Dark matter superfluid and DBI dark energy

doi:http://dx.doi.org/10.1103/PhysRevD.93.023515

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	Dark matter superfluid and DBI dark energy
	Cai, RG; Wang, SJ; Wang, SJ (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
刊名	PHYSICAL REVIEW D
	2016
卷号	93 期号:2 页码:23515
DOI	http://dx.doi.org/10.1103/PhysRevD.93.023515
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.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/21796]
专题	理论物理研究所_理论物理所1978-2010年知识产出
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.
推荐引用方式 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.