论文标题
动态切尔西蒙斯重力中的引力波的产生
Generation of gravitational waves in dynamical Chern-Simons gravity
论文作者
论文摘要
我们研究了具有非典型动力学项的两场通货膨胀模型中产生的重力波（GWS），其中重力Chern-Simons项与重型动态场耦合。在这样的模型中，原始GWS经历了某些模式的一个共振放大时期。此外，由于有效的负质量，造成曲率扰动，导致诱导的GWS大量诱导的GWS，因此异生性扰动遭受了暂时的速度不稳定。这两个随机引力波背景对应于不同的频带，预计将来将通过SKA，Lisa和Taiji等未来的GW探测器检测。
We investigate gravitational waves (GWs) generated in a two-field inflationary model with a non-canonical kinetic term, in which the gravitational Chern-Simons term is coupled to a heavy dynamical field. In such a model, primordial GWs experience a period of resonant amplification for some modes. In addition, isocurvature perturbations suffer from a temporary tachyonic instability due to an effective negative mass, which source curvature perturbations, resulting in large induced GWs. These two stochastic gravitational wave backgrounds correspond to different frequency bands, which are expected to be detected by future GW detectors such as SKA, LISA and Taiji.
