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题名: Is cosmological constant needed in Higgs inflation?
作者: Feng, CJ ;  Li, XZ
刊名: PHYSICS LETTERS B
出版日期: 2014
卷号: 738, 期号:-, 页码:254-257
关键词: BOSON ;  FLATNESS ;  UNIVERSE ;  HORIZON ;  LHC
学科分类: Physics
DOI: 10.1016/j.physletb.2014.09.057
通讯作者: Feng, CJ (reprint author), Shanghai Normal Univ, SUCA, 100 Guilin Rd, Shanghai 200234, Peoples R China.
部门归属: [Feng, Chao-Jun
英文摘要: The detection of B-mode shows a very powerful constraint to theoretical inflation models through the measurement of the tensor-to-scalar ratio r. Higgs boson is the most likely candidate of the inflaton field. But usually, Higgs inflation models predict a small value of r, which is not quite consistent with the recent results from BICEP2. In this paper, we explored whether a cosmological constant energy component is needed to improve the situation. And we found the answer is yes. For the so-called Higgs chaotic inflation model with a quadratic potential, it predicts r approximate to 0.2, n(s) approximate to 0.96 with e-folds number N approximate to 56, which is large enough to overcome the problems such as the horizon problem in the Big Bang cosmology. The required energy scale of the cosmological constant is roughly Lambda similar to (10(14) GeV)(2), which means a mechanism is still needed to solve the fine-tuning problem in the later time evolution of the universe, e.g. by introducing some dark energy component. (C) 2014 The Authors. Published by Elsevier B.V.
资助者: National Science Foundation of China [11105091, 11047138]; Shanghai Municipal Education Commission; Shanghai Education Development Foundation [12CG51]; National Education Foundation of China [2009312711004]; Shanghai Natural Science Foundation, China [10ZR1422000]; Chinese Ministry of Education [211059]; Shanghai Special Education Foundation [ssd10004]; 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:000344624900039
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15575
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Recommended Citation:
Feng, CJ,Li, XZ. Is cosmological constant needed in Higgs inflation?[J]. PHYSICS LETTERS B,2014,738(-):254-257.
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