论文标题
原始重力波谱中低尺度瘦化的指纹
Fingerprint of Low-Scale Leptogenesis in the Primordial Gravitational-Wave Spectrum
论文作者
论文摘要
早期宇宙中的右手中性（RHN）质量的动态产生自然需要形成宇宙弦，从而在引力波（GWS）中产生可观察到的信号。在这里，我们表明，与自发对称性破坏的规模相比，GW频谱中的特征断裂将为宇宙扩张历史上的新阶段和RHN质量量表的抑制提供证据。因此，检测这种光谱特征将代表一种新颖而独特的可能性，可以探究参数空间区域中RHN质量产生的物理，该区域允许根据Electroweak的自然性进行低尺度的瘦素发生。
The dynamical generation of right-handed-neutrino (RHN) masses in the early Universe naturally entails the formation of cosmic strings that give rise to an observable signal in gravitational waves (GWs). Here, we show that a characteristic break in the GW spectrum would provide evidence for a new stage in the cosmological expansion history and a suppression of the RHN mass scale compared to the scale of spontaneous symmetry breaking. The detection of such a spectral feature would thus represent a novel and unique possibility to probe the physics of RHN mass generation in regions of parameter space that allow for low-scale leptogenesis in accord with electroweak naturalness.
