Non-Gaussian features from the inverse volume corrections in loop quantum cosmology

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	Non-Gaussian features from the inverse volume corrections in loop quantum cosmology
	Cai, RG; Guo, ZK
刊名	PHYSICAL REVIEW D
	2012
卷号	86 期号:4 页码:44020
关键词	BLACK-HOLE ENTROPY INFLATION GRAVITY GEOMETRY AREA CMB
ISSN号	1550-7998
通讯作者	Li, LF (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
英文摘要	In this paper we study the non-Gaussian features of the primordial fluctuations in loop quantum cosmology with the inverse volume corrections. The detailed analysis is performed in the single field slow-roll inflationary models. However, our results reflect the universal characteristics of bispectrum in loop quantum cosmology. The main corrections to the scalar bispectrum come from two aspects: one is the modifications to the standard Bunch-Davies vacuum, and the other is the corrections to the background dependent variables, such as slow-roll parameters. Our calculations show that the loop quantum corrections make f(NL) of the inflationary models increase 0.1%. Moreover, we find that two new shapes of non-Gaussian signal arise, which we name F-1 and F-2. The former gives a unique loop quantum feature, which is less correlated with the local, equilateral, and single types, while the latter is highly correlated with the local one.
学科主题	Physics
收录类别	SCI
资助信息	Chinese Academy of Science [2010CB832805, 2010CB833004]; National Natural Science Foundation of China [10821504, 10975168, 11175225, 11035008]
原文出处	http://dx.doi.org/10.1103/PhysRevD.86.044020
语种	英语
WOS记录号	WOS:000307503200006
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15050]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Cai, RG,Guo, ZK. Non-Gaussian features from the inverse volume corrections in loop quantum cosmology[J]. PHYSICAL REVIEW D,2012,86(4):44020.
APA	Cai, RG,&Guo, ZK.(2012).Non-Gaussian features from the inverse volume corrections in loop quantum cosmology.PHYSICAL REVIEW D,86(4),44020.
MLA	Cai, RG,et al."Non-Gaussian features from the inverse volume corrections in loop quantum cosmology".PHYSICAL REVIEW D 86.4(2012):44020.