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题名: Thermal leptogenesis in a model with mass varying neutrinos
作者: Bi, XJ ;  Gu, PH ;  Wang, XL ;  Zhang, XM
刊名: PHYSICAL REVIEW D
出版日期: 2004
卷号: 69, 期号:11, 页码:-
关键词: LEPTON-NUMBER VIOLATION ;  HEAVY MAJORANA NEUTRINOS ;  PROBE WMAP OBSERVATIONS ;  WEINBERG-SALAM THEORY ;  ELECTROWEAK BARYOGENESIS ;  NON-CONSERVATION ;  CP VIOLATION ;  SUPER-KAMIOKANDE ;  BARYON ASYMMETRY ;  EARLY UNIVERSE
学科分类: Physics
通讯作者: Bi, XJ , Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100039, Peoples R China.
部门归属: Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: In this paper we consider the possibility of the neutrino mass varying during the evolution of the Universe and study its implications on leptogenesis. Specifically, we take the minimal seesaw model of neutrino masses and introduce a coupling between the right-handed neutrinos and the dark energy scalar field, the quintessence. In our model, the right-handed neutrino masses change as the quintessence evolves. We then examine in detail the parameter space of this model allowed by the observed baryon number asymmetry. Our results show that it is possible to lower the reheating temperature in this scenario in comparison with the case that the neutrino masses are unchanged, which helps solve the gravitino problem. Furthermore, a degenerate neutrino mass pattern with m(i) larger than the upper limit given in the minimal leptogenesis scenario is permitted.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000222502900017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14070
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Bi, XJ,Gu, PH,Wang, XL,et al. Thermal leptogenesis in a model with mass varying neutrinos[J]. PHYSICAL REVIEW D,2004,69(11):-.
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