Effects of quantum fluctuations of metric on the universe

doi:http://dx.doi.org/10.1016/j.dark.2016.04.007

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	Effects of quantum fluctuations of metric on the universe
	Yang, RJ
刊名	PHYSICS OF THE DARK UNIVERSE
	2016
卷号	13 页码:87-91
关键词	Modified gravity INDUCED PARTICLE-PRODUCTION Inflation MODIFIED GRAVITY Dark energy NUCLEOSYNTHESIS Cosmology MATTER PROBE
DOI	http://dx.doi.org/10.1016/j.dark.2016.04.007
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.
学科主题	Astronomy & Astrophysics
语种	英语
资助机构	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
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/23124]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Hebei Key Lab Opt Elect Informat & Mat, Baoding, Peoples R China 2.Hebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Yang, RJ. Effects of quantum fluctuations of metric on the universe[J]. PHYSICS OF THE DARK UNIVERSE,2016,13:87-91.
APA	Yang, RJ.(2016).Effects of quantum fluctuations of metric on the universe.PHYSICS OF THE DARK UNIVERSE,13,87-91.
MLA	Yang, RJ."Effects of quantum fluctuations of metric on the universe".PHYSICS OF THE DARK UNIVERSE 13(2016):87-91.