论文标题

用大规模结构来限制早期的深色能量

Constraining Early Dark Energy with Large-Scale Structure

论文作者

Ivanov, Mikhail M., McDonough, Evan, Hill, J. Colin, Simonović, Marko, Toomey, Michael W., Alexander, Stephon, Zaldarriaga, Matias

论文摘要

一个类似于$ \ sim 10 \%$的斧头场的宇宙能量密度,靠近物质辐射平等是解决哈勃张力的候选人。这是“早期的暗能量”(EDE)模型。但是,如Hill等人所示。 (2020年),该模型无法同时解决哈勃张力,并保持了宇宙微波背景(CMB)和大规模结构(LSS)数据的良好拟合度。在这里,我们使用红移空间星系聚类数据来增强对EDE模型的约束。我们根据LSS的有效田间理论(EFT),使用Baryon振荡光谱调查(BOSS)的全形功率谱可能性进行了首次EDE分析。与仅主要CMB数据相比,EDE分析中的这种可能性在$ H_0 $上产生了$ 25 \%$的更严格的错误栏,$ H_0 = 68.54^{+0.52} _ { - 0.95} $ km/s/s/s/s/mpc($ 68 \%$ cl)。此外,我们将EDE的最大分数能量贡献限制为$ f _ {\ rm eDe} <0.072 $($ 95 \%$ cl)。我们明确表明,EFT老板的可能性比标准老板的可能性要高得多。包括来自光度LSS调查的更多信息,约束范围较窄,$ 20 \%$,产生$ H_0 = 68.73^{+0.42} _ { - 0.69} $ km/s/s/mpc($ 68 \%$ cl)和$ f _ {\ rm Ede} <0.053 $($ cl)这些界限是在不包括本地宇宙$ H_0 $数据的情况下获得的,即使在EDE模型中,它也与CMB和LSS持强烈张力。我们还驳斥了MCMC对EDE的分析,这些EDE省略了从组合数据集中产生误导后代的SH0ES。最后,我们证明了即将进行的欧几里得/DESI样光谱星系调查可以大大改善EDE的约束。我们得出的结论是,当前数据排除了EDE模型作为哈勃张力的分辨率,并且未来的LSS调查可以关闭该模型的剩余参数空间。

An axion-like field comprising $\sim 10\%$ of the energy density of the universe near matter-radiation equality is a candidate to resolve the Hubble tension; this is the "early dark energy" (EDE) model. However, as shown in Hill et al. (2020), the model fails to simultaneously resolve the Hubble tension and maintain a good fit to both cosmic microwave background (CMB) and large-scale structure (LSS) data. Here, we use redshift-space galaxy clustering data to sharpen constraints on the EDE model. We perform the first EDE analysis using the full-shape power spectrum likelihood from the Baryon Oscillation Spectroscopic Survey (BOSS), based on the effective field theory (EFT) of LSS. The inclusion of this likelihood in the EDE analysis yields a $25\%$ tighter error bar on $H_0$ compared to primary CMB data alone, yielding $H_0 = 68.54^{+0.52}_{-0.95}$ km/s/Mpc ($68\%$ CL). In addition, we constrain the maximum fractional energy density contribution of the EDE to $f_{\rm EDE} < 0.072$ ($95\%$ CL). We explicitly demonstrate that the EFT BOSS likelihood yields much stronger constraints on EDE than the standard BOSS likelihood. Including further information from photometric LSS surveys,the constraints narrow by an additional $20\%$, yielding $H_0 = 68.73^{+0.42}_{-0.69}$ km/s/Mpc ($68\%$ CL) and $f_{\rm EDE}<0.053$ ($95\%$ CL). These bounds are obtained without including local-universe $H_0$ data, which is in strong tension with the CMB and LSS, even in the EDE model. We also refute claims that MCMC analyses of EDE that omit SH0ES from the combined dataset yield misleading posteriors. Finally, we demonstrate that upcoming Euclid/DESI-like spectroscopic galaxy surveys can greatly improve the EDE constraints. We conclude that current data preclude the EDE model as a resolution of the Hubble tension, and that future LSS surveys can close the remaining parameter space of this model.

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