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Early dark energy resolution to the Hubble tension in light of weak lensing surveys and lensing anomalies
Physical Review D ( IF 4.6 ) Pub Date : 2021-03-02 , DOI: 10.1103/physrevd.103.063502
Riccardo Murgia , Guillermo F. Abellán , Vivian Poulin

A constant early dark energy (EDE) component contributing a fraction fEDE(zc)10% of the energy density of the universe around zc3500 and diluting as or faster than radiation afterwards, can provide a simple resolution to the Hubble tension, the 5σ discrepancy—in the ΛCDM context—between the H0 value derived from early- and late-universe observations. However, it has been pointed out that including Large-Scale Structure (LSS) data, which are in 3σ tension with ΛCDM and EDE cosmologies, might break some parameter degeneracy and alter these conclusions. We reassess the viability of the EDE against a host of high- and low-redshift measurements, by combining LSS observations from recent weak lensing (WL) surveys with CMB, baryon acoustic oscillation (BAO), growth function (FS) and Supernova Ia (SNIa) data. Introducing a model whose only parameter is fEDE(zc), we report in agreement with past work a 2σ preference for nonzero fEDE(zc) from Planck CMB data alone, while the tension with the local H0 measurement from sh0es is reduced below 2σ. Adding BAO, FS and SNIa does not affect this conclusion, while the inclusion of a prior on H0 from sh0es increase the preference for EDE over ΛCDM to the 3.6σ level. After checking the EDE nonlinear matter power spectrum as predicted by standard semi-analytical algorithms via a dedicated set of N-body simulations, we test the 1-parameter EDE cosmology against WL data. We find that it does not significantly worsen the fit to the S8 measurement as compared to ΛCDM, and that current WL observations do not exclude the EDE resolution to the Hubble tension. We also caution against the interpretation of constraints obtained from combining statistically inconsistent datasets within the ΛCDM cosmology. In light of the CMB lensing anomalies, we show that the lensing-marginalized CMB data also favor nonzero fEDE(zc) at 2σ, predicts H0 in 1.4σ agreement with sh0es and S8 in 1.5σ and 0.8σ agreement with kids-viking and des respectively. There still exists however a 2.5σ tension with the joint results from kids-viking and des. With an eye on Occam’s razor, we finally discuss promising extensions of the EDE cosmology that could allow us to fully restore cosmological concordance.

中文翻译:

鉴于弱镜头调查和镜头异常,早期的暗能量分辨率可解决哈勃张力问题

恒定的早期暗能量(EDE)成分贡献了一部分 F电子数据交换žC10 周围宇宙的能量密度 žC3500 然后稀释或辐射得比辐射快,可以为哈勃张力提供一个简单的解决方案, 5σ 差异-在 Λ清洁发展机制 上下文之间 H0从早期和晚期宇宙观测中得出的价值。但是,已经指出,包括大型结构(LSS)数据,这些数据位于3σ 紧张 Λ清洁发展机制和EDE宇宙学,可能会破坏某些参数的简并性并改变这些结论。我们结合最近的弱透镜(WL)勘测的LSS观测值与CMB,重子声振荡(BAO),生长函数(FS)和超新星Ia( SNIa)数据。引入唯一参数为的模型F电子数据交换žC,我们同意与过去的工作进行合作 2个σ 非零偏好 F电子数据交换žC仅从普朗克CMB数据来看,而与当地的紧张关系H0sh 0 es的测量值减少到以下2个σ。添加BAO,FS和SNIa不会影响此结论,而将先前的H0sh 0 es开始增加对EDE的偏好Λ清洁发展机制3.6σ等级。在检查标准半解析算法预测的EDE非线性物质功率谱后,通过一组专用的ñ体仿真,我们针对WL数据测试了1参数EDE宇宙学。我们发现它并没有显着恶化与小号8 测量与 Λ清洁发展机制,并且当前的WL观测值并未排除针对哈勃张力的EDE分辨率。我们也告诫不要对通过组合统计内不一致的数据集而获得的约束进行解释。Λ清洁发展机制宇宙学。鉴于CMB镜头异常,我们显示镜头边缘CMB数据也倾向于非零F电子数据交换žC2个σ,预测 H01.4σsh 0 es达成协议,并且小号81.5σ0.8σk i ds的协议-分别是维京人和des。但是仍然存在2.5σ张力与从关节结果ķDS -海盗DES。最后,我们着眼于Occam的剃刀,讨论了EDE宇宙学的有希望的扩展,这些扩展可能使我们能够完全恢复宇宙学的一致性。
更新日期:2021-03-02
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