论文标题
来自原始氘的宇宙学模型中的新张力？
A new tension in the cosmological model from primordial deuterium?
论文作者
论文摘要
D（p，$γ）^3 $ He，核反应横截面和中子寿命的最新测量，以及从宇宙微波背景（CMB）分析中重新评估了宇宙学重量的丰度，呼吁更新大爆发型在大爆发核合成期间产生的光元素（BBN）的丰度预测。尽管在早期被认为是热爆炸模型的支柱，但BBN的限制功率主要取决于氘的丰度。我们指出了一种新的$ \simeq1.8σ$ - 重度密度或等效于D/H的丰度，一方面是从对光元素的原始丰度分析中推断出的值，另一方面是从CMB和Baryonic振荡数据的组合来看。这引起了人们对理论领域的关注，并使我们有机会在精确宇宙学的背景下重新评估BBN的状态。最后，本文介绍了BBN代码Primat的升级。
Recent measurements of the D(p,$γ)^3$He, nuclear reaction cross-section and of the neutron lifetime, along with the reevaluation of the cosmological baryon abundance from cosmic microwave background (CMB) analysis, call for an update of abundance predictions for light elements produced during the big-bang nucleosynthesis (BBN). While considered as a pillar of the hot big-bang model in its early days, BBN constraining power mostly rests on deuterium abundance. We point out a new $\simeq1.8σ$-tension on the baryonic density, or equivalently on the D/H abundance, between the value inferred on one hand from the analysis of the primordial abundances of light elements and, on the other hand, from the combination of CMB and baryonic oscillation data. This draws the attention on this sector of the theory and gives us the opportunity to reevaluate the status of BBN in the context of precision cosmology. Finally, this paper presents an upgrade of the BBN code PRIMAT.
