Abstract During the era of primordial nucleosynthesis the background of non-equilibrium antineutrinos is being formed due to decays of neutrons and nuclei of tritium. The spectra of antineutrinos of this background were calculated taking into account the Coulomb interaction between electron and daughter nucleus in β -- -decay. The dependence of these spectra on the value of the baryon-to-photon ratio η at the period of primordial nucleosynthesis is investigated. The observations of these antineutrinos will allow us to look directly at the very early Universe and nonequilibrium processes taken place before, during, and some time after primordial nucleosynthesis. In any case, this phenomenon is one more aspect in the picture of the standard cosmological model.

中文翻译：

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原始核合成的非平衡反中微子的光谱特征

摘要 在原始核合成时代，由于中子和氚核的衰变，正在形成非平衡反中微子的背景。该背景的反中微子的光谱是考虑到β-衰变中电子和子核之间的库仑相互作用来计算的。研究了这些光谱对原始核合成时期重子光子比值 η 的依赖性。对这些反中微子的观察将使我们能够直接观察非常早期的宇宙以及发生在原始核合成之前、之中和之后一段时间的非平衡过程。无论如何，这种现象是标准宇宙学模型画面中的另一个方面。