Sneutrinos as two inflatons and curvaton and leptogenesis
Sneutrinos as two inflatons and curvaton and leptogenesis
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中微子作为两个暴胀子以及曲子和轻子发生
DOI:
10.1088/1475-7516/2022/11/021
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发表时间:
2022
影响因子:
6.4
通讯作者:
Yokoyama Shuichiro
中科院分区:
文献类型:
--
作者:
Takahashi Tomo;Yamada Toshifumi;Yokoyama Shuichiro
We argue that sneutrinos can be embedded in a multi-field inflation framework where two inflatons and a curvaton simultaneously contribute to primordial fluctuations, which is consistent with current constraints on the spectral index and the tensor-to-scalar ratio from Planck and BICEP/Keck 2018. We also show that the same framework can also explain the baryon asymmetry of the Universe via leptogenesis realized by the decay of the lightest sneutrino. We investigate the parameter range for the scenario to work such as that of sneutrino masses. In particular, we show that the tensor-to-scalar ratio should be larger than 10-4 for a successful scenario.
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作者:
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通讯作者:
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影响因子:
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作者:
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DOI:
--
发表时间:
2003
期刊:
影响因子:
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作者:
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