论文标题
原始核合成的热贡献
Thermal Contributions to Primordial Nucleosynthesis
论文作者
论文摘要
已知电子质量会在有限温度和密度下修饰。弱核过程对电子质量有很大的影响，这在统计背景下改变了。我们证明了电子质量的温度变化与早期宇宙中的β衰减有关。它对早期宇宙中的丰富元素的精确贡献描述了有关核合成的一些细节。我们采用QED重新归一化的计算方案来精确计算核过程中电子质量的温度依赖性。在本文中，我们精确地计算了核合成期间电子的浓度及其质量变化，并使用它来描述核合成期间宇宙的氦丰度，膨胀速率和能量密度。
Electron mass is known to modify at finite temperatures and densities. Weak nuclear processes have a great impact on electron mass which modifies in a statistical background. We demonstrate how the temperature change in electron mass is associated with beta decay in the early universe. Its precise contributions to the abundance of light elements in the early universe describe some of the details about nucleosynthesis. We employ the calculational scheme of the renormalization of QED to precisely compute the temperature dependence of electron mass during the nuclear processes. In this paper we precisely compute the concentration of electron and its mass change with temperature during nucleosynthesis and use it to describe the helium abundance, expansion rate and energy density of the universe during nucleosynthesis.
