论文标题
太阳系测试和f（r）重力的变色龙效应
Solar System tests and chameleon effect in f (R) gravity
论文作者
论文摘要
使用一种避免爱因斯坦框架中标量识别的新型和自洽的方法，我们在太阳系测试的背景下重新分析了F（R）重力的生存能力。为了做到这一点，我们偏离了一个简单但完全相对论的微分方程系统，该系统描述了静态和球形对称的时空中的紧凑对象，然后我们进行了适用于适用于非派别对象（例如太阳）的合适线性化。然后，我们清楚地表明，在哪些条件下，新兴的变色龙样机制可以导致牛顿后参数γ与观察界兼容。为了说明这种方法，我们使用提出的几种特定的F（r）模型来解释宇宙的当前加速度，并显示其中哪些能够满足这些界限。
Using a novel and self-consistent approach that avoids the scalar-tensor identification in the Einstein frame, we reanalyze the viability of f(R) gravity within the context of solar-system tests. In order to do so, we depart from a simple but fully relativistic system of differential equations that describe a compact object in a static and spherically symmetric spacetime, and then we make suitable linearizations that apply to nonrelativistic objects such as the Sun. We then show clearly under which conditions the emerging chameleonlike mechanism can lead to a post-Newtonian parameter γ compatible with the observational bounds. To illustrate this method, we use several specific f(R) models proposed to explain the current acceleration of the Universe, and we show which of them are able to satisfy those bounds.
