On free fall of quantum matter

We propose an approach that allows to systematically take into account gravity in quantum particle physics. It is based on field theory and the general principle of relativity. These are used build a model for particles curved spacetime. compute by its means deviation from classical geodesic Earth's gravitational field. This shows free fall depends quantum-matter properties. Specifically, we find free-fall universality wave-packet spreading mutually exclusive phenomena. then estimate E\"{o}tv\"{o}s parameter pair atoms freely falling near surface, provided more fundamental than weak equivalence principle.