Gravitational memory effects and the BMS freedoms exhibited at future null infinity have recently been resolved and utilized in numerical relativity simulations. With this, gravitational wave models and our understanding of the fundamental nature of general relativity have been vastly improved. In this paper, we review the history and intuition behind memory effects and BMS symmetries, how they manifest in gravitational waves, and how controlling the infinite number of BMS freedoms of numerical relativity simulations can crucially improve the waveform models that are used by gravitational wave detectors. We reiterate the fact that, with memory effects and BMS symmetries, not only can these next-generation numerical waveforms be used to observe never-before-seen physics, but they can also be used to test GR and learn new astrophysical information about our Universe.

中文翻译：

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数值相对论中的引力记忆和 BMS 框架固定研究进展


引力记忆效应和在未来零无穷大处表现出的 BMS 自由度最近已被解析并用于数值相对论模拟。有了这个，引力波模型和我们对广义相对论基本性质的理解得到了极大的改进。在本文中，我们回顾了记忆效应和 BMS 对称性背后的历史和直觉，它们如何在引力波中表现出来，以及控制数值相对论模拟的无限数量的 BMS 自由度如何关键地改进引力波探测器使用的波形模型。我们重申这样一个事实，即通过记忆效应和 BMS 对称性，这些下一代数值波形不仅可以用于观察前所未见的物理学，还可以用于测试 GR 并了解有关我们宇宙的新天体物理信息。