I remember this homework assignment I did a while back, where we "found" the wave function of a particle in a double potential well. The distance between them was variable and we found that as the distance decreased, the energy of the system went down. This would suggest a force pulling the two wells together right? I know this doesn't explain repelling forces at all, but wouldn't this "work" as an explanation of a force like gravity? treat composite particles as potential wells, and quarks as particles with a wave function that extends to all the other wells (its incredibly small everywhere but the particle its in). Particles made of quarks would feel a weak attractive force to each other. I doubt this actually works to explain gravity, and maybe the quark example is ridiculous since their wave function is pretty confined. However, anything that acts a well would have this attractive force wouldnt it?