Quintessence and spontaneous leptogenesis

被引：79

作者：

Li, MZ ^{[1
]}

Wang, XL ^{[1
]}

Feng, B ^{[1
]}

Zhang, XM ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China

来源：

PHYSICAL REVIEW D | 2002年 / 65卷 / 10期

关键词：

D O I：

10.1103/PhysRevD.65.103511

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We propose in this paper a scenario of spontaneous baryogenesis in cosmological models of quintessence by introducing a derivative coupling of the quintessence scalar Q to the baryon current J(B)(mu) or the current of the baryon number minus lepton number J(B-L)(mu). We find that with a dimension-5 operator partial derivative(mu)QJ(B-L)(mu) suppressed by the Planck mass M-pl or the grand unification scale M-GUT, baryon number asymmetry n(B)/ssimilar to10(-10) can be naturally explained via leptogenesis. We study also the isocurvature baryon number fluctuation generated in our model.

引用

页数：5

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