Revisiting puffy dark matter with novel insights: partial wave analysis
文献类型：期刊论文
| 作者 | Wang, Wenyu; Xu, Wu-Long; Yang, Jin Min1,2; Zhu, Bin3 |
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2023 |
| 期号 | 6页码:103 |
| ISSN号 | 1029-8479 |
| 关键词 | GALAXIES |
| DOI | 10.1007/JHEP06(2023)103 |
| 英文摘要 | We present a comprehensive study on the self-interaction cross-section of puffy dark matter (DM) particles, which have a significant intrinsic size compared to their Compton wavelength. For such puffy DM self-interaction cross-section in the resonant and classical regimes, our study demonstrates the significance of the Yukawa potential and the necessity of partial wave analysis: (i) Due to the finite-size effect of puffy DM particles, the new Yukawa potential of puffy DM is found to enlarge the Born-effective regime for the self-interaction cross-section, compared with the point-like DM; (ii) Our partial wave analysis shows that depending on the value of the ratio between R-chi (radius of a puffy DM particle) and 1/m(phi) (force range), the three regimes (Born-effective, resonant and classical) for puffy DM self-interaction cross-section can be very different from the point-like DM; (iii) We find that to solve the small-scale anomalies via self-interacting puffy DM, the Born-effective and the resonant regimes exist for dwarf galaxies, while for the cluster and Milky Way galaxy the non-Born regime is necessary. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/28069]  |
| 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.Beijing Univ Technol, Fac Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 4.Yantai Univ, Dept Phys, Yantai 264005, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Wenyu,Xu, Wu-Long,Yang, Jin Min,et al. Revisiting puffy dark matter with novel insights: partial wave analysis[J]. JOURNAL OF HIGH ENERGY PHYSICS,2023(6):103. |
| APA | Wang, Wenyu,Xu, Wu-Long,Yang, Jin Min,&Zhu, Bin.(2023).Revisiting puffy dark matter with novel insights: partial wave analysis.JOURNAL OF HIGH ENERGY PHYSICS(6),103. |
| MLA | Wang, Wenyu,et al."Revisiting puffy dark matter with novel insights: partial wave analysis".JOURNAL OF HIGH ENERGY PHYSICS .6(2023):103. |
入库方式： OAI收割
来源：理论物理研究所
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