Mechanical Origin of Matter-Antimatter Asymmetry: Primordial Density Gradients in the SSN

This paper provides a purely mechanical solution to the Matter-Antimatter asymmetry problem. Utilizing the Universal Sheet Tension (UST) Model, we propose that the Big Bang was an asymmetric collision between two 2D manifolds of unequal density (Sheet A and Sheet B). We demonstrate that the surplus of matter over antimatter is a deterministic result of the primordial density gradient, which mechanically favored the formation of robust "Primary Wrap" inclusions (matter) over unstable "Reverse Wrap" inclusions (antimatter) during the initial recoil phase.