论文标题
立方Horndeski理论中的重力崩溃
Gravitational Collapse in Cubic Horndeski Theories
论文作者
论文摘要
我们研究了重力的球形对称重力塌陷。通过改变耦合常数和标量场的初始幅度，我们确定了耦合空间和振幅的区域，可以为Horndeski理论构建全局解决方案。此外，我们确定有效田间理论的有效性方案是某个弱场条件始终保持较小的子区域。我们使用爱因斯坦方程和地平线穿透坐标的CCZ4公式进化了初始数据，而无需假设球形对称性。
We study spherically symmetric gravitational collapse in cubic Horndeski theories of gravity. By varying the coupling constants and the initial amplitude of the scalar field, we determine the region in the space of couplings and amplitudes for which it is possible to construct global solutions to the Horndeski theories. Furthermore, we identify the regime of validity of effective field theory as the sub-region for which a certain weak field condition remains small at all times. We evolve the initial data using the CCZ4 formulation of the Einstein equations and horizon penetrating coordinates without assuming spherical symmetry.
