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arXiv 2109.03263hep-phastro-ph.CO
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自相互作用中微子作为哈勃张力的解决方案?

Self-interacting neutrinos as a solution to the Hubble tension?

Anirban Das

摘要:

早期宇宙中中微子之间的自相互作用被认为是哈勃张力的一种解决方案,哈勃张力是CMB测量的哈勃常数与低红移数据之间的差异。然而,味普适中微子自相互作用受到大爆炸核合成和其他实验室实验如τ介子和K介子衰变、双中微子β衰变等的限制。这种风味特异性的相互作用较少受到实验室实验的限制。最后,我们解决的可行性解决哈勃紧张的框架内,这种特定的味道中微子自相互作用。

英文摘要:

Self-interaction among the neutrinos in the early Universe has been proposed as a solution to the Hubble tension, a discrepancy between the measured values of the Hubble constant from CMB and low-redshift data. However, flavor-universal neutrino self-interaction is highly constrained by Big Bang Nucleosynthesis and other laboratory experiments such as, tau and K-meson decay, double-neutrino beta decay etc. We study the cosmology when only one or two neutrino states are self-interacting. Such flavor-specific interactions are less constrained by the laboratory experiments. Lastly, we address the feasibility of resolving the Hubble tension within the framework of such flavor-specific neutrino self-interaction.

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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