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题名: Some studies on dark energy related problems
作者: Wang, Fei ;  Yang, Jin Min
刊名: EUROPEAN PHYSICAL JOURNAL C
出版日期: 2006
卷号: 45, 期号:3, 页码:815-818
关键词: COSMOLOGICAL CONSTANT ;  SUPERSYMMETRY BREAKING ;  FLAT DIRECTIONS ;  EARLY UNIVERSE ;  R-SYMMETRY ;  Q-BALL ;  CONSEQUENCES ;  BARYOGENESIS ;  MATTER ;  LIGHT
学科分类: Physics
通讯作者: Wang, F , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
部门归属: Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China; CCAST, World Lab, Beijing 100080, Peoples R China
英文摘要: 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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000241559300019
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/6036
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Wang, Fei,Yang, Jin Min. Some studies on dark energy related problems[J]. EUROPEAN PHYSICAL JOURNAL C,2006,45(3):815-818.
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