Thomson scattering: one rate to rule them all
Thomson scattering: one rate to rule them all
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DOI：
10.1088/1475-7516/2023/10/065
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发表时间：
2023-06
影响因子：
6.4
通讯作者：
K. Greene;F. Cyr-Racine
中科院分区：
文献类型：
--
作者：
K. Greene;F. Cyr-Racine
持久的紧张局势之间的本地和远程测量H 0仍然没有得到解决。最近有人指出，宇宙微波背景（CMB）和大尺度结构（LSS）的观测值是不变的下，所有物种的引力自由落体率和光子和电子之间的汤姆逊散射率的统一重新标度。我们表明，精细结构常数α和电子质量me的独特变化可以利用这种标度变换来调和CMB和LSS数据与哈勃常数的广谱值，包括从本地测量推断的那些。重要的是，这项研究表明，特定的重组历史所施加的基本常数的变化的约束并不像以前假设的那样严格。我们的工作突出了汤姆逊散射率在现有哈勃张力中的关键作用，并为粒子模型构建者提供了一条独特的探索途径。
The enduring tension between local and distant measurements of H 0 remains unresolved. It was recently pointed out that cosmic microwave background (CMB) and large-scale structure (LSS) observables are invariant under a uniform rescaling of the gravitational free-fall rates of all species present and the Thomson scattering rate between photons and electrons. We show that a unique variation of the fine-structure constant α and the electron mass me can leverage this scaling transformation to reconcile the CMB and LSS data with a broad spectrum of Hubble constant values, encompassing those inferred from local measurements. Importantly, this study demonstrates that the constraints on the variation of fundamental constants imposed by the specific recombination history are not as stringent as previously assumed. Our work highlights the critical role of the Thomson scattering rate in the existing Hubble tension and offers a distinct avenue of exploration for particle model builders.