论文标题
真空深色能量和$ H_0 $张力的多个过渡
Multiple transitions in vacuum dark energy and $H_0$ tension
论文作者
论文摘要
我们研究了真空深度密度中多个过渡对$ H_0 $张力问题的影响。我们考虑了一个现象学模型，其中真空能量密度在早期和晚期宇宙中经历了多个转变，并使用CMB+BAO+SN的三组数据来比较模型的预测。瞬态暗能量可以为正（DS样）或负（类似AD）。我们得出的结论是，瞬态延迟广告型真空能量通常会产生较高的$ H_0 $的值，从而减轻$ H_0 $张力。此外，要获得$ h_0 $的值，可与当地宇宙学测量值获得的值相当
We study the effects of multiple transitions in the vacuum dark energy density on the $H_0$ tension problem. We consider a phenomenological model in which the vacuum energy density undergoes multiple transitions in the early as well as the late universe and compare the model's predictions using the three sets of data from CMB+BAO+SN. The transient dark energy can be either positive (dS-like) or negative (AdS-like). We conclude that a transient late-time AdS-type vacuum energy typically yields the higher value of $H_0$ which can alleviate the $H_0$ tension. In addition, to obtain a value of $H_0$ comparable to the value obtained from the local cosmological measurements the spectral index $n_s$ moves towards its Harrison-Zel'dovich scale invariant value
