Nucleosynthesis and the variation of fundamental couplings -: art. no. 083504

被引：53
作者：
Müller, CM [1 ]
Schäfer, G [1 ]
Wetterich, C [1 ]
机构：
[1] Inst Theoret Phys, D-69120 Heidelberg, Germany
来源：
PHYSICAL REVIEW D | 2004年 / 70卷 / 08期
关键词：
D O I：
10.1103/PhysRevD.70.083504
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We determine the influence of a variation of the fundamental "constants" on the predicted helium abundance in Big Bang Nucleosynthesis. The analytic estimate is performed in two parts: the first step determines the dependence of the helium abundance on the nuclear physics parameters, while the second step relates those parameters to the fundamental couplings of particle physics. This procedure can incorporate in a flexible way the time variation of several couplings within a grand unified theory while keeping the nuclear physics computation separate from any GUT model dependence.
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页数：8
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