论文标题

晚期的深色能量转变会增加哈勃常数吗?

Can Late Dark Energy Transitions Raise the Hubble constant?

论文作者

Benevento, Giampaolo, Hu, Wayne, Raveri, Marco

论文摘要

在红移$ z \ ll 0.1 $处的深色深度过渡可以提高Hubble常数的预测价值,$ 74.03 \ pm 1.42 $(km s $^{ - 1} $ MPC $^{ - 1})$或更多,同时为$ 6.73 $ CDM $ CDM $ cds提供,特别是从宇宙微波背景和重子声学振荡中。但是,这些模型并不能完全解决距离梯子和高红移观测之间的真正张力来源:超新星亮度的局部校准充分流入了哈勃流中。当以这种方式测试通过将SH0校准转移到万神殿超新星数据集时,这种过渡提高哈勃常数的能力将减少到$ 69.17 \ pm 1.09 $。在测试任何可以在红移或局部空隙模型中产生类似精细特征的动态暗能模型时,还应使用此类分析。

Late times dark energy transitions at redshifts $z \ll 0.1$ can raise the predicted value of the Hubble constant to the SH0ES value, $74.03\pm 1.42$ (km s$^{-1}$ Mpc$^{-1})$ or more, while providing an equally good fit as $Λ$CDM at $67.73 \pm 0.41$ to higher redshift data, in particular from the cosmic microwave background and baryon acoustic oscillations. These models however do not fully resolve the true source of tension between the distance ladder and high redshift observations: the local calibration of supernovae luminosities well out into the Hubble flow. When tested in this manner by transferring the SH0ES calibration to the Pantheon supernovae dataset, the ability of such transitions to raise the Hubble constant is reduced to $69.17 \pm 1.09$. Such an analysis should also be used when testing any dynamical dark energy model which can produce similarly fine features in redshift or local void models.

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