Locked Geometric Dark Energy Point: Public Data Comparisons against DESI DR2 + Planck + PantheonPlus
Year: 2026
Type: preprint
Abstract: A locked geometric identification for late-time dark energy is compared against public DESI DR2 + Planck + PantheonPlus data. Values from the golden ratio and the regular pentagon were held fixed before sampling. Zero extra free parameters. Claims that can be stated from the public numbers:• The locked values sit inside the free CPL contour published by DESI on the same data combination and in the preferred quadrant.• At the pivot redshift the locked point is within ~0.3σ of the free best-fit.• The locked crossing redshift lies within roughly 1σ of the free best-fit crossing.• Per-bin DESI DR2 isotropic BAO scales are consistent with the locked history at the level of the published uncertainties.• On the mild ~2.3σ BAO–CMB tension the locked point does not resolve the tension and does not increase it.• The maximum absolute difference from the free CPL best-fit across 0 < z < 3 is ≈ 0.03.• The locked slope is closer to the one-parameter mirage relation than to pure thawing, while using zero extra free parameters.• Secondary observables shift by amounts smaller than published uncertainties. Early-time calibration is left intact.• The locked point remains competitive with flat ΛCDM within normal chain scatter while paying none of the two-parameter penalty of free CPL. These are direct comparisons against published results. They do not replace an independent re-run. The package collects the claims, the geometric origin, comparison graphs, the per-bin BAO table, and the supporting checks in one document.
Author: Jacobs, Daryl
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7225346747