Even if it had a rest frame, Schrödinger is a pain. An object at full rest is according to its wave/path equation literally everywhere at all times. However s

Even if it had a rest frame, Schrödinger is a pain. An object at full rest is according to its wave/path equation literally everywhere at all times. However superconductivity has a bunch of truck sized holes for this. Specifically we don't quite understand Bose-Einstein condensate completely. Funky entities like time crystals appear in the mathematics, etc.