论文标题
恢复良好的宇宙学：秤
Well Tempered Cosmology: Scales
论文作者
论文摘要
尽管具有较高（Planck）的能量宇宙常数$λ$，但通过标量电场动态取消$λ$，恢复良好的宇宙学为以低能宇宙加速度获得宇宙学提供了明确的路径。我们探索进入各种Horndeski重力项的质量尺度之间的关系，并专注于仅一个或两个质量尺度的情况，从而获得了动作形式的一般解决方案。由此产生的宇宙学可以是自然而可行的，并且作为处理宇宙恒定问题的唯一途径之一，它具有作为基准宇宙学的理由。
Well tempered cosmology provides a well defined path for obtaining cosmology with a low energy cosmic acceleration despite a high (Planck) energy cosmological constant $Λ$, through a scalar field dynamically canceling $Λ$. We explore relations between the mass scales entering the various Horndeski gravity terms, and focus on the cases of only one or only two mass scales, obtaining general solutions for the form of the action. The resulting cosmology can be natural and viable, and as one of the only paths to dealing with the cosmological constant problem it has a rationale to be a benchmark cosmology.
