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arXiv 1708.04899astro-ph.CO
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轻子数不对称性与再加热温度的下限

Lepton number asymmetries and the lower bound on the reheating temperature

Gabriela Barenboim, Wan-Il Park

摘要:

我们表明,在早期宇宙中的物质主导时代的再加热温度可以被推低到中微子退耦温度在$2 \ {\rm MeV}$左右,如果再加热发生通过非强子衰变的主导物质和中微子反中微子不对称性仍然足够大,$|L| \gtrsim \mathcal{O}(10^{-2})$(取决于中微子味)在再加热结束。

英文摘要:

We show that the reheating temperature of a matter-domination era in the early universe can be pushed down to the neutrino decoupling temperature at around $2 \ {\rm MeV}$ if the reheating takes place through non-hadronic decays of the dominant matter and neutrino-antineutrino asymmetries are still large enough, $|L| \gtrsim \mathcal{O}(10^{-2})$ (depending on the neutrino flavor) at the end of reheating.

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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