论文标题
对电子捕获率的筛选校正和对原始磁场的限制
Screening corrections to Electron Capture Rates and resulting constraints on Primordial Magnetic Fields
论文作者
论文摘要
我们探讨了由相对论磁化等离子体引起的筛选效应，并应用于大爆炸核合成（BBN）。 ％尤其是，由于其较小的磁矩，可以通过Landau量化轻松量化电子和正电子的能量。磁场改变了血浆中带电颗粒的热力学的筛选势。我们专注于筛选对电子捕获相互作用的影响。考虑到由同质原始磁场（PMF）产生的BBN校正，我们限制了PMF的产生的时期及其在BBN期间的强度。考虑到对电子捕获率的这种筛选校正，并使用原始元素丰度的最新观察结果，我们还讨论了解决依然估计不足的可能性的可能性。我们发现，对于PMF强度的某些值，预测的D和$^4 $ HE的丰度都与观察性约束一致。
We explore screening effects arising from a relativistic magnetized plasma with applications to Big Bang nucleosynthesis (BBN). %Specifically, due to their small magnetic moments, energies of electrons and positrons can be easily quantized via Landau quantization. The screening potential which depends on the thermodynamics of charged particles in the plasma is altered by the magnetic field. We focus on the impact of screening on the electron capture interaction. Taking into account the correction in BBN arising from a homogeneous primordial magnetic field (PMF), we constrain the epoch at which the PMF was generated and its strength during BBN. Considering such screening corrections to the electron capture rates and using up-to-date observations of primordial elemental abundances, we also discuss the possibility of solving the problem of under-estimation of the deuterium abundance. We find for certain values of the PMF strength predicted D and $^4$He abundances are both consistent with the observational constraints.
