Big Bang Nucleosynthesis Predictions for Precision Cosmology
Big Bang Nucleosynthesis Predictions for Precision Cosmology
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DOI：
10.1086/320251
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发表时间：
2000-10
期刊：
影响因子：
--
通讯作者：
S. Burles;K. Nollett;M. Turner
中科院分区：
文献类型：
--
作者：
S. Burles;K. Nollett;M. Turner
原始氘丰度的测定开启了大爆炸核合成的精确时代，使得精确的预测比以往任何时候都更加重要。我们提出了新的，更精确的预测轻元素丰度及其误差矩阵的解析形式。利用我们的预测和原始氘丰度，我们推断重子密度为ΩBh2 = 0.020 ± 0.002（95%置信水平），并且除了将D燃烧成3He之外，没有发现恒星产生（或毁灭）3He的证据。关于4He和7Li的结论目前取决于测量中可能存在的系统误差。
The determination of the primeval deuterium abundance has opened a precision era in big bang nucleosynthesis, making accurate predictions more important than ever before. We present in analytic form new, more precise predictions for the light-element abundances and their error matrix. Using our predictions and the primeval deuterium abundance, we infer a baryon density of ΩBh2 = 0.020 ± 0.002 (95% confidence level) and find no evidence for stellar production (or destruction) of 3He beyond burning D into 3He. Conclusions about 4He and 7Li currently hinge on possible systematic errors in their measurements.