Hotson’s essays move around. Most of my old links are dead.
Here is one site (which misspelled his name) http://issuu.com/scottjenson/docs/d._l._hoston_-_dirac_s_equation_and/1 From: Bob Cook What's an epo field? The same as the Dirac sea? What do the letter stand for? This is essentially why Don Hotson calls the Dirac “sea” the “BEC” instead of the epo field these days. … as in the “original BEC” which is of course a dense superfluid… From: MarkI-Zeropoint Some of the ol' time Vorts will remember how I've been ranting for years on how the vacuum is a near fricionless fluid under extreme pressure... well, the theorists are finally coming around... they got the nearly frictionless part in, now all that's left is to add some 'pressure', and voila! -Mark Iverson Liquid spacetime: A very slippery superfluid, that's what spacetime could be like http://phys.org/news/2014-04-liquid-spacetime-slippery-superfluid.html "If spacetime is a kind of fluid, then we must also take into account its viscosity and other dissipative effects, which had never been considered in detail". Liberati and Maccione catalogued these effects and showed that viscosity tends to rapidly dissipate photons and other particles along their path, "And yet we can see photons travelling from astrophysical objects located millions of light years away!" he continues. "If spacetime is a fluid, then according to our calculations it must necessarily be a superfluid. This means that its viscosity value is extremely low, close to zero". http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.151301
