A Microstructural Spacetime Model Based on Density-Driven Internal Contraction

This paper presents a theoretical model of spacetime microstructure based on Density-Driven Internal Contraction (DDIC). The central hypothesis is that internal density gradients, independent of external mass-energy curvature, can induce a self-contracting dynamic that gives rise to geometric structure at sub-Planckian scales. Unlike classical general relativity, which models curvature as a response to external stress-energy, the DDIC framework treats density as a geometric source in itself, internal to the fabric of spacetime. The model introduces a microdynamic process that may underlie emergent metric behavior, causal structure, and topological form. This paper is currently presented as a formal hypothesis and has not yet been tested experimentally. It is shared for theoretical review and academic discussion.