论文标题
诱导的一阶转换触发的诱导生成
Leptogenesis triggered by a first-order phase transition
论文作者
论文摘要
我们提出了一种新的瘦化情况，该场景是由一阶相变（FOPT）触发的。右撇子中微子（RHN）在旧真空中是无质量的，而它们在新真空气泡中获得质量，并且与FOPT温度相比，质量间隙很大。超相关的气泡壁将RHNS扫到了气泡中，在那里，RHNS经历了快速衰减并产生Lepton不对称性，该物体进一步转化为宇宙的Baryon不对称性（BAU）。由于RHNS在气泡内部的平衡状态，因此产生的BAU不会受到热浴洗涤的影响。我们首先讨论了这种FOPT瘦素发生机制的一般特征，然后在扩展的$ b-l $模型中实现它。从$ u（1）_ {b-l} $断裂的重力波可以在将来的干涉仪中检测到。
We propose a new scenario of leptogenesis, which is triggered by a first-order phase transition (FOPT). The right-handed neutrinos (RHNs) are massless in the old vacuum, while they acquire a mass in the new vacuum bubbles, and the mass gap is huge compared with the FOPT temperature. The ultra-relativistic bubble walls sweep the RHNs into the bubbles, where the RHNs experience fast decay and generate the lepton asymmetry, which is further converted to the baryon asymmetry of the Universe (BAU). Since the RHNs are out of equilibrium inside the bubble, the generated BAU does not suffer from the thermal bath washout. We first discuss the general feature of such a FOPT leptogenesis mechanism, and then realize it in an extended $B-L$ model. The gravitational waves from $U(1)_{B-L}$ breaking could be detected at the future interferometers.
