论文标题
GW170817之后的一段时间的暗能量漏洞
Dark energy loopholes some time after GW170817
论文作者
论文摘要
在GW170817清除后，我们重新审查了定位重力的标量张量理论的约束。我们特别注意动态漏洞，当我们强加动态场方程时，引力波的异常传播速度可能会消失。通过在有效的领域理论形式主义中工作，我们可以改善以前的分析，扫描更广泛的理论，包括Horndeski和Dhost。此外，形式主义非常适合考虑不均匀扰动的效果，我们明确考虑了一个事实，即银河过度的过度迫使领先秩序无压。
We revisit the constraints on scalar tensor theories of modified gravity following the purge of GW170817. We pay particular attention to dynamical loopholes where the anomalous speed of propagation of the gravitational wave can vanish on-shell, when we impose the dynamical field equations. By working in the effective field theory formalism we are able to improve on previous analyses, scanning a much wider class of theories, including Beyond Horndeski and DHOST. Furthermore, the formalism is well adapted to consider the effect of inhomogeneous perturbations, where we explicitly take into account the fact that the galactic overdensities are pressureless to leading order.
