ITP OpenIR  > 理论物理所2014年知识产出
Fractional-chaotic inflation in the lights of PLANCK and BICEP2
Gao, X; Li, TJ; Shukla, P; Gao, X (reprint author), Chinese Acad Sci, Kavli Inst Theoret Phys China KITPC, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
2014
发表期刊PHYSICS LETTERS B
ISSN0370-2693
卷号738期号:-页码:412-417
摘要In the lights of current BICEP2 observations accompanied with the PLANCK satellite results, it has been observed that the simple single field chaotic inflationary models provide a good agreement with their spectral index n(s) and large tensor-to-scalar ratio r(0.15 < r < 0.26). To explore the other simple models, we consider the fractional-chaotic inflationary potentials of the form V-0 phi(a/b) where a and bare relatively prime. We show that such kind of inflaton potentials can be realized elegantly in the supergravity framework with generalized shift symmetry and a nature bound a/b < 4 for consistency. Especially, for the number of e-folding from 50 to 60 and some a/b from 2 to 3, our predictions are nicely within at least 1 sigma region in the (r-n(s)) plane. We also present a systematic investigation of such chaotic inflationary models with fractional exponents to explore the possibilities for the enhancement in the magnitude of running of spectral index (alpha(ns)) beyond the simplistic models. Published by Elsevier B. V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/3.0/). Funded by SCOAP(3).
部门归属[Gao, Xin
关键词Supergravity
学科领域Physics
资助者Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [2010CB833000]; Compagnia di San Paolo contract "Modern Application of String Theory" (MAST) [TO-Call3-2012-0088] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [2010CB833000]; Compagnia di San Paolo contract "Modern Application of String Theory" (MAST) [TO-Call3-2012-0088] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [2010CB833000]; Compagnia di San Paolo contract "Modern Application of String Theory" (MAST) [TO-Call3-2012-0088] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [2010CB833000]; Compagnia di San Paolo contract "Modern Application of String Theory" (MAST) [TO-Call3-2012-0088]
DOI10.1016/j.physletb.2014.10.007
URL查看原文
收录类别SCI
语种英语
资助者Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [2010CB833000]; Compagnia di San Paolo contract "Modern Application of String Theory" (MAST) [TO-Call3-2012-0088] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [2010CB833000]; Compagnia di San Paolo contract "Modern Application of String Theory" (MAST) [TO-Call3-2012-0088] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [2010CB833000]; Compagnia di San Paolo contract "Modern Application of String Theory" (MAST) [TO-Call3-2012-0088] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; National Basic Research Program of China (973 Program) [2010CB833000]; Compagnia di San Paolo contract "Modern Application of String Theory" (MAST) [TO-Call3-2012-0088]
WOS记录号WOS:000344624900062
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被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15577
专题理论物理所2014年知识产出
通讯作者Gao, X (reprint author), Chinese Acad Sci, Kavli Inst Theoret Phys China KITPC, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
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Gao, X,Li, TJ,Shukla, P,et al. Fractional-chaotic inflation in the lights of PLANCK and BICEP2[J]. PHYSICS LETTERS B,2014,738(-):412-417.
APA Gao, X,Li, TJ,Shukla, P,&Gao, X .(2014).Fractional-chaotic inflation in the lights of PLANCK and BICEP2.PHYSICS LETTERS B,738(-),412-417.
MLA Gao, X,et al."Fractional-chaotic inflation in the lights of PLANCK and BICEP2".PHYSICS LETTERS B 738.-(2014):412-417.
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