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题名: Dirac-Born-Infeld inflation model with kinetic coupling to Einstein gravity
作者: Qiu, TT
刊名: PHYSICAL REVIEW D
出版日期: 2016
卷号: 93, 期号:12, 页码:123515
学科分类: Astronomy & Astrophysics; Physics
DOI: http://dx.doi.org/10.1103/PhysRevD.93.123515
通讯作者: Qiu, TT (reprint author), Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China. ;  Qiu, TT (reprint author), Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China. ;  Qiu, TT (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: In this paper, we study a new class of inflation models which generalize the Dirac-Born-Infeld (DBI) action with the addition of a nonminimal kinetic coupling (NKC) term. We dub this model as the new DBI inflation model. The NKC term does not bring a new dynamical degree of freedom, so the equations of motion remain of second order. However, with such coupling, the action is no longer linear with respect to the Einstein curvature term (R or G(mu nu)), which leads to a correction term of k(4) in the perturbations. The new DBI inflation model can be viewed as a theory beyond Horndeski. Without violating approximate scale invariance, such correction may lead to new effects on the inflationary spectra that can be tested by future observations.
类目[WOS]: Astronomy & Astrophysics ;  Physics, Particles & Fields
关键词[WOS]: NONMINIMAL DERIVATIVE COUPLINGS ;  FIELD-EQUATIONS ;  CONSTANT
收录类别: SCI
项目资助者: NSFC [11405069] ;  Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y4KF131CJ1] ;  Open Innovation Fund of Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University [QLPL2014P01]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21616
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Qiu, TT. Dirac-Born-Infeld inflation model with kinetic coupling to Einstein gravity[J]. PHYSICAL REVIEW D,2016,93(12):123515.
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