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Modified gravity N-body code comparison project
文献类型：期刊论文
| 作者 | Winther, Hans A.1; Schmidt, Fabian2; Barreira, Alexandre3,4; Arnold, Christian5,6; Bose, Sownak3; Llinares, Claudio3,7; Baldi, Marco8,9,10; Falck, Bridget11; Hellwing, Wojciech A.3,12; Koyama, Kazuya11 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2015-12-21 |
| 卷号 | 454期号:4页码:4208-4234 |
| 关键词 | large-scale structure of Universe |
| 英文摘要 | Self-consistent N-body simulations of modified gravity models are a key ingredient to obtain rigorous constraints on deviations from general relativity using large-scale structure observations. This paper provides the first detailed comparison of the results of different N-body codes for the f(R), Dvali-Gabadadze-Porrati and Symmetron models, starting from the same initial conditions. We find that the fractional deviation of the matter power spectrum from Lambda cold dark matter agrees to better than 1 per cent up to k similar to 5-10 h Mpc(-1) between the different codes. These codes are thus able to meet the stringent accuracy requirements of upcoming observational surveys. All codes are also in good agreement in their results for the velocity divergence power spectrum, halo abundances and halo profiles. We also test the quasi-static limit, which is employed in most modified gravity N-body codes, for the Symmetron model for which the most significant non-static effects among the models considered are expected. We conclude that this limit is a very good approximation for all of the observables considered here. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000368001600068 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5470]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Univ Oxford, Astrophys, DWB, Oxford OX1 3RH, England 2.Max Planck Inst Astrophys, D-85748 Garching, Germany 3.Univ Durham, Inst Computat Cosmol, Dept Phys, Durham DH1 3LE, England 4.Univ Durham, Inst Particle Phys Phenomenol, Dept Phys, Durham DH1 3LE, England 5.Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany 6.Heidelberg Inst Theoret Studies, D-69118 Heidelberg, Germany 7.Univ Oslo, Inst Theoret Astrophys, N-0315 Oslo, Norway 8.Alma Mater Studiorum Univ Bologna, Dipartimento Fis & Astron, I-40127 Bologna, Italy 9.INAF Osservatorio Astron Bologna, I-40127 Bologna, Italy 10.Ist Nazl Fis Nucl, Sez Bologna, I-40127 Bologna, Italy |
| 推荐引用方式 GB/T 7714 | Winther, Hans A.,Schmidt, Fabian,Barreira, Alexandre,et al. Modified gravity N-body code comparison project[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,454(4):4208-4234. |
| APA | Winther, Hans A..,Schmidt, Fabian.,Barreira, Alexandre.,Arnold, Christian.,Bose, Sownak.,...&Zhao, Gong-Bo.(2015).Modified gravity N-body code comparison project.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,454(4),4208-4234. |
| MLA | Winther, Hans A.,et al."Modified gravity N-body code comparison project".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 454.4(2015):4208-4234. |
入库方式： OAI收割
来源：国家天文台
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