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题名: Dynamical scalar degree of freedom in Horcava-Lifshitz gravity
作者: 蔡荣根 ;  Hu, Bin ;  Zhang, Hong-Bo
刊名: PHYSICAL REVIEW D
出版日期: 2009
卷号: 80, 期号:4, 页码:-
关键词: MASSIVE GAUGE-THEORIES ;  PHYSICS
学科分类: Physics
通讯作者: Cai, RG , Chinese Acad Sci, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China
部门归属: [Cai, RG; Hu, B; Zhang, HB] Chinese Acad Sci, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China; [Zhang, HB] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
英文摘要: We investigate the linear cosmological perturbations of Horcava-Lifshitz gravity in a Friedmann-Robertson-Walker universe without any matter. Our results show that a new gauge-invariant dynamical scalar mode emerges, due to the gauge transformation under the "foliation-preserving" diffeomorphism and "projectability condition," and it can produce a scale invariant power spectrum. In the infrared regime with lambda=1, the dynamical scalar degree of freedom turns to be a nondynamical one at the linear order level.
资助者: Chinese Academy of Sciences[KJCX3-SYW-N2]; NSFC[10821504, 10525060]
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000269641400001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5266
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:
Cai, Rong-Gen,Hu, Bin,Zhang, Hong-Bo. Dynamical scalar degree of freedom in Horcava-Lifshitz gravity[J]. PHYSICAL REVIEW D,2009,80(4):-.
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