中国科学院理论物理研究所机构知识库
Advanced  
ITP OpenIR  > 理论物理所2014年知识产出  > 期刊论文
题名: Curvaton with nonminimal derivative coupling to gravity: Full perturbation analysis
作者: Feng, KX ;  Qiu, TT
刊名: PHYSICAL REVIEW D
出版日期: 2014
卷号: 90, 期号:12, 页码:123508
关键词: NON-GAUSSIANITY ;  INFLATION ;  COSMOLOGY ;  SCENARIO ;  SCALAR
学科分类: Physics
DOI: 10.1103/PhysRevD.90.123508
通讯作者: Feng, KX (reprint author), Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China.
部门归属: [Feng, Kaixi] Univ Chinese Acad Sci, Sch Phys, Beijing 100049, Peoples R China
英文摘要: In our previous paper [K. Feng, T. Qiu, and Y.-S. Piao, Phys. Lett. B 729, 99 (2014)], we have shown a curvaton model where the curvaton has a nonminimal derivative coupling to gravity. Such a coupling could cause scale invariance of the perturbations for a wide range of constant values of the equation of state of the cosmic background at the early time. In this paper, we continue our study by fully analyzing its perturbations up to the third order. Apart from the usual 2-point correlation function that have already been calculated in Feng, Qiu, and Piao [Phys. Lett. B 729, 99 (2014)], we also take into account the 3-point correlation functions, including the pure scalar part, the pure tensor part, and the cross-correlations between scalar and tensor perturbation modes. We find that for the pure scalar part, the 3-point correlation functions can generate non-Gaussianities that fit the PLANCK data very well. For the pure tensor and mixed parts, the shape functions have peaks at squeezed and equilateral limits, respectively, responsible for sizable f(NL)(sqz) and f(NL)(eql), which could be tested by the future observational data.
资助者: State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y4KF131CJ1]; NSFC [11222546]; National Basic Research Program of China [2010CB832804]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000346830000002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15549
Appears in Collections:理论物理所2014年知识产出 _期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Curvaton with nonminimal derivative coupling to gravity: Full perturbation analysis.pdf(4839KB)----开放获取View Download

Recommended Citation:
Feng, KX,Qiu, TT. Curvaton with nonminimal derivative coupling to gravity: Full perturbation analysis[J]. PHYSICAL REVIEW D,2014,90(12):123508.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Feng, KX]'s Articles
 [Qiu, TT]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Feng, KX]‘s Articles
 [Qiu, TT]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
文件名: Curvaton with nonminimal derivative coupling to gravity: Full perturbation analysis.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院理论物理研究所 - Feedback
Powered by CSpace