论文标题
在轴 - -SU（2）膨胀的激光干涉仪中可检测到的重力波
Gravitational waves detectable in laser interferometers from axion-SU(2) inflation
论文作者
论文摘要
Chromo-Natural Efflation（CNI）是一种通货膨胀模型，其中轴与SU $（2）$量规场相结合起充气。在CNI中，仪表场具有非零的真空期望值（VEV），从而导致重力波（GWS）的增强。由于GWS的生产过多，普朗克的观察结果排除了原始的CNI。在这项工作中，我们考虑了一种通货膨胀模型，其中量规场在CMB模式退出地平线后获取非零VEV。此外，我们添加到模型中的另一个领域，该领域主导宇宙并在轴上开始振荡后驱动通货膨胀，并且规格场VEVS消失了。通过执行数值模拟，我们找到了一个参数空间，其中增强的GWS不会违反CMB约束，并且可以通过BBO和ET等未来的GWS观测值检测到。
Chromo-natural inflation (CNI) is an inflationary model where an axion coupled with SU$(2)$ gauge fields acts as the inflaton. In CNI, the gauge fields have nonzero vacuum expectation values (VEVs), which results in the enhancement of gravitational waves (GWs). The original CNI is ruled out by the Planck observations due to the overproduction of GWs. In this work, we consider an inflationary model where the gauge fields acquire nonzero VEVs after the CMB modes exit the horizon. Moreover, we add to the model another field that dominates the universe and drives inflation after the axion starts to oscillate and the gauge field VEVs vanish. By performing numerical simulations, we find a parameter space where the enhanced GWs do not violate the CMB constraints and can be detected by the future GWs observations such as BBO and ET.
