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题名: Large local non-Gaussianity from general ultra slow-roll inflation
作者: Huang, QG ;  Wang, Y
刊名: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
出版日期: 2013
期号: 6, 页码:35
关键词: UNIVERSE ;  FLATNESS ;  HORIZON
学科分类: Physics
通讯作者: Huang, QG (reprint author), Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Huang, Qing-Guo] Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, State Key Lab Theoret Phys, Beijing 100190, Peoples R China; [Wang, Yi] Univ Tokyo, Todai Inst Adv Study, Kavli Inst Phys & Math Universe WPI, Kashiwa, Chiba 2778583, Japan
英文摘要: We investigate the local non-Gaussian signatures of general ultra slow-roll inflation. The bispectrum and the trispectrum are calculated with general initial conditions. We show that the prediction of local non-Gaussianity is robust against generalizing the Bunch-Davies vacuum in such a model. Even though the bispectrum in this model is tightly constrained by Planck, the trispectrum can still be large enough to be detected by future cosmological observations potentially. We also show that the Suyama-Yamaguchi relation is saturated in this scenario.
资助者: Knowledge Innovation Program of Chinese Academy of Science; NSFC [10821504]; Kavli Institute for the Physics and Mathematics of the Universe (WPI)
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000321200100035
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15349
Appears in Collections:理论物理所2013年知识产出 _期刊论文

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Recommended Citation:
Huang, QG,Wang, Y. Large local non-Gaussianity from general ultra slow-roll inflation[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2013(6):35.
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