Challenges to the Lambda CDM Cosmology
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866912070870499328 |
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| author | Efstathiou, George |
| author_facet | Efstathiou, George |
| contents | Observations of the cosmic microwave backgroundradiation are described to remarkable accuracy by the six-parameterLambda CDM cosmology. However, the key ingredients of this model, namely dark matter, dark energy and cosmic inflation are not understood at a fundamental level. It is therefore important to investigate tensions between the CMB and other cosmological probes. I will review aspects of tensions with direct measurements of the Hubble constant H_0, measurements of weak gravitational lensing, and the recent hints of evolving dark energy reported by the Dark Energy Spectroscopic Instrument (DESI) collaboration. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_12106 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Challenges to the Lambda CDM Cosmology Efstathiou, George Cosmology and Nongalactic Astrophysics Observations of the cosmic microwave backgroundradiation are described to remarkable accuracy by the six-parameterLambda CDM cosmology. However, the key ingredients of this model, namely dark matter, dark energy and cosmic inflation are not understood at a fundamental level. It is therefore important to investigate tensions between the CMB and other cosmological probes. I will review aspects of tensions with direct measurements of the Hubble constant H_0, measurements of weak gravitational lensing, and the recent hints of evolving dark energy reported by the Dark Energy Spectroscopic Instrument (DESI) collaboration. |
| title | Challenges to the Lambda CDM Cosmology |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2406.12106 |