论文标题
在一阶相变的微弱相互作用粒子中引力波
Gravitational Waves from Feebly Interacting Particles in a First Order Phase Transition
论文作者
论文摘要
一阶相变是良好的动机，并从早期宇宙中进行了广泛研究的重力波（GWS）。假定在此类过渡过程中释放的真空能主要转移到真正真空气泡的膨胀壁上，其碰撞源GWS或周围的等离子体，产生声波和湍流，它们充当GW来源。在这封信中，我们研究了迄今为止尚未考虑的另一种可能性：释放的能量主要转移到虚弱的相互作用的粒子，这些粒子不接受流体描述，而只是单独单独传播。我们开发了形式主义，以研究此类构型的GW产生，并证明与常规来源相比，此类GW信号具有质量上不同的特征，并且有可能使用近距离的GW探测器观察到。
First order phase transitions are well-motivated and extensively studied sources of gravitational waves (GWs) from the early Universe. The vacuum energy released during such transitions is assumed to be transferred primarily either to the expanding walls of bubbles of true vacuum, whose collisions source GWs, or to the surrounding plasma, producing sound waves and turbulence, which act as GW sources. In this Letter, we study an alternative possibility that has so far not been considered: the released energy gets transferred primarily to feebly interacting particles that do not admit a fluid description but simply free-stream individually. We develop the formalism to study the production of GWs from such configurations, and demonstrate that such GW signals have qualitatively distinct characteristics compared to conventional sources and are potentially observable with near-future GW detectors.
