论文标题
哈勃在低红移滚动
Hubble Sinks In The Low-Redshift Swampland
论文作者
论文摘要
哈勃常数$ H_0 $的本地确定比基于CMB和$λ$ CDM更高的值。通过与模型无关的扩展，我们表明，低红移（$ z \ Lessim 0.7 $）数据包括包括巴里昂声学振荡（BAO），宇宙天元计和IA型超新星相对于$λ$ cdm的$ h_0 $ h_0 $。此外，我们确认与暗物质的指数耦合不能在相同的红移范围内改变这一结论。我们的结果使以物质主导的时代的耦合（即使在黑暗时代）可能会节省$ h_0 $的耦合，从而使$ H_0 $从沉没中陷入弦乐理论中。
Local determinations of the Hubble constant $H_0$ favour a higher value than Planck based on CMB and $Λ$CDM. Through a model-independent expansion, we show that low redshift ($z \lesssim 0.7$) data comprising baryon acoustic oscillations (BAO), cosmic chronometers and Type Ia supernovae has a preference for Quintessence models that lower $H_0$ relative to $Λ$CDM. In addition, we confirm that an exponential coupling to dark matter cannot alter this conclusion in the same redshift range. Our results leave open the possibility that a coupling in the matter-dominated epoch, potentially even in the dark ages, may yet save $H_0$ from sinking in the string theory Swampland.
