Sterile neutrino is a fascinating candidate for dark matter. In this paper, we examine the Affleck-Dine (AD) leptogenesis scenario generating a large lepton asymmetry, which can induce the resonant production of sterile neutrino dark matter via the Shi-Fuller (SF) mechanism. We also revisit the numerical calculation of the SF mechanism and the constraints from current X-ray and Lyman-α forest observations. We find that the AD leptogenesis scenario can explain the production of sterile neutrino dark matter by incorporating a non-topological soliton with a lepton charge called L-ball. Finally, we discuss an enhancement of second-order gravitational waves at the L-ball decay and investigate the testability of our scenario with future gravitational wave observations.

中文翻译：

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惰性中微子暗物质共振产生的阿弗莱克-丁轻子发生场景


惰性中微子是暗物质的一个令人着迷的候选者。在本文中，我们研究了阿弗莱克-丁（AD）轻子发生场景，该场景产生了大的轻子不对称性，这可以通过施-富勒（SF）机制诱导惰性中微子暗物质的共振产生。我们还重新审视了 SF 机制的数值计算以及当前 X 射线和莱曼的约束α森林观察。我们发现 AD 轻子发生情景可以通过将非拓扑孤子与称为 L 球的轻子电荷结合起来来解释惰性中微子暗物质的产生。最后，我们讨论了 L 球衰变时二阶引力波的增强，并研究了我们的场景与未来引力波观测的可测试性。