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Remarks on Definitions of Perturbation in General Relativity
He Ping; He, P , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100080, Peoples R China
2009
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
ISSN0253-6102
卷号51期号:2页码:375-377
摘要There are two kinds of definitions of perturbation of physical quantities in the framework of general relativity: one is direct, the other is geometrical. Correspondingly, there are two types of gauge transformation related with these two definitions. The passive approach is based on the property of general covariance, and the active one is through the action of Lie-derivative. Although under a proper coordinate choice, the two approaches seem to agree with each other, they are different in nature. The geometrical definition of relativistic perturbation and the active approach for gauge transformation are more rigorous in mathematics and less confusing in physical explanation. The direct definition, however, seems to be plagued with difficulties in physical meaning, and the passive approach is more awkward to use, especially for high-order gauge transformations.
部门归属Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100080, Peoples R China
关键词Cosmological Perturbations Gauge Transformations Invariance 2nd-order Spacetime Universe
学科领域Physics
资助者Scientific Research Foundation for the Returned Overseas Chinese Scholars; Ministry of Education; Chinese Academy of Sciences[KJCX3-SYW-N2.] ; Scientific Research Foundation for the Returned Overseas Chinese Scholars; Ministry of Education; Chinese Academy of Sciences[KJCX3-SYW-N2.] ; Scientific Research Foundation for the Returned Overseas Chinese Scholars; Ministry of Education; Chinese Academy of Sciences[KJCX3-SYW-N2.] ; Scientific Research Foundation for the Returned Overseas Chinese Scholars; Ministry of Education; Chinese Academy of Sciences[KJCX3-SYW-N2.]
收录类别SCI
资助者Scientific Research Foundation for the Returned Overseas Chinese Scholars; Ministry of Education; Chinese Academy of Sciences[KJCX3-SYW-N2.] ; Scientific Research Foundation for the Returned Overseas Chinese Scholars; Ministry of Education; Chinese Academy of Sciences[KJCX3-SYW-N2.] ; Scientific Research Foundation for the Returned Overseas Chinese Scholars; Ministry of Education; Chinese Academy of Sciences[KJCX3-SYW-N2.] ; Scientific Research Foundation for the Returned Overseas Chinese Scholars; Ministry of Education; Chinese Academy of Sciences[KJCX3-SYW-N2.]
WOS记录号WOS:000263891900037
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5397
专题理论物理所1978-2010年知识产出
通讯作者He, P , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100080, Peoples R China
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He Ping,He, P , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100080, Peoples R China. Remarks on Definitions of Perturbation in General Relativity[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2009,51(2):375-377.
APA He Ping,&He, P , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100080, Peoples R China.(2009).Remarks on Definitions of Perturbation in General Relativity.COMMUNICATIONS IN THEORETICAL PHYSICS,51(2),375-377.
MLA He Ping,et al."Remarks on Definitions of Perturbation in General Relativity".COMMUNICATIONS IN THEORETICAL PHYSICS 51.2(2009):375-377.
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