quimikcasera369-ai/emergent-gravity-coherence-of-the-de-sitter-: Emergent Gravitational Coherence and Galactic Dynamics Without Particle Dark Matter

[1.] Introduction We present an effective scalar framework in which the observed low-acceleration anomalies of galaxies emerge from gravitational coherence rather than from particle dark matter halos. The theory combines a nonlinear kinetic sector with environmental screening, allowing local recovery of General Relativity while generating modified dynamics in diffuse galactic environments. A characteristic acceleration scale naturally appears as g_crit = cH0 / (4π²√3), linking galactic phenomenology to cosmological expansion. In the weak-field, low-acceleration regime, the model yields the effective radial acceleration law a = a_N + √(a_N g_crit), which reproduces asymptotically the baryonic Tully-Fisher relation v⁴ = G M_bar g_crit. At high densities, thin-shell screening suppresses scalar forces and preserves Solar-System bounds. The framework therefore interpolates between screened local gravity and emergent large-scale galactic dynamics within a single effective description. Full Changelog: https://github.com/quimikcasera369-ai/emergent-gravity-coherence-of-the-de-sitter-/commits/V1