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题名: Dark matter superfluid and DBI dark energy
作者: Cai, RG ;  Wang, SJ
刊名: PHYSICAL REVIEW D
出版日期: 2016
卷号: 93, 期号:2, 页码:23515
学科分类: Astronomy & Astrophysics; Physics
DOI: http://dx.doi.org/10.1103/PhysRevD.93.023515
通讯作者: Cai, RG ;  Wang, SJ (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: It was shown recently that, without jeopardizing the success of the. cold dark matter model on cosmic scales, the modified Newtonian dynamics (MOND) can be derived as an emergent phenomenon when axionlike dark matter particles condense into superfluid on the galactic scales. We propose in this paper a Dirac-Born-Infeld (DBI) scalar field conformally coupled to the matter components. To maintain the success of MOND phenomenon of dark matter superfluid on the galactic scales, the fifth force introduced by the DBI scalar should be screened on the galactic scales. It turns out that the screening effect naturally leads to a simple explanation for a longstanding puzzle that the MOND critical acceleration coincides with present Hubble scale. This galactic coincidence problem is solved, provided that the screened DBI scalar also plays the role of dark energy on the cosmic scales.
类目[WOS]: Astronomy & Astrophysics ;  Physics, Particles & Fields
关键词[WOS]: TULLY-FISHER RELATION ;  NEWTONIAN DYNAMICS ;  GALAXIES ;  CONSTANT ;  MASS ;  MOND
收录类别: SCI
项目资助者: Strategic Priority Research Program of the Chinese Academy of Sciences [XDB09000000]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21796
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Cai, RG,Wang, SJ. Dark matter superfluid and DBI dark energy[J]. PHYSICAL REVIEW D,2016,93(2):23515.
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