论文标题

重组的准分子机制可以降低哈勃张力吗?

Can the quasi-molecular mechanism of recombination decrease the Hubble tension?

论文作者

Beradze, Revaz, Gogberashvili, Merab

论文摘要

在最近建议的非标准的准分子重组机制中,相邻质子的存在增加了电离能,并降低了氢的最终重组率。这两种效果都可以导致使用CMB数据和标准宇宙学模型获得的宇宙的当前膨胀率的较大值,从而能够减少或解决哈勃张力问题。我们还注意到,由于准分子通道的重组开始较早开始,由于cmb预测的晚期密度的CMB预测值将降低。

In the recently suggested non-standard, quasi-molecular mechanism of recombination, the presence of neighboring proton increases the ionization energy and decreases the final recombination rate of hydrogen. Both these two effects can lead to the larger value of the present expansion rate of the universe obtained using CMB data and standard cosmological model, and thus are able to reduce or resolve the Hubble tension problem. We note also that due to the quasi-molecular channel the recombination began earlier, what potentially can solve the sigma-eight tension, since the CMB-predicted value of the late matter density will be decreased.

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