schrodingasdawg

Well, they make the same predictions about expected values of observables. In the Heisenberg picture the state of a system has no time dependence—just the operators for the observables evolve. In a sense, it's not completely true that anything you can say in one picture can be said in the other. You can't say "the state ket evolves in time according to Schrodinger's equation" in the Heisenberg picture.

MWI doesn't talk just about expectation values. MWI talks about the universal wave function, and how different worlds exist in the different branches of the wave function. The universe branches into different worlds as time goes on. I'm curious whether anyone could make the case for something like MWI, but without talking about state kets having any time dependence. It seems a very natural and appealing interpretation to me if I stick to the Schrodinger picture, and think of the state ket as a physically real thing, but I honestly can't make heads or tails of what MWI 'means' in the Heisenberg picture.

If I'm not mistaken, you're an advocate of MWI. Do you think MWI sounds as convincing in the Heisenberg picture as it does in the Schrodinger picture? Do you think you'd be able to make the case for MWI while sticking entirely to the Heisenberg picture in your argument?