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:
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发表时间:
2022
影响因子:
8.6
通讯作者:
P. Figueras
中科院分区:
文献类型:
--
作者:
Llibert Arest'e Sal'o;K. Clough;P. Figueras
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.
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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
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
影响因子:
3.5
作者:
Radia M
通讯作者:
Radia M