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题名: Hessence: a new view of quintom dark energy
作者: Wei, H ;  蔡荣根 ;  Zeng, DF
刊名: CLASSICAL AND QUANTUM GRAVITY
出版日期: 2005
卷号: 22, 期号:16, 页码:3189-3202
关键词: HIGH-REDSHIFT SUPERNOVAE ;  PROBE WMAP OBSERVATIONS ;  HUBBLE-SPACE-TELESCOPE ;  COSMOLOGICAL CONSTANT ;  SCALAR FIELD ;  Q-BALLS ;  QUINTESSENCE ;  CONSTRAINTS ;  MATTER ;  ACCELERATION
学科分类: Physics
通讯作者: Wei, H , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China; Baylor Univ, Dept Phys, CASPER, Waco, TX 76798 USA
英文摘要: Recently a lot of attention has been given to building a dark energy model in which the equation-of-state parameter w can cross the phantom divide w = -1. One of the models to realize crossing the phantom divide is called the quintom model, in which two real scalar fields appear, one is a normal scalar field and the other is a phantom-type scalar field. In this paper we propose a non-canonical complex scalar field as the dark energy, which we dub 'hessence', to implement crossing the phantom divide, in a similar sense as the quintom dark energy model. In the hessence model, the dark energy is described by a single field with an internal degree of freedom rather than two independent real scalar fields. However, the hessence is different from an ordinary complex scalar field, we show that the hessence can avoid the difficulty of the Q-ball formation which gives trouble to the spintessence model (an ordinary complex scalar field acts as the dark energy). Furthermore, we find that, by choosing a proper potential, the hessence could correspond to a Chaplygin gas at late,times.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000231919000009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13760
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:
Wei, H,Cai, RG,Zeng, DF. Hessence: a new view of quintom dark energy[J]. CLASSICAL AND QUANTUM GRAVITY,2005,22(16):3189-3202.
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