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题名: Towards a realistic solution of the cosmological constant fine-tuning problem by Higgs inflation
作者: Feng, CJ ;  Li, XZ
刊名: PHYSICAL REVIEW D
出版日期: 2014
卷号: 90, 期号:10, 页码:103009
关键词: BOSON ;  FLATNESS ;  UNIVERSE ;  HORIZON ;  LHC
学科分类: Physics
DOI: 10.1103/PhysRevD.90.103009
通讯作者: Feng, CJ (reprint author), Shanghai Normal Univ, Shanghai United Ctr Astrophys, 100 Guilin Rd, Shanghai 200234, Peoples R China.
部门归属: [Feng, Chao-Jun
英文摘要: Why is the cosmological constant Lambda observed today so much smaller than the Planck scale, and why is the Universe accelerating at present? This is the so-called cosmological constant fine-tuning problem. In this paper, we find that this problem may be solved with the help of Higgs inflation by simply assuming a variable cosmological "constant" during the inflationary epoch. Meanwhile, it could predict a large tensor-to-scalar ratio r approximate to 0.20 and a large running of the spectral index n(s)' approximate to -0.028 with a red-tilt spectrum n(s) approximate to 0.96, as well as a big enough number of e-folds N approximate to 40, requiring that we solve the problems in big bang cosmology with the help of Lambda.
资助者: National Science Foundation of China [11105091, 11047138]; "Chen Guang" project of Shanghai Municipal Education Commission and Shanghai Education Development Foundation [12CG51]; National Education Foundation of China [2009312711004]; Shanghai Natural Science Foundation, China [10ZR1422000]; Key Project of Chinese Ministry of Education [211059]; Shanghai Special Education Foundation [ssd10004]; Program of Shanghai Normal University [DXL124]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000345743800002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15565
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Feng, CJ,Li, XZ. Towards a realistic solution of the cosmological constant fine-tuning problem by Higgs inflation[J]. PHYSICAL REVIEW D,2014,90(10):103009.
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