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题名: Conformal invariant cosmological perturbations via the covariant approach
作者: Li, MZ;  Mon, YC
刊名: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期: 2015
期号: 10, 页码:37
关键词: cosmological perturbation theory ;  modified gravity
学科分类: Astronomy & Astrophysics ;  Physics
DOI: http://dx.doi.org/10.1088/1475-7516/2015/10/037
通讯作者: Li, MZ (reprint author), Univ Sci & Technol China, Interdisciplinary Ctr Theoret Study, Hefei 230026, Anhui, Peoples R China.
文章类型: Article
英文摘要: It is known that some cosmological perturbations are conformal invariant. This facilitates the studies of perturbations within some gravitational theories alternative to general relativity, for example the scalar-tensor theory, because it is possible to do equivalent analysis in a certain frame in which the perturbation equations are simpler. In this paper we revisit the problem of conformal invariances of cosmological perturbations in terms of the covariant approach in which the perturbation variables have clear geometric and physical meanings. We show that with this approach the conformal invariant perturbations are easily identified.
类目[WOS]: Astronomy & Astrophysics ;  Physics, Particles & Fields
关键词[WOS]: INFLATIONARY UNIVERSE ;  GENERAL-RELATIVITY ;  MODEL
收录类别: SCI
项目资助者: NSFC [11422543] ;  Fundamental Research Funds for the Central Universities ;  Program for New Century Excellent Talents in University
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20844
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Recommended Citation:
Li, MZ,Mon, YC. Conformal invariant cosmological perturbations via the covariant approach[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2015(10):37.
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