标题： 全能暗能量的更新限制：基于CMB和BAO数据的综合分析 显示英文标题

标题： Updated Constraints on Omnipotent Dark Energy: A Comprehensive Analysis with CMB and BAO Data

摘要： 在这项工作中，我们提出了对DMS20暗能量模型参数空间的更新观测限制，该模型属于全能暗能量（ODE）类。 我们的分析结合了多个CMB数据集——包括来自普朗克卫星（PL18）、南极望远镜（SPT）和威尔金森微波各向异性探测器（WMAP）的测量数据——以及来自Pantheon+目录（PP）的Ia型超新星数据和来自DESI和SDSS巡天的重子声波振荡（BAO）测量数据。 我们发现某些数据组合，如SPT+WMAP+BAO和PL18+BAO，可以将$H_0$张力降低到$1\sigma$以下，但伴随着相当大的不确定性。 这些相同的数据组合还预测了结构增长受到抑制，与Planck-only约束相比，更倾向于较低的$S_8$值。 然而，PP数据的加入恢复了$H_0$的张力。 为了全面了解ODE现象学，我们还研究了其能量密度的演化，重点强调其在低红移下的动力学行为。 我们的结果显示，在单一膨胀历史中通常会出现多次幻影划分线（PDL）交叉，这种行为与单标量场情景不兼容。 显示英文摘要

摘要： In this work, we present updated observational constraints on the parameter space of the DMS20 dark energy model, a member of the omnipotent dark energy (ODE) class. Our analysis combines multiple CMB datasets - including measurements from the Planck satellite (PL18), the South Pole Telescope (SPT), and the Wilkinson Microwave Anisotropy Probe (WMAP) - with Type Ia supernova data from the Pantheon+ catalog (PP), and baryon acoustic oscillation (BAO) measurements from the DESI and SDSS surveys. We find that certain data combinations, such as SPT+WMAP+BAO and PL18+BAO, can reduce the significance of the $H_0$ tension below $1\sigma$, but with considerably large uncertainties. These same combinations also predict suppressed structure growth, favoring lower values of $S_8$ compared to the Planck-only constraint. However, the inclusion of PP data restores the tension in $H_0$. To provide a comprehensive view of the ODE phenomenology, we also investigate the evolution of its energy density, emphasizing its dynamical behavior at low redshifts. Our results generically exhibit multiple phantom divide line (PDL) crossings in a single expansion history, a behavior that is not compatible with single scalar field scenarios.