| _version_ | 1866901965834813440 |
|---|---|
| author | Santos OLIVEIRA, JOHN wayni |
| author_facet | Santos OLIVEIRA, JOHN wayni |
| contents | <p>We propose a minimal extension to the standard ΛCDM model based on the emergence of regime-dependent structural residuals in the matter power spectrum. Instead of introducing new fields or modifying gravity, we interpret observed deviations as a structural consequence of the breakdown of the linear perturbative regime.</p> <p>We introduce the Regime-Dependent Structural Saturation (RDSS) mechanism, under which nonlinear mode coupling induces a localized enhancement of power around a characteristic scale k*. This effect is modeled as a smooth residual term applied to the ΛCDM power spectrum.</p> <p>The framework preserves the large-scale success of ΛCDM while naturally accounting for small-scale discrepancies and high-redshift observations, including recent results from the James Webb Space Telescope.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_19886152 |
| institution | Zenodo |
| language | eng |
| publishDate | 2026 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Regime-Dependent Structural Residuals in ΛCDM: A Minimal Extension from Structural Saturation Santos OLIVEIRA, JOHN wayni cosmology LambdaCDM matter power spectrum nonlinear structure formation large scale structure <p>We propose a minimal extension to the standard ΛCDM model based on the emergence of regime-dependent structural residuals in the matter power spectrum. Instead of introducing new fields or modifying gravity, we interpret observed deviations as a structural consequence of the breakdown of the linear perturbative regime.</p> <p>We introduce the Regime-Dependent Structural Saturation (RDSS) mechanism, under which nonlinear mode coupling induces a localized enhancement of power around a characteristic scale k*. This effect is modeled as a smooth residual term applied to the ΛCDM power spectrum.</p> <p>The framework preserves the large-scale success of ΛCDM while naturally accounting for small-scale discrepancies and high-redshift observations, including recent results from the James Webb Space Telescope.</p> |
| title | Regime-Dependent Structural Residuals in ΛCDM: A Minimal Extension from Structural Saturation |
| topic | cosmology LambdaCDM matter power spectrum nonlinear structure formation large scale structure |
| url | https://doi.org/10.5281/zenodo.19886152 |