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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.19301330 |
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Sommario:
- <p>Standard cosmology requires two invisible substances — dark matter to explain gravitational lensing and galaxy dynamics, and dark energy to explain the apparent acceleration of cosmic expansion. Neither has been directly detected despite decades of searching. This paper demonstrates that both phenomena arise from a single physical mechanism: the gravitational lensing of the quantum field density baseline ρ₀ in the FIGID (Field Intrinsic Gravity Induced Density) framework.</p> <p>At galaxy scales, ρ₀ field density gradients produce lensing that matches SDSS galaxy-galaxy weak lensing observations to 99% accuracy with zero free parameters (Markham 2026). This paper extends the same mechanism to cosmological scales. Light traveling through the large-scale structure of the universe encounters systematic defocusing from ρ₀ field gradients in the extended gradient regions surrounding mass concentrations. Because ρ ≥ ρ₀ everywhere — a fundamental constraint of the FIGID field — the density contrast is asymmetric: overdensities can be arbitrarily large, but underdensities are bounded. This asymmetry, combined with the negative-definite squared-gradient term in the Laplacian of the FIGID effective potential, produces systematic net defocusing along cosmological lines of sight, making distant Type Ia supernovae appear dimmer than expected and mimicking accelerating expansion.</p> <p>A quantitative model calibrated against the SDSS lensing result demonstrates that the sign of the effect is defocusing (derived from the field equations), the scaling is consistent with the rms convergence from large-scale structure, and the magnitude (κ ≈ −0.02 at z ~ 0.5) matches the observed supernova dimming with an order-unity efficiency factor rather than a fine-tuned one. Existing observations already provide support: Shah, Lemos & Lahav (2022) detected a 3.6σ correlation between supernova Hubble residuals and line-of-sight convergence using the Pantheon sample, and the DES 5-year supernova analysis explicitly finds that the majority of lines of sight experience mild demagnification.</p> <p>The paper makes a specific, falsifiable prediction: supernova luminosity residuals should correlate with line-of-sight weak lensing convergence maps. The DECADE+DES Y3 convergence maps, covering 13,000 deg² from 270 million galaxies, now overlap extensively with supernova survey footprints, making this test feasible with existing data. This cross-correlation signature is unique to field-density lensing and is not predicted by ΛCDM with separate dark matter and dark energy. </p>