-----Original Message----- >Since bosons can occupy the same place
RVS: No they can't. They can occupy the same quantum state, that is not the same thing as the same physical location. Robin, We have been through this before. Some bosons, for instance photons, can and do occupy the same space since they do not repel each other outside of Bose-Einstein statistics ... google "squeezed coherent state"... Massive bosons such as helium would not occupy the same space, but that is for another reason (interatomic forces, such that gains from the B-E statistics cannot overcome a prohibitive electrostatic potential) ... and thus bosonic condensed helium will remain about the same density as in the liquid non-bosonic state. However, dense hydrogen, if it becomes bosonic in the inverted Rydberg sense (as Miley suggests) is far denser than liquid hydrogen or liquid helium - and thus many atoms can appear to occupy the space which a single atom of normal density would occupy. Technically, that increased density is not due to Bose-Einstein statistics, but objectively the result is the same.
