论文标题
早期重组作为解决$ H_0 $张力的解决方案
Early recombination as a solution to the $H_0$ tension
论文作者
论文摘要
我们表明，可以通过早些时候进行重组来解决$ h_0 $张力，从而使宇宙微波背景（CMB）数据几乎完好无损。我们提供一套一套一般必要条件，以使CMB数据非常适合，同时实现了本地测量建议的高价值$ H_0 $。作为与早期重组成功场景的具体示例，我们证明了具有随时间变化的$ m_e $的模型确实可以满足所有条件。我们进一步表明，这种模型也可以很好地适合Baryon声学振荡（BAO）和类型的Supernovae（Sneia）的低$ Z $距离测量值，并具有模型的简单扩展。 Time-varying $m_e$ in the framework of $Ω_kΛ$CDM is found to be a sufficient and excellent example as a solution to the $H_0$ tension, yielding $H_0=72.3_{-2.8} ^{+2.7}\,$km/sec/Mpc from the combination of CMB, BAO and SNeIa data even without incorporating any direct local $H_0$测量。除了$ h_0 $张力外，从CMB镜头异常的角度来看，该型号也受到青睐。
We show that the $H_0$ tension can be resolved by making recombination earlier, keeping the fit to cosmic microwave background (CMB) data almost intact. We provide a suite of general necessary conditions to give a good fit to CMB data while realizing a high value of $H_0$ suggested by local measurements. As a concrete example for a successful scenario with early recombination, we demonstrate that a model with time-varying $m_e$ can indeed satisfy all the conditions. We further show that such a model can also be well fitted to low-$z$ distance measurements of baryon acoustic oscillation (BAO) and type-Ia supernovae (SNeIa) with a simple extension of the model. Time-varying $m_e$ in the framework of $Ω_kΛ$CDM is found to be a sufficient and excellent example as a solution to the $H_0$ tension, yielding $H_0=72.3_{-2.8} ^{+2.7}\,$km/sec/Mpc from the combination of CMB, BAO and SNeIa data even without incorporating any direct local $H_0$ measurements. Apart from the $H_0$ tension, this model is also favored from the viewpoint of the CMB lensing anomaly.
