Everyone wants something better than ΛCDM

The current cosmological paradigm, ΛCDM, is characterized by its expansive description of the history of the Universe, its deep connections to particle physics and the large quantities of data that support it. Nonetheless, ΛCDM'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 not the final cosmological theory and they are anxious to see it replaced by something better! I review the status of ΛCDM, provide my views on what "better" might look like, and discuss the role that the "Hubble tension" might play in moving beyond ΛCDM.

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Publication Details

Journal
Proceedings of the National Academy of Sciences
Published
2026-02-13
DOI
https://doi.org/10.1073/pnas.2526436123
Primary Topic
Cosmology and Gravitation Theories
Type
article
Field-Weighted Citation Impact
0.00
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article

Everyone wants something better than ΛCDM

Michael S. Turner
Proceedings of the National Academy of Sciences
Cosmology and Gravitation Theories
article

Everyone wants something better than ΛCDM

Michael S. Turner
article en

Abstract

The current cosmological paradigm, ΛCDM, is characterized by its expansive description of the history of the Universe, its deep connections to particle physics and the large quantities of data that support it. Nonetheless, ΛCDM'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 not the final cosmological theory and they are anxious to see it replaced by something better! I review the status of ΛCDM, provide my views on what "better" might look like, and discuss the role that the "Hubble tension" might play in moving beyond ΛCDM.

Proceedings of the National Academy of SciencesVol. 123(8)
Institute of Astronomy and Astrophysics, Academia Sinica (TW), University of California System (US), University of Chicago (US), Kavli Institute for Particle Astrophysics and Cosmology (US), Netherlands Institute for Radio Astronomy (NL)
Reduced inequalities
Openalex Percentile: Top 55%
Cosmology and Gravitation Theories
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