Well-Posedness of the Four-Derivative Scalar-Tensor Theory of Gravity in Singularity Avoiding Coordinates.

Well-Posedness of the Four-Derivative Scalar-Tensor Theory of Gravity in Singularity Avoiding Coordinates.
复制标题

避奇坐标中引力四导数标量张量理论的适定性。

DOI:
--
复制
发表时间:
2022
影响因子:
8.6
通讯作者:
P. Figueras
P. Figueras
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
Llibert Arest'e Sal'o;K. Clough;P. Figueras

文献摘要

参考文献

被引文献

相似文献

我们表明,最一般的标量-张量引力理论的4个衍生物在3+1维是适定的修改版本的CCZ 4制定的爱因斯坦方程在奇异避免坐标。我们证明了我们的新配方在实践中的鲁棒性,通过研究等质量黑洞二进制合并不同值的耦合常数。虽然我们的适定性分析仅限于耦合小的情况下,我们发现,在模拟中,我们能够推动耦合到更大的值,使一定的弱耦合条件是为了一,没有不稳定性的发展。我们的信提供了许多数值相对论代码进行这种模拟的方法,这些代码依赖于移动的穿刺规来演化黑洞奇点。
We show that the most general scalar-tensor theory of gravity up to four derivatives in 3+1 dimensions is well-posed in a modified version of the CCZ4 formulation of the Einstein equations in singularity-avoiding coordinates. We demonstrate the robustness of our new formulation in practice by studying equal mass black hole binary mergers for different values of the coupling constants. Although our analysis of well-posedness is restricted to cases in which the couplings are small, we find that in simulations we are able to push the couplings to larger values, so that a certain weak coupling condition is order one, without instabilities developing. Our Letter provides the means for such simulations to be undertaken by the many numerical relativity codes that rely on the moving puncture gauge to evolve black hole singularities.
DOI: 10.1088/1361-6382/aba221
发表时间: 2020
影响因子: 3.5
作者:
Carson, Zack;Yagi, Kent
通讯作者: Yagi, Kent
DOI: 10.21105/joss.03703
发表时间: 2021-12
期刊: J. Open Source Softw.
影响因子: --
作者:
T. Andrade;L. Saló;Josu C. Aurrekoetxea;J. Bamber;K. Clough;Robin Croft;Eloy de Jong;A. Drew-A.-Dre
通讯作者: T. Andrade;L. Saló;Josu C. Aurrekoetxea;J. Bamber;K. Clough;Robin Croft;Eloy de Jong;A. Drew-A.-Dre
标量高斯邦尼重力中的后牛顿引力和标量波
DOI: 10.1088/1361-6382/ac4196
发表时间: 2022
影响因子: 3.5
作者:
Shiralilou, Banafsheh;Hinderer, Tanja;Nissanke, Samaya M;Ortiz, Néstor;Witek, Helvi
通讯作者: Witek, Helvi
数值相对论中自适应网格细化的经验教训
DOI: 10.1088/1361-6382/ac6fa9
发表时间: 2022
影响因子: 3.5
作者:
Radia M
通讯作者: Radia M