For the time-energy uncertainty relation, is it or is it possible it could be affected by the refractive index of a material? In other words, if you have a material where the speed of light passing through is slower than in the vacuum, would that affect c^2 in the energy portion of the relation and reduce the energy thus allowing for the time or mass of virtual particles to be higher?

  • $\begingroup$ Explicitly what uncertainty relation are you talking about? In particular how does $c^2$ enter in this? $\endgroup$ – ZeroTheHero Mar 1 at 2:45
  • $\begingroup$ Delta(E)*Delta(t)>=h/4pi $\endgroup$ – Tom Mar 1 at 3:33
  • $\begingroup$ Pray explain how $c^2$ enters in this? We’re talking about energy of a state, not of a particle... (see physics.stackexchange.com/q/365873/36194) $\endgroup$ – ZeroTheHero Mar 1 at 4:36

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