L. Viola et R. Onofrio, TESTING THE EQUIVALENCE PRINCIPLE THROUGH FREELY FALLING QUANTUM OBJECTS, Physical review. D. Particles and fields, 55(2), 1997, pp. 455-462
Free fall in a uniform gravitational field is reexamined in the case o
f quantum states with and without a classical analogue. The interplay
between kinematics and dynamics in the evolution of a falling quantum
test particle is discussed allowing for a better understanding of the
equivalence principle at the operational level.