn, Aaron,Zucca, Alex,et al. Searching for scalar gravitational interactions in current and future cosmological data[J]. PHYSICAL REVIEW D,2016,93(4). |
| APA | Hojjati, Alireza.,Plahn, Aaron.,Zucca, Alex.,Pogosian, Levon.,Brax, Philippe.,...&Zhao, Gong-Bo.(2016).Searching for scalar gravitational interactions in current and future cosmological data.PHYSICAL REVIEW D,93(4). |
| MLA | Hojjati, Alireza,et al."Searching for scalar gravitational interactions in current and future cosmological data".PHYSICAL REVIEW D 93.4(2016). |
入库方式： OAI收割
来源：国家天文台
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