论文标题
通过局部测量G的时间变化来限制标量调整理论的宇宙学演化
Constraining the cosmological evolution of scalar-tensor theories with local measurements of the time variation of G
论文作者
论文摘要
我们确定可以推断出局部重力常数时间演变的月球激光器的约束，以推断出对宇宙学重力常数的时间演变的约束，以定位的重力量表理论。我们允许标量调整理论是非线性并包含筛选机制的可能性。这导致对由Horndeski函数$ |α_M| \ Lessim 0.002 $描述的宇宙学Planck质量的运行产生强大的限制。我们发现我们的假设对于大多数Vainshtein和动力学筛选模型都是有效的，其中移动对称$ ϕ \ rightArrowDidece+ c $所保留，但受到某些变色龙和对称的symmetron筛选模型的侵犯，在该模型中，宏观等价原理被打破了。
We determine the conditions for which the constraints from lunar laser ranging on the time evolution of the local gravitational constant can be extrapolated to impose constraints on the time evolution of the cosmological gravitational constant in scalar-tensor theories of modified gravity. We allow for the possibility that the scalar-tensor theories are non-linear and contain a screening mechanism. This results in strong constraints on the running of the cosmological Planck mass described by the Horndeski function $|α_M|\lesssim 0.002$. We find that our assumptions are valid for most Vainshtein and kinetic screening models, where the shift symmetry $ϕ\rightarrowϕ+ c$ holds, but are violated by some Chameleon and Symmetron screening models, where the macroscopic equivalence principle is broken.
