On the subject of superfluidity in hydrogen... Recent work at Göttingen in Germany has revealed convincing evidence for superfluidity in liquid hydrogen. Hydrogen is the only liquid other than helium to exhibit this quantum behavior. This does not happen with the bulk liquid but does happen with nano-drops. That is consistent with Holmlid's claim, except he see the superfluid at higher temps.
"It should be emphasized that superfluidity in a shell containing about 15 hydrogen molecules does not necessarily mean that the phenomenon will ever be observed in bulk liquid. Indeed, it probably will not, due to the difficulty of maintaining the liquid state at low enough temperatures. But the results for droplets seem to have given us a new superfluid, presumably quite different from the liquid helium with which low-temperature physicists are so familiar." BTW it is possible that there is trade secret involved here to reach the superfluidity state. One possibility would be to have a precise ratio of hydrogen to helium, say 16:1 - such that the nano-droplet is formed around a helium core and the entire unit functioned as a boson. Another possibility combines the "binuclear atom" and the nano-droplet into a triple bosonic nano-droplet, which is superfluid at high temps. Holmlid shows a linear particle. The nano-droplet resembles the quantum dot in some respects. The jury is still out.
