CHAM: a fast algorithm of modelling non-linear matter power spectrum in the sCreened HAlo Model
文献类型：期刊论文
| 作者 | Cai, RG ; Hu, B; Liu, XW
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2018 |
| 卷号 | 476期号:1页码:L65-L68 |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnrasl/sly032 |
| 英文摘要 | We present a fast numerical screened halo model algorithm (CHAM, which stands for the sCreened HAlo Model) for modelling non-linear power spectrum for the alternative models to Lambda cold dark matter. This method has three obvious advantages. First of all, it is not being restricted to a specific dark energy/modified gravity model. In principle, all of the screened scalar-tensor theories can be applied. Secondly, the least assumptions are made in the calculation. Hence, the physical picture is very easily understandable. Thirdly, it is very predictable and does not rely on the calibration from N-body simulation. As an example, we show the case of the Hu-Sawicki f(R) gravity. In this case, the typical CPU time with the current parallel PYTHON script (eight threads) is roughly within 10 min. The resulting spectra are in a good agreement with N-body data within a few percentage accuracy up to k similar to 1 h Mpc(-1). |
| 学科主题 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/22909]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China 2.Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China 3.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, RG,Hu, B,Liu, XW. CHAM: a fast algorithm of modelling non-linear matter power spectrum in the sCreened HAlo Model[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,476(1):L65-L68. |
| APA | Cai, RG,Hu, B,&Liu, XW.(2018).CHAM: a fast algorithm of modelling non-linear matter power spectrum in the sCreened HAlo Model.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,476(1),L65-L68. |
| MLA | Cai, RG,et al."CHAM: a fast algorithm of modelling non-linear matter power spectrum in the sCreened HAlo Model".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 476.1(2018):L65-L68. |
入库方式： OAI收割
来源：理论物理研究所
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