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题名: Effects of quantum fluctuations of metric on the universe
作者: Yang, RJ
刊名: PHYSICS OF THE DARK UNIVERSE
出版日期: 2016
卷号: 13, 页码:87-91
关键词: Modified gravity ;  Inflation ;  Dark energy ;  Cosmology
学科分类: Astronomy & Astrophysics
DOI: http://dx.doi.org/10.1016/j.dark.2016.04.007
通讯作者: Yang, RJ (reprint author), Hebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R China.
文章类型: Article
英文摘要: We consider a model of modified gravity from the nonperturbative quantization of a metric. We obtain the modified gravitational field equations and the modified conservational equations. We apply it to the FLRW spacetime and find that due to the quantum fluctuations a bounce universe can be obtained and a decelerated expansion can also possibly be obtained in a dark energy dominated epoch. We also discuss the effects of quantum fluctuations on inflation parameters (such as slow-roll parameters, spectral index, and the spectrum of the primordial curvature perturbation) and find values of parameters in the comparing the predictions of inflation can also work to drive the current epoch of acceleration. We obtain the constraints on the parameter of the theory from the observation of the big bang nucleosynthesis. (C) 2016 Elsevier B.V. All rights reserved.
类目[WOS]: Astronomy & Astrophysics
关键词[WOS]: INDUCED PARTICLE-PRODUCTION ;  MODIFIED GRAVITY ;  NUCLEOSYNTHESIS ;  MATTER ;  PROBE
收录类别: SCI
项目资助者: National Natural Science Foundation of China [11147028, 11273010] ;  Hebei Provincial Natural Science Foundation of China [A2014201068] ;  Outstanding Youth Fund of Hebei University [2012JQ02] ;  Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y4KF101CJ1] ;  Midwest universities comprehensive strength promotion project
语种: 英语
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内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21550
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Yang, RJ. Effects of quantum fluctuations of metric on the universe[J]. PHYSICS OF THE DARK UNIVERSE,2016,13:87-91.
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