The Lambda Cold Dark Matter (ΛCDM) model, as the standard cosmological model, has been largely consistent with most astronomical observations. However, in recent years, with the advancement of technology, numerous phenomena that contradict its predictions have been discovered. These phenomena suggest that the evolution of the local universe might not entirely follow the ΛCDM model. For example, the Hubble tension implies that there may be a discrepancy in the estimation of the current expansion rate of the Universe; the anisotropic features of the local Universe suggest that the Universe is not entirely isotropic on a local scale; and the dynamic dark energy implies that its equation of state parameter or energy density might vary over time, thereby leading to significant differences between the expansion rates of the universe at different stages and the predictions of the ΛCDM model. These anomalies suggest the possible existence of new physics beyond the standard cosmological model, and this new physics might have a more pronounced impact on the late-time evolution of the universe. Thus, late-universe observations challenge ΛCDM model, indicating that the model requires refinement on local scales while remaining viable on larger ones. Crucially, while this new physics becomes apparent in late-universe observations, its origins may be rooted in much earlier cosmological epochs.
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Jianping Hu
Xuandong Jia
Zhaoyu Zuo
Zhongguo kexue. Wulixue Lixue Tianwenxue
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Hu et al. (Thu,) studied this question.
www.synapsesocial.com/papers/69b606d583145bc643d1d413 — DOI: https://doi.org/10.1360/sspma-2025-0475