论文标题
来自离散计的Baryon减去Lepton的宇宙锂溶液
Cosmological Lithium Solution from Discrete Gauged Baryon Minus Lepton Number
论文作者
论文摘要
宇宙学的锂问题 - 该理论预测了原始丰度远远高于观察到的价值 - 抗体学家，核物理学家和天文学家的数十年尝试都可以扎根系统学。我们在通过计量的Baryon减去Lepton编号扩展的标准模型的设置中重新考虑了此问题，我们会自发地通过电荷$ 2 N_C N_G $打破标量。来自这种破裂的宇宙弦可以支持将三个质子转换为三个正电子的相互作用，我们认为“电' - 磁性”相互作用可以使这个过程以callan-rubakov效应的类似物放大，强规横截面。我们建议这样的宇宙字符串已经瓦解了原始锂核的$ \ MATHCAL {O}（1）$，并列出了该方案成功的必要条件。据我们所知，这是第一个具有微物理理由的新物理机制，其丰富的锂在大爆炸核合成后进行了修改。
The cosmological lithium problem -- that theory predicts a primordial abundance far higher than the observed value -- has resisted decades of attempts by cosmologists, nuclear physicists, and astronomers alike to root out systematics. We reconsider this problem in the setting of the Standard Model extended by gauged baryon minus lepton number, which we spontaneously break by a scalar with charge $2 N_c N_g$. Cosmic strings from this breaking can support interactions converting three protons into three positrons, and we argue that an `electric'-`magnetic' interplay can give this process an amplified, strong-scale cross-section in an analogue of the Callan-Rubakov effect. We suggest such cosmic strings have disintegrated $\mathcal{O}(1)$ of the primordial lithium nuclei, and lay out what is necessary for this scheme to succeed. To our knowledge this is the first new physics mechanism with microphysical justification for the abundance of lithium uniquely to be modified after Big Bang Nucleosynthesis.
