标题： 引力子在引力原子上的散射：遗迹引力子散粒噪声 显示英文标题

标题： Graviton Scattering on Gravitational Atoms: Relic Graviton Shot Noise

摘要： 我们研究了引力子散射在一个引力原子上的现象。所谓引力原子，是指由两个大质量粒子的引力（束缚）态组成的量子力学系统，可能还伴随着一些边界条件（例如在桌面上反弹或像钟摆一样悬挂）。我们证明了一个令人意外的事实，即总吸收截面是普适的，它既不依赖于引力束缚粒子的质量，也不依赖于提供束缚势能的质量。我们发现总吸收截面简单地正比于普朗克面积，乘以一个无量纲的数值因子。我们还探讨了探测遗迹引力子噪声的可能性。 显示英文摘要

摘要： We study the scattering of a graviton on a gravitational atom. By gravitational atom we mean a quantum mechanical system of a gravitational (bound) state of two massive particles, with possibly some boundary conditions (such as bouncing on a table or hanging as a pendulum). We demonstrate the unexpected fact, that the total absorption cross section is universal, it is independent of both the mass of the gravitationally bound particle or of the mass providing the binding potential. We find that the total absorption cross-section is simply proportional to the Planck area, multiplied by a dimensionless, numerical factor. We speculate about the potential for detection of relic gravitons shot noise.