量子动力学轻子生成与跷跷板辅助畴壁动力学产生的引力波
Quantum-Kinetic Leptogenesis and Gravitational Waves from Seesaw-Assisted Domain-Wall Dynamics
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中文总结 AI 辅助
本文在含实单态标量的最小两右手中微子I型跷跷板模型中，通过密度矩阵动力学框架，建立量子动力学重子不对称性与畴壁湮灭产生的引力波之间的模型依赖关联，为相关物理量提供一致性关系。
中文摘要 AI 辅助
我们在含实单态标量的最小两右手中微子I型跷跷板模型中，研究共振轻子生成与原初随机引力波背景之间的关联。该标量部分具有Z₂对称树级势能，而右手中微子与Z₂奇性标量的微小耦合会产生辐射真空能偏置，导致畴壁网络湮灭。对于近简并重中微子，我们用密度矩阵动力学框架描述重中微子系统，并以比率r_q=ΔM/Γ_{N₁}作为划分分离、共振与相干区域的组织变量。控制重中微子物理质量分裂的参数也会进入辐射产生的畴壁偏置，从而在量子动力学重子不对称性与引力波峰值频率、振幅之间建立模型依赖的关联。我们强调，引力波信号并非对单个低能中微子参数的直接测量，而是在中微子数据、共振轻子生成、畴壁湮灭与随机引力波背景之间提供模型依赖的一致性关系。
英文摘要
We investigate the connection between resonant leptogenesis and a primordial stochastic gravitational-wave background in a minimal two-right-handed-neutrino type-I seesaw with a real singlet scalar. The scalar sector admits a $\mathbb Z_2$-symmetric tree-level potential, while the tiny right-handed-neutrino coupling to the $\mathbb Z_2$-odd scalar generates a radiative vacuum-energy bias that causes the domain-wall network to annihilate. For quasi-degenerate heavy neutrinos, we describe the heavy-neutrino system with a density-matrix kinetic framework and use the ratio $r_q=ΔM/Γ_{N_1}$ as an organizing variable for the separated, resonant and coherent regimes. The heavy-neutrino parameters that control the physical mass splitting also enter the radiatively generated domain-wall bias, providing a model-dependent link between the quantum-kinetic baryon asymmetry and the gravitational-wave peak frequency and amplitude. We emphasize that the gravitational- wave signal is not a direct measurement of an individual low-energy neutrino parameter; rather, it provides a model-dependent consistency relation among neutrino data, resonant leptogenesis, domain-wall annihilation and the stochastic gravitational-wave background.
