Strong Redshift Evolution of Non-Gaussian Vorticity in Galaxy Velocity Fields: Bispectral Evidence for Beyond-ΛCDM Physics from 2.8M SDSS Galaxies
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| Formato: | Recurso digital |
| Lenguaje: | inglés |
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2025
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| _version_ | 1866901198678786048 |
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| author | Vallejos, Omar Ariel |
| author_facet | Vallejos, Omar Ariel |
| contents | <p>Problem: The $\Lambda$CDM model predicts smooth structure evolution from Gaussian initial conditions. Method: Bispectral analysis of velocity dispersion (VDISP) in 2.8M SDSS DR17 galaxies using open-source Rust/Python code. Finding: 77.3x increase in non-Gaussianity between $z\sim0.1$ and $z\sim0.7$, incompatible with $\Lambda$CDM. Interpretation: Signature of primordial vorticity in early cosmic plasma. Implication: Requires extension of $\Lambda$CDM with primordial vector fields.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_17304825 |
| institution | Zenodo |
| language | eng |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Strong Redshift Evolution of Non-Gaussian Vorticity in Galaxy Velocity Fields: Bispectral Evidence for Beyond-ΛCDM Physics from 2.8M SDSS Galaxies Vallejos, Omar Ariel <p>Problem: The $\Lambda$CDM model predicts smooth structure evolution from Gaussian initial conditions. Method: Bispectral analysis of velocity dispersion (VDISP) in 2.8M SDSS DR17 galaxies using open-source Rust/Python code. Finding: 77.3x increase in non-Gaussianity between $z\sim0.1$ and $z\sim0.7$, incompatible with $\Lambda$CDM. Interpretation: Signature of primordial vorticity in early cosmic plasma. Implication: Requires extension of $\Lambda$CDM with primordial vector fields.</p> |
| title | Strong Redshift Evolution of Non-Gaussian Vorticity in Galaxy Velocity Fields: Bispectral Evidence for Beyond-ΛCDM Physics from 2.8M SDSS Galaxies |
| url | https://doi.org/10.5281/zenodo.17304825 |