Is something really there?

[questionposter]

Is something technically still existing even when it has 0 energy? I mean I guess if it has 0 energy, it has 0 mass, but if you have something like an "electron field", what is it existing as when it's not oscillating? How would it start some perturbation sequence? Is there some way to force electrons to have the same spin state in the same quantum state and cancel each other out and make them not exist anymore?

Edited April 17, 2012 by questionposter

[pmb]

Is something technically still existing even when it has 0 energy? I mean I guess if it has 0 energy, it has 0 mass, but if you have something like an "electron field", what is it existing as when it's not oscillating? How would it start some perturbation sequence? Is there some way to force electrons to have the same spin state in the same quantum state and cancel each other out and make them not exist anymore?

I'd hazard to guess that if the components of the stress-energy-momentum tensor of an object is not zero then that object exists. This was Einstein's view in that Eintein that if any of the components of that object do not vanish then there is matter in there is region of space where it is not zero. Are you familiar with tensors etc?

Edited May 15, 2012 by pmb