Counting neutrinos to per-mill accuracy

该项目旨在在粒子物理标准模型的背景下，提供迄今为止最精确的宇宙学关键参数——中微子有效数的计算。这个参数对于正确解释宇宙学观测结果至关重要，它可以重建宇宙的时间线，从而推断其性质。预期的结果是一个4位数的数字，可以用于未来所有的宇宙学计算/分析。除了提高澳大利亚在基础科学研究方面的国际形象外，该项目还希望通过培训hdr在高级数学建模和计算方面的能力，以及在许多领域的可转移技能，提供显著的社会效益。

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.