Plasmons, Gauge Invariance, and Mass by Philip Warren Anderson (source code)

= Plasmons, Gauge Invariance, and Mass by Philip Warren Anderson
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{tag=Work by Philip Warren Anderson}
{title2=1963}

Physical Review 130, 439–442. The <superconductivity> and <plasmon> example explains why a charged system need not retain the massless spectrum of its uncoupled matter theory. https://doi.org/10.1103/PhysRev.130.439