论文标题
在强冷的相变中产生的重力波的更新预测
Updated predictions for gravitational waves produced in a strongly supercooled phase transition
论文作者
论文摘要
我们在强烈的超冷相过渡中更新引力波（GW）信号的预测，以经典的共形u（1）$ _ {b-l} $模型。我们实施$ \ proptoγ^2 $在气泡墙上的摩擦缩放，并更新来自气泡碰撞和等离子体相关来源的GW生产效率因子的估计值。我们考虑到这样一个事实，即破坏对称性领域的较小衰减率可能导致过渡后的短暂物质主导时代，因为该领域在衰减前的最小值左右摇摆。我们发现，强烈的气泡碰撞信号发生在参数空间的很大一部分中，并且在物质主导的时期重新进入地平线的模式的改性红移会在频谱中产生一个特征性的“高原”。该模型中的GW频谱将在低频范围（例如Lisa）和中频范围内检测到，例如，通过Aion/Magis和Adge，以及Ligo和Et的高频范围。信号的峰值频率受到对撞机的约束在u（1）$ _ {b-l} $量规玻色子上的质量限制，而在高频下，标量场的缓慢衰减和所得情况为主导的ERA会减小GW信号。
We update predictions for the gravitational wave (GW) signal from a strongly supercooled phase transition in an illustrative classically conformal U(1)$_{B-L}$ model. We implement $\propto γ^2$ scaling of the friction on the bubble wall and update the estimates for the efficiency factors for GW production from bubble collisions and plasma-related sources. We take into account the fact that a small decay rate of the symmetry-breaking field may lead to brief matter-dominated era after the transition, as the field oscillates around its minimum before decaying. We find that a strong bubble collision signal occurs in a significant part of the parameter space, and that the modified redshift of the modes that re-enter the horizon during the matter-dominated period generates a characteristic tilted `plateau' in the spectrum. The GW spectrum in this model would be detectable in the low-frequency range, e.g., by LISA, and in the mid-frequency range, e.g., by AION/MAGIS and AEDGE, and in the high-frequency range by LIGO and ET. The peak frequency of the signal is limited from below by collider constraints on the mass of the U(1)$_{B-L}$ gauge boson, while at high frequencies the slow decay of the scalar field and the resulting matter-dominated era diminishes the GW signal.
