Screening corrections to electron capture rates and resulting constraints on primordial magnetic fields

Screening corrections to electron capture rates and resulting constraints on primordial magnetic fields
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对电子捕获率的筛选校正以及由此产生的对原始磁场的限制

DOI:
10.1103/physrevd.101.083010
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发表时间:
2020
期刊:
影响因子:
5
通讯作者:
Balantekin, A. Baha
Balantekin, A. Baha
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Luo, Yudong;Famiano, Michael A.;Kajino, Toshitaka;Kusakabe, Motohiko;Balantekin, A. Baha

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我们探讨屏蔽效应所产生的相对论磁化等离子体与应用大爆炸核合成(BBN)。屏蔽电势取决于等离子体中带电粒子的热力学,它会被磁场改变。我们专注于屏蔽对电子捕获相互作用的影响。考虑到修正BBN所产生的均匀的原始磁场(PMF),我们约束的时代,在该PMF的产生和它的强度在BBN。考虑到这种屏蔽校正的电子捕获率和使用最新的原始元素丰度的观测,我们还讨论了解决的问题的可能性低估的氘丰度。我们发现,对于某些PMF强度值,预测的D和丰度都与观测约束一致。
We explore screening effects arising from a relativistic magnetized plasma with applications to big bang nucleosynthesis (BBN). 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 underestimation of the deuterium abundance. We find for certain values of the PMF strength predicted D andabundances are both consistent with the observational constraints.
DOI: --
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