论文标题
比较简单的二次重力模型中重力波和电磁信号的光度距离
Comparing the luminosity distance for gravitational waves and electromagnetic signals in a simple model of quadratic gravity
论文作者
论文摘要
我们根据具有二次曲率校正的重力理论来计算在广义宇宙学场景中控制张量度量扰动的传播的修改摩擦系数。在这种情况下，我们讨论了重力和电磁光度距离之间的差异，以及基于爱因斯坦方程的标准结果的差异。我们提出了典型的超新星和标准警报器典型的宇宙红移量表上修饰的光度距离的数值估计。
We compute the modified friction coefficient controlling the propagation of tensor metric perturbations in the context of a generalized cosmological scenario based on a theory of gravity with quadratic curvature corrections. In such a context we discuss the differences between gravitational and electromagnetic luminosity distance, as well as the differences with the standard results based on the Einstein equations. We present numerical estimates of the modified luminosity distance on the cosmic redshift scale typical of Supernovae and standard sirens.
