On Fri, Mar 18, 2016 at 3:22 PM, <mix...@bigpond.com> wrote: >Does this require that the vacuum be something other than a frictionless > >superfluid? > > Not sure about that (literally). How do you feel about a solid lattice > rather > than a superfluid? >
I feel doubtful, although I have no strong opinion. The contrarian in me would be delighted for a viscous spacetime to be discovered, as that would be suggestive of an ether. That's different from a solid lattice, although it might accomplish the same thing. Eric
