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Some studies on dark energy related problems
Wang, Fei; Yang, Jin Min; Wang, F , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
2006
发表期刊EUROPEAN PHYSICAL JOURNAL C
ISSN1434-6044
卷号45期号:3页码:815-818
摘要In this work we perform some studies related to dark energy. Firstly, we propose a dynamical approach to explain the dark energy contents of the universe. We assume that a massless scalar field couples to the Hubble parameter with some Planck-mass suppressed interactions. This scalar field develops a Hubble parameter-dependent (thus time-dependent) vacuum expectation value, which renders a time-independent relative density for the dark energy and thus can explain the coincidence of the dark energy density of the universe. Furthermore, we assume that the dark matter particle is metastable and decays very late into the dark energy scalar field. Such a conversion of matter to dark energy can give an explanation for the starting time of the accelerating expansion of the universe. Secondly, we introduce multiple Affleck-Dine fields to the landscape scenario of dark energy in order to have the required baryon-asymmetrical universe.
部门归属Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China; CCAST, World Lab, Beijing 100080, Peoples R China
关键词Cosmological Constant Supersymmetry Breaking Flat Directions Early Universe R-symmetry Q-ball Consequences Baryogenesis Matter Light
学科领域Physics
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收录类别SCI
WOS记录号WOS:000241559300019
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被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/6036
专题理论物理所1978-2010年知识产出
通讯作者Wang, F , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
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Wang, Fei,Yang, Jin Min,Wang, F , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China. Some studies on dark energy related problems[J]. EUROPEAN PHYSICAL JOURNAL C,2006,45(3):815-818.
APA Wang, Fei,Yang, Jin Min,&Wang, F , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.(2006).Some studies on dark energy related problems.EUROPEAN PHYSICAL JOURNAL C,45(3),815-818.
MLA Wang, Fei,et al."Some studies on dark energy related problems".EUROPEAN PHYSICAL JOURNAL C 45.3(2006):815-818.
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