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Cai, RG; Wang, SJ; Wang, SJ (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Dark matter superfluid and DBI dark energy
Source PublicationPHYSICAL REVIEW D
Language英语
AbstractIt 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.
2016
Volume93Issue:2Pages:23515
Subject AreaAstronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1103/PhysRevD.93.023515
Indexed BySCI
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences [XDB09000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB09000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB09000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB09000000]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/21796
Collection理论物理所科研产出_SCI论文
Corresponding AuthorCai, RG; Wang, SJ (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Cai, RG,Wang, SJ,Wang, SJ . Dark matter superfluid and DBI dark energy[J]. PHYSICAL REVIEW D,2016,93(2):23515.
APA Cai, RG,Wang, SJ,&Wang, SJ .(2016).Dark matter superfluid and DBI dark energy.PHYSICAL REVIEW D,93(2),23515.
MLA Cai, RG,et al."Dark matter superfluid and DBI dark energy".PHYSICAL REVIEW D 93.2(2016):23515.
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