I wrote: I gather that the idea is that ... some kind of shell model [is involved]. >
Another analogy that might be relevant -- there could be different "isotopes" for protons and neutrons, e.g., bound states with differing numbers of quarks. Eric
I wrote: I gather that the idea is that ... some kind of shell model [is involved]. >
Another analogy that might be relevant -- there could be different "isotopes" for protons and neutrons, e.g., bound states with differing numbers of quarks. Eric