标题： 新的引力记忆 显示英文标题

标题： New Gravitational Memories

摘要： 常规引力记忆效应是由辐射能量流引起的两个探测器位置的相对位移。 我们发现了一种新的引力“自旋记忆”效应，在这种效应中，沿顺时针和逆时针轨道传播的光束由于辐射角动量流而获得相对延迟。 最近已证明位移记忆公式是外尔（Weinberg）软引力子定理的时间傅里叶变换。 在这里我们看到，自旋记忆公式是近期发现的次领头阶软引力子定理的时间傅里叶变换。 显示英文摘要

摘要： The conventional gravitational memory effect is a relative displacement in the position of two detectors induced by radiative energy flux. We find a new type of gravitational `spin memory' in which beams on clockwise and counterclockwise orbits acquire a relative delay induced by radiative angular momentum flux. It has recently been shown that the displacement memory formula is a Fourier transform in time of Weinberg's soft graviton theorem. Here we see that the spin memory formula is a Fourier transform in time of the recently-discovered subleading soft graviton theorem.