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题名: Slow-roll and rapid-roll conditions in the spacelike vector field scenario
作者: Zhang, Yi
刊名: PHYSICAL REVIEW D
出版日期: 2009
卷号: 80, 期号:4, 页码:-
关键词: INFLATIONARY UNIVERSE ;  SUPERNOVAE ;  COSMOLOGY ;  FLATNESS ;  EQUATION ;  HORIZON
学科分类: Physics
通讯作者: Zhang, Y , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China
部门归属: [Zhang, Y] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Zhang, Y] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
英文摘要: In this note we derive the slow-roll and rapid-roll conditions for the minimally and nonminimally coupled spacelike vector fields. The function f(B(2)) represents the nonminimal coupling effect between vector fields and gravity, the f=0 case is the minimal coupling case. For a clear comparison with the scalar field, we define a new function F=+/- B(2)/12+f(B(2)), where B(2)=A(mu)A(mu), A(mu) is the "comoving" vector field. With reference to the slow-roll and rapid-roll conditions, we find the small-field model is more suitable than the large-field model in the minimally coupled vector field case. As a nonminimal coupling example, the F=0 case just has the same slow-roll conditions as the scalar fields.
资助者: Chinese Academy of Sciences; NSFC[10325525, 90403029]
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000269641400034
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5270
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:
Zhang, Yi. Slow-roll and rapid-roll conditions in the spacelike vector field scenario[J]. PHYSICAL REVIEW D,2009,80(4):-.
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