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arXiv 2202.07714astro-ph.CO
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来自暗 sector 相互作用的电子质量变化及其与宇宙学观测的相容性

Electron mass variation from dark sector interactions and compatibility with cosmological observations

Kouki Hoshiya, Yo Toda

AI总结:

本文提出电子与暗物质经源自额外维理论的滚动标量场同暗能量耦合的模型,利用 Planck、BAO、Pantheon 和 SH0ES 数据拟合,发现其可缓解 Hubble 张力,并以超过 2σ 显著性支持非零耦合。

摘要:

我们研究了一个模型,其中电子和暗物质通过标量场的滚动与暗能量相互作用,该标量场源自额外维理论,例如 braneworld 理论和 Brans-Dicke 理论。在该模型中,暗能量与暗物质及电子耦合,导致早期宇宙中暗物质和电子的质能取更大的值。我们还将模型与宇宙学数据进行拟合。通过分析来自 Planck、重子声学振荡(BAO)、光变曲线(Pantheon)以及 Ia 型超新星(SH0ES)的数据可以看出,我们的模型缓解了 Hubble 张力,并且耦合参数倾向于非零值,显著性超过 2σ。

英文摘要:

We investigate the model where electrons and dark matter interact with dark energy through the rolling of a scalar field which comes from extra dimensional theories such as the braneworld theory and Brans-Dicke theory. In this model, dark energy couples to dark matter and electrons, which leads to larger values of the mass energies of dark matter and electrons in the early universe. We also fit our model to the cosmological data. By analyzing the data from Planck, baryon acoustic oscillation (BAO), light curves (Pantheon), and type-Ia supernovae (SH0ES), it can be seen that the Hubble tension is relieved in our model and the coupling parameter prefers a non-zero value with a significance of over 2σ.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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