论文标题
振荡宇宙,幻影交叉和哈勃张力
The Oscillatory Universe, phantom crossing and the Hubble tension
论文作者
论文摘要
我们研究了宇宙学模型的有效性与延迟宇宙学观察有关的震荡因子。我们表明,这些模型不仅符合所需的较晚观察性约束,而且还可以减轻哈勃张力。作为该模型的一般特征,哈勃参数在当前时期附近增加,因为其周期性性质表现出幻象性质,从而可以解决与迟到的加速相关的上述问题。
We investigate the validity of cosmological models with an oscillating scale factor in relation to late-time cosmological observations. We show that these models not only meet the required late time observational constraints but can also alleviate the Hubble tension. As a generic feature of the model, the Hubble parameter increases near the current epoch due to its cyclical nature exhibiting the phantom nature allowing to address the said issue related to late time acceleration.