Semi-Dirac Quanta Soup: A Radiating Push-Gravity Theory with Anisotropic Dispersion, Oscillating Cosmology, and Orientation-Dependent Black-Hole Phenomena

A classical push-gravity theory is presented in which gravitational attraction emerges from anisotropic shielding of a pervasive repulsive “quanta soup” whose quasiparticles follow the semi-Dirac dispersion relation observed in ZrSiS (Phys. Rev. X 14, 041052, 2024). The soup is massless and linear along one preferred direction and massive in the perpendicular plane. With only one free coupling constant, the model reproduces Newtonian gravity on average, yields MOND-like dynamics in galactic outskirts, drives cosmic expansion via a natural 15–20 Gyr oscillation, and predicts five sharp, near-term testable deviations from General Relativity: orientation-dependent black-hole shadows (EHT), collimated radial Hawking-like jets, 15–90 % anisotropic gravitational-wave inspiral rates (LIGO/Virgo/KAGRA), velocity-dependent perpendicular drag, and subtle time-dilation anisotropy. All predictions derive from a single experimentally confirmed dispersion relation and Le Sage’s 18th-century idea that attraction is the shadow of universal repulsion.