Counting neutrinos to per-mill accuracy

该项目的目的是在粒子物理学标准模型的背景下，提供宇宙学中一个关键参数--中微子有效数--的最精确计算。这个参数对于正确解释宇宙学观测至关重要，它使我们能够重建宇宙的时间轴，从而推断出宇宙的性质。预期的结果是一个4位数的重要性，可用于所有未来的宇宙学计算/分析。除了提高澳大利亚在基础科学研究方面的国际知名度外，该项目预计将通过对人类发展报告进行高级数学建模和计算方面的培训，提供重大的社会效益，这些技能可在许多部门转让。

This Project aims to supply the most precise to-date calculation of a critical parameter in cosmology, the effective number of neutrinos, in the context of the standard model of particle physics. Crucial to the correct interpretation of cosmological observations, this parameter enables the reconstruction of the universe's timeline from which to infer its properties. The expected outcome is a number of 4-digit significance that can be used in all future cosmological computations/analyses. Besides raising Australia's international profile in basic science research, this project expects to provide significant societal benefits via the training of HDRs in advanced mathematical modelling and computing, transferable skills across many sectors.