FWIW - this interesting paper turned up just now in pursuit of other models of "mirror hydrogen" (there are many besides the one of Robert Foot, which is the most well-known).
http://arxiv.org/pdf/hep-ph/0111381.pdf Stewart's view seems to be somewhat similar, but now we are presented with an introduction to the desirability of "self-interaction" to explain certain cosmological phenomena - which is poorly defined - despite having a Wiki entry. http://en.wikipedia.org/wiki/Self-interacting_dark_matter In layman's terms, it suggest why cold dark matter has plenty of internal energy. Amazing that cosmologists get away with that kind of speculation simply because disproof is so difficult . but this type of mirror hydrogen would probably not be seen outside of galactic cores. "Self-interacting" sounds a bit like LENR gain on a larger scale however :-) In fact, if we continue with what they are started, there could be a version of mirror hydrogen that can be formed in Solar flares and exist in Earth-like environments, or even be formed in relativistic conditions on Earth. In fact, Randell Mills version of redundant ground states goes part of the way there. The "mirror" symmetry would exist in the negative (reflected) valence and ground states, which can be imagined as a mirror of positive states - but to be complete, this kind of mirror hydrogen would need to be combined with a bit of QCD magic in mirrored quarks - for the self-interaction (even if is of a smaller degree), such as can be inferred from the Mohapatra paper above. It would be nice to see this paper updated within a broader scope. If one accepts cosmological self-interaction, what is prohibit a local version, at least as seen in the Ni-H reaction? It could be a limited variety of "self-interaction" of mirror hydrogen formed in situ and having self-oscillation between highly redundant ground states and QCD color change - in mirrored quarks.
