Gravitational leptogenesis

Gravitational leptogenesis
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引力轻子发生

DOI:
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发表时间:
2006
期刊:
影响因子:
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通讯作者:
S. Mohanty
S. Mohanty
中科院分区:
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文献类型:
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作者:
Gaetano Lambiase;S. Mohanty

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我们在里奇标量和费米子之间引入了一个五维CP违反耦合。如果重马约拉纳中微子在GUT尺度上解耦,该算子将中微子和反中微子的能级分开,并在辐射时代产生轻子不对称。如果轻中微子具有双β衰变实验中可观察到的马约拉纳质量,该算子还可以在热暴胀期间产生轻子不对称。
We introduce a dimension five CP violating coupling between the Ricci scalar and fermions. This operator splits the energy level between neutrinos and antineutrinos and can generate a lepton asymmetry in the radiation era if heavy Majorana neutrinos decouple at the GUT scale. This operator can also generate a lepton asymmetry during warm inflation if the light neutrinos have a Majorana mass which is observable in double beta decay experiments.