Confronting brane inflation with Planck and pre-Planck data

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	Confronting brane inflation with Planck and pre-Planck data
	Huang, QG
刊名	PHYSICAL REVIEW D
	2013
卷号	87 期号:10 页码:103516
关键词	FLATNESS UNIVERSE HORIZON
ISSN号	1550-7998
通讯作者	Ma, YZ (reprint author), Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada.
英文摘要	In this paper, we compare brane inflation models with the Planck data and the pre-Planck data (which combines WAMP, ACT, SPT, BAO and H-0 data). The Planck data prefer a spectral index less than unity at more than 5 sigma confidence level, and a running of the spectral index at around 2 sigma confidence level. We find that the KKLMMT model can survive at the level of 2 sigma only if the parameter beta (the conformal coupling between the Hubble parameter and the inflaton) is less than O(10(-3)), which indicates a certain level of fine-tuning. The IR DBI model can provide a slightly larger negative running of spectral index and red tilt, but in order to be consistent with the non-Gaussianity constraints from Planck, its parameter also needs fine-tuning at some level.
学科主题	Physics
收录类别	SCI
资助信息	CITA National Fellowship; Natural Science and Engineering Research Council of Canada; Knowledge Innovation Program of the Chinese Academy of Science; National Natural Science Foundation of China [10821504, 10705041, 10975032, 11175042]; National Ministry of Education of China [NCET-09-0276, N100505001, N120505003]
原文出处	http://dx.doi.org/10.1103/PhysRevD.87.103516
语种	英语
WOS记录号	WOS:000319254500003
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15360]
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	Huang, QG. Confronting brane inflation with Planck and pre-Planck data[J]. PHYSICAL REVIEW D,2013,87(10):103516.
APA	Huang, QG.(2013).Confronting brane inflation with Planck and pre-Planck data.PHYSICAL REVIEW D,87(10),103516.
MLA	Huang, QG."Confronting brane inflation with Planck and pre-Planck data".PHYSICAL REVIEW D 87.10(2013):103516.