Conference Support Grant: Numerical Relativity beyond General Relativity

高级LIGO引力波天文学领域的主要目标之一是在一种以前从未被测试过的状态下测试爱因斯坦的广义相对论(GR)。这类科学的影响具有潜在的变革性，并可能产生对引力物理新范式的洞察。要实现这一目标，将需要新一代黑洞和中子星合并的数值模拟。社区不仅需要在GR内进行更精确的模拟，而且还需要在GR之外的理论中探索合并的完整数值模拟。这样的模拟处于重力研究的前沿。这是第一次以GR以外的理论中的数值模拟为重点的会议。这个为期一周的国际研讨会名为“超越广义相对论的数值相对论”，旨在将这一新兴领域介绍给更大的社区。用超越广义相对论进行数值模拟一直是人们所渴望的，但很少有小组做出努力来解决这个问题。这次研讨会的主要目标是向所有在这一主题上积极取得进展的研究人员和即将成为该领域未来领导者的新人传播信息。这将为未来的研究点子提供异花授粉和播种。参与者来自数值模拟、引力波数据分析和GR以外的理论领域。该格式包括结构化的演讲(例如，数学形式主义、不同的数值方法、标量张量模拟的现状、爱因斯坦-张量、爱因斯坦-伸缩-高斯-波内特、爱因斯坦-麦克斯韦-迪拉顿、切恩-西蒙斯、双测理论)和开放讨论(例如，波形要求、开放源代码、反de-Sitter空间的数值)。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

One of the main goals of the field of gravitational-wave astronomy with Advanced LIGO is testing Einstein's theory of general relativity (GR) in a regime where it has never been tested before. The impact of such science is potentially transformative, and may yield insights into a new paradigm of gravitational physics. Accomplishing this goal will require a new generation of numerical simulations of merging black holes and neutron stars. Not only does the community need more precise simulations within GR, but also to explore full numerical simulations of mergers in theories beyond GR. Such simulations are at the forefront of gravity research. This is the first meeting with a focus on numerical simulations in theories beyond GR. This one-week long international workshop, "Numerical Relativity beyond General Relativity", aims at introducing this emerging field to the larger community.Performing numerical simulations in beyond-GR theories has long been desired, but few groups have made the efforts to tackle the problem. The main goals of this workshop will be to disseminate information among all the researchers actively making progress on this topic, and newcomers who are going to become future leaders in this field. This will cross-pollinate and plant future research ideas. The participants are drawn from the fields of numerical simulation, gravitational-wave data analysis, and theories beyond GR. The format includes structured talks (e.g. mathematical formalism, different numerical approaches, statuses of simulations in scalar-tensor, Einstein-dilaton-Gauss-Bonnet, Einstein-Maxwell-Dilaton, Chern-Simons, bimetric theory), and open discussions (e.g. waveform requirements, open source codes, numerics in Anti-de-Sitter space).This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.