Primordial trispectrum from entropy perturbations in multifield DBI model

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	Primordial trispectrum from entropy perturbations in multifield DBI model
	Gao, Xian; Hu, Bin; Gao, X , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, POB 2735, Beijing 100190, Peoples R China
刊名	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
	2009
期号	8 页码:-
关键词	Non-gaussianity K-inflation
ISSN号	1475-7516
英文摘要	We investigate the primordial trispectra of the general multifield DBI inflationary model. In contrast with the single field model, the entropic modes can source the curvature perturbations on the super horizon scales, so we calculate the contributions from the interaction of four entropic modes mediating one adiabatic mode to the trispectra, at the large transfer limit (T(RS) >> 1). We obtained the general form of the 4-point correlation functions, plotted the shape diagrams in two specific momenta configurations, "equilateral configuration" and "specialized configuration". Our figures showed that we can easily distinguish the two different momenta configurations.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000270036800012
公开日期	2012-08-02
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/5273]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Gao, X , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, POB 2735, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Gao, Xian,Hu, Bin,Gao, X , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, POB 2735, Beijing 100190, Peoples R China. Primordial trispectrum from entropy perturbations in multifield DBI model[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2009(8):-.
APA	Gao, Xian,Hu, Bin,&Gao, X , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, POB 2735, Beijing 100190, Peoples R China.(2009).Primordial trispectrum from entropy perturbations in multifield DBI model.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(8),-.
MLA	Gao, Xian,et al."Primordial trispectrum from entropy perturbations in multifield DBI model".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .8(2009):-.