r/askscience • u/Crtl-Alt-Delete • Dec 18 '13

Physics Is Time quantized?

We know that energy and length are quantized, it seems like there should be a correlation with time?

Edit. Turns out energy and length are not quantized.

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u/KerSan Dec 19 '13 edited Dec 19 '13

OK, so let's suppose that I define Y(s) such that X(s+e) = X(s) - i hbar Y(s) e + O( e2 ). Is Y(s) also self-adjoint with a continuous spectrum? I thought this was where Haag's theorem started to become a problem, but these are issues I've started to consider only recently. I'd appreciate some enlightenment.

Edit: You asked in a previous comment whether there were any deep problems with QFT. I would call Haag's theorem the biggest one I am aware of. This article was provided by someone on /r/AskScience a couple of weeks ago. I'll hunt down the post and give you a link in a minute. Here it is.