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arXiv · 2510.05483

Everyone wants something better than $\Lambda$CDM

Michael S. Turner
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Abstract

The current cosmological paradigm, $\Lambda$CDM, is characterized its expansive description of the history of the Universe, its deep connections to particle physics and the large amounts of data that support it. Nonetheless, $\Lambda$CDM's critics argue that it has been falsified or must be discarded for various reasons. Critics and boosters alike do agree on one thing: it is the not the final cosmological theory and they are anxious to see it replaced by something better! I review the status of $\Lambda$CDM, provide my views of the path forward, and discuss the role that the ``Hubble tension'' might play.

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Michael S. Turner. 2025-10-07. Everyone wants something better than $\Lambda$CDM. https://arxiv.org/abs/2510.05483

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