Measurements for the expansion rate of the universe disagree. Indeed, local measurements suggest a higher value of the Hubble constant than those performed through the cosmic microwave background. This fact led to a very interesting debate within the scientific community. The paper is not devoted to give solutions to the problem of “Hubble tension”. The aim of this paper is, on the contrary, to deduce the Ω0mh2 cosmological parameter from a theoretical point of view, using only two experimental data: the temperature of CMB today and the temperature of photons near the decoupling time.

中文翻译：

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确定无张力的 Ω0mh2 宇宙学参数

宇宙膨胀率的测量结果不一致。事实上，局部测量表明哈勃常数的值高于通过宇宙微波背景进行的测量。这一事实在科学界引发了一场非常有趣的辩论。这篇论文并不致力于解决“哈勃张力”的问题。相反，本文的目的是推导出Ω0米H2宇宙学参数从理论角度来看，只使用了两个实验数据：今天的 CMB 温度和去耦时间附近的光子温度。