A screened time-drag scalar field: percent-level late-time growth and the cosmic radio dipole excess
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| Format: | Recurso digital |
| Langue: | anglais |
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2025
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| _version_ | 1866901840635887616 |
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| author | Cooney, Paul |
| author_facet | Cooney, Paul |
| contents | <p><strong>This repository contains the full LaTeX source, figures, and appendices for a minimal screened scalar–tensor model that modifies late-time structure formation at the percent level while preserving the exact ΛCDM background expansion.</strong><br>The model introduces a density-dependent kinetic term (“time-drag”) that yields both (i) a ∼1% enhancement of the linear growth rate at low redshift and (ii) a non-kinematic contribution to the cosmic radio/mid-infrared dipole, naturally aligned with the CMB dipole and consistent with recent observations.</p> <p>The archive includes the main 7-page manuscript, 2 figures, and 4 technical appendices detailing the k-essence completion, gravitational slip, derivation of the background scaling, and thermodynamic interpretation. All files are provided in a clean, reproducible format suitable for peer review and long-term citation.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_17693720 |
| institution | Zenodo |
| language | eng |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | A screened time-drag scalar field: percent-level late-time growth and the cosmic radio dipole excess Cooney, Paul modified gravity cosmology scalar-tensor theory kinetic screening structure growth growth tension radio dipole cosmic dipole large-scale structure late-time anomalies ΛCDM extensions time-drag field <p><strong>This repository contains the full LaTeX source, figures, and appendices for a minimal screened scalar–tensor model that modifies late-time structure formation at the percent level while preserving the exact ΛCDM background expansion.</strong><br>The model introduces a density-dependent kinetic term (“time-drag”) that yields both (i) a ∼1% enhancement of the linear growth rate at low redshift and (ii) a non-kinematic contribution to the cosmic radio/mid-infrared dipole, naturally aligned with the CMB dipole and consistent with recent observations.</p> <p>The archive includes the main 7-page manuscript, 2 figures, and 4 technical appendices detailing the k-essence completion, gravitational slip, derivation of the background scaling, and thermodynamic interpretation. All files are provided in a clean, reproducible format suitable for peer review and long-term citation.</p> |
| title | A screened time-drag scalar field: percent-level late-time growth and the cosmic radio dipole excess |
| topic | modified gravity cosmology scalar-tensor theory kinetic screening structure growth growth tension radio dipole cosmic dipole large-scale structure late-time anomalies ΛCDM extensions time-drag field |
| url | https://doi.org/10.5281/zenodo.17693720 |