标题： 质疑宇宙加速膨胀的DESI：宇宙的大停滞 显示英文标题

标题： Questioning Cosmic Acceleration with DESI: The Big Stall of the Universe

摘要： 现代宇宙学最重要的发现之一是宇宙加速膨胀。 然而，我们发现，在统计上更偏好的Chevallier-Polarski-Linder（CPL）情景下，今天的宇宙可能会在宇宙微波背景、Ia型超新星和DESI对重子声学振荡的新测量数据下相对于$\Lambda$CDM模型减速。 使用各种数据集，在超过$5\,\sigma$的置信水平下，我们证明了宇宙在其演化过程中经历了三次减速，并最终达到“大停滞”的状态，该状态预测：（i）宇宙将在遥远的未来突然停止；（ii）其最终命运由暗物质主导，而不是暗能量；（iii）它最终仅保留极小部分的暗能量，但会产生极大的压力。 我们的发现深刻挑战了宇宙加速膨胀的既定理解，并丰富了我们对宇宙演化的认识。 显示英文摘要

摘要： One of the most important discoveries in modern cosmology is cosmic acceleration. However, we find that today's universe could decelerate in the statistically preferred Chevallier-Polarski-Linder (CPL) scenario over the $\Lambda$CDM model by cosmic microwave background, type Ia supernova and DESI's new measurements of baryon acoustic oscillations. Using various datasets, at a beyond $5\,\sigma$ confidence level, we demonstrate that the universe experiences a triple deceleration during its evolution and finally reaches the state of the ``Big Stall", which predicts that: (i) the universe suddenly comes to a halt in the distant future; (ii) its eventual destiny is dominated by dark matter rather than dark energy ; (iii) it ultimately retains an extremely small fraction of dark energy but exerts an extremely large pressure. Our findings profoundly challenge the established understanding of cosmic acceleration and enrich our comprehension of cosmic evolution.