Consider a particle moving in one dimension with V(x) = for x 2/3b2/3/m1/3). (See also Prob. 4.34.)

Question:

Consider a particle moving in one dimension with V(x) = for x 2/3b2/3/m1/3). (See also Prob. 4.34.) Rather amazingly, quantized states of a neutron in the Earth's gravitational field have been observed: See the references in arxiv.org/abs/hep-ph/0602093.