Is the vacuum superconducting?

The Meissner effect expelling magnetic fields or confining them in quantized vortex filaments gives the real photon a rest mass inside a material superconductor from the spontaneous breaking of internal local U(1) gauge symmetry. This is a simple precursor to the Higgs mechanism for the emergence of small rest masses of quarks and leptons. The hadrons get even larger rest masses from the zero point vibrations of the quarks confined by gluons in the QCD theory. There may be a similar effect for the geometrodynamic gravity field.
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