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Ma, YZ; Huang, QG; Zhang, X; Ma, YZ (reprint author), Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada.
Confronting brane inflation with Planck and pre-Planck data
Source PublicationPHYSICAL REVIEW D
Language英语
KeywordFlatness Universe Horizon
AbstractIn 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.
2013
ISSN1550-7998
Volume87Issue:10Pages:103516
Subject AreaPhysics
Indexed BySCI
Funding OrganizationCITA 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] ; 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] ; 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] ; 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]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15360
Collection理论物理所科研产出_SCI期刊论文
Corresponding AuthorMa, YZ (reprint author), Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada.
Recommended Citation
GB/T 7714
Ma, YZ,Huang, QG,Zhang, X,et al. Confronting brane inflation with Planck and pre-Planck data[J]. PHYSICAL REVIEW D,2013,87(10):103516.
APA Ma, YZ,Huang, QG,Zhang, X,&Ma, YZ .(2013).Confronting brane inflation with Planck and pre-Planck data.PHYSICAL REVIEW D,87(10),103516.
MLA Ma, YZ,et al."Confronting brane inflation with Planck and pre-Planck data".PHYSICAL REVIEW D 87.10(2013):103516.
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