Generalized Brans-Dicke theories in light of evolving dark energy
文献类型：期刊论文
| 作者 | Zucca, Alex1; Pogosian, Levon1,2; Silvestri, Alessandra3; Wang, Yuting4; Zhao, Gong-Bo2,4,5 |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2020-02-13 |
| 卷号 | 101期号:4页码:17 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.101.043518 |
| 英文摘要 | The expansion history of the Universe reconstructed from a combination of recent data indicates a preference for a changing dark energy (DE) density. Moreover, the DE density appears to be increasing with cosmic time, with its equation of state being below -1 on average, and possibly crossing the so-called phantom divide. Scalar-tensor theories, in which the scalar field mediates a force between matter particles, offer a natural framework in which the effective DE equation of state can be less than -1 and cross the phantom barrier. We consider the generalized Brans-Dicke (GBD) class of scalar-tensor theories and reconstruct their Lagrangian given the effective DE density extracted from recent data. Then, given the reconstructed Lagrangian, we solve for the linear perturbations and investigate the characteristic signatures of these reconstructed GBD in the cosmological observables, such as the cosmic microwave background (CMB) anisotropy, the galaxy number counts, and their cross-correlations. In particular, we demonstrate that the integrated Sachs-Wolfe effect probed by the cross-correlation of CMB with the matter distribution can rule out scalar-tensor theories as the explanation of the observed DE dynamics independently from the laboratory and Solar System fifth force constraints. |
| WOS关键词 | BARYON ACOUSTIC-OSCILLATIONS ; SCALAR-TENSOR THEORY ; DR14 QUASAR SAMPLE ; PARAMETER CONSTRAINTS ; GRAVITY ; EQUATION ; GALAXIES ; UNIVERSE |
| 资助项目 | Natural Sciences and Engineering Research Council (NSERC) of Canada ; NWO ; Dutch Ministry of Education, Culture and Science (OCW) ; D-ITP consortium, a program of the NWO - OCW ; National Key Basic Research and Development Program of China[2018YFA0404503] ; NSFC[11720101004] ; NSFC[11673025] ; Nebula Talents Program of National Astronomy Observatories of China ; WestGrid ; Compute Canada |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000513219500003 |
| 出版者 | AMER PHYSICAL SOC |
| 资助机构 | Natural Sciences and Engineering Research Council (NSERC) of Canada ; Natural Sciences and Engineering Research Council (NSERC) of Canada ; NWO ; NWO ; Dutch Ministry of Education, Culture and Science (OCW) ; Dutch Ministry of Education, Culture and Science (OCW) ; D-ITP consortium, a program of the NWO - OCW ; D-ITP consortium, a program of the NWO - OCW ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; NSFC ; NSFC ; Nebula Talents Program of National Astronomy Observatories of China ; Nebula Talents Program of National Astronomy Observatories of China ; WestGrid ; WestGrid ; Compute Canada ; Compute Canada ; Natural Sciences and Engineering Research Council (NSERC) of Canada ; Natural Sciences and Engineering Research Council (NSERC) of Canada ; NWO ; NWO ; Dutch Ministry of Education, Culture and Science (OCW) ; Dutch Ministry of Education, Culture and Science (OCW) ; D-ITP consortium, a program of the NWO - OCW ; D-ITP consortium, a program of the NWO - OCW ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; NSFC ; NSFC ; Nebula Talents Program of National Astronomy Observatories of China ; Nebula Talents Program of National Astronomy Observatories of China ; WestGrid ; WestGrid ; Compute Canada ; Compute Canada ; Natural Sciences and Engineering Research Council (NSERC) of Canada ; Natural Sciences and Engineering Research Council (NSERC) of Canada ; NWO ; NWO ; Dutch Ministry of Education, Culture and Science (OCW) ; Dutch Ministry of Education, Culture and Science (OCW) ; D-ITP consortium, a program of the NWO - OCW ; D-ITP consortium, a program of the NWO - OCW ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; NSFC ; NSFC ; Nebula Talents Program of National Astronomy Observatories of China ; Nebula Talents Program of National Astronomy Observatories of China ; WestGrid ; WestGrid ; Compute Canada ; Compute Canada ; Natural Sciences and Engineering Research Council (NSERC) of Canada ; Natural Sciences and Engineering Research Council (NSERC) of Canada ; NWO ; NWO ; Dutch Ministry of Education, Culture and Science (OCW) ; Dutch Ministry of Education, Culture and Science (OCW) ; D-ITP consortium, a program of the NWO - OCW ; D-ITP consortium, a program of the NWO - OCW ; National Key Basic Research and Development Program of China ; National Key Basic Research and Development Program of China ; NSFC ; NSFC ; Nebula Talents Program of National Astronomy Observatories of China ; Nebula Talents Program of National Astronomy Observatories of China ; WestGrid ; WestGrid ; Compute Canada ; Compute Canada |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/54258]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Zucca, Alex |
| 作者单位 | 1.Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada 2.Univ Portsmouth, Inst Cosmol & Gravitat, Portsmouth PO1 3FX, Hants, England 3.Leiden Univ, Inst Lorentz, POB 9506, NL-2300 RA Leiden, Netherlands 4.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China 5.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zucca, Alex,Pogosian, Levon,Silvestri, Alessandra,et al. Generalized Brans-Dicke theories in light of evolving dark energy[J]. PHYSICAL REVIEW D,2020,101(4):17. |
| APA | Zucca, Alex,Pogosian, Levon,Silvestri, Alessandra,Wang, Yuting,&Zhao, Gong-Bo.(2020).Generalized Brans-Dicke theories in light of evolving dark energy.PHYSICAL REVIEW D,101(4),17. |
| MLA | Zucca, Alex,et al."Generalized Brans-Dicke theories in light of evolving dark energy".PHYSICAL REVIEW D 101.4(2020):17. |
入库方式： OAI收割
来源：国家天文台
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