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| Natura: | Recurso digital |
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Zenodo
2026
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| Accesso online: | https://doi.org/10.5281/zenodo.20362772 |
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Sommario:
- <p>If dark energy and dark matter correspond respectively to the vacuum ground-state energy and topological excitations of a single fundamental scalar field (the Ξ-field), then energy exchange between the two is not a phenomenological assumption but a thermodynamic necessity of topological defect relaxation. Starting from this premise, we introduce the settlement relaxation timescale τ_settle—the characteristic time for energy redistribution between different tiers of the Ξ-field—and derive a set of coupled dark-sector evolution equations. This coupling manifests in the cosmological background as three independently testable modifications to standard ΛCDM: (1) the dark energy equation of state w(z) exhibits a characteristic inflection point near cosmic noon (z≈1.5–2.3) correlated with the star formation rate density (SFRD); (2) a measurable w gradient exists between the interior and walls of the KBC void, with amplitude δw≈−0.01 to −0.05; (3) the outer density profiles of dark matter halos (r>r200) deviate systematically from NFW over time. The coupling strength is naturally bounded by the Bekenstein information storage limit to Γ_relax<0.3 H0, compatible in order of magnitude with current observational constraints on interacting dark energy (IDE) models. We provide quantitative amplitudes, redshift dependencies, and explicit falsification conditions for each prediction.</p> <p>dark matter-dark energy coupling, interacting dark energy, topological defect relaxation, Ξ-field, w(z) inflection, KBC void, Hubble tension, dark sector unification, Euclid, DESI</p>