Nitpicking: IIRC Adding 5V everywhere is like multiplying Ψ by expt(i 5V t cte), where t is the time and cte is a constant that may involve c, ℏ, e, and perhaps a number, but I'm too lazy to lookup.
Looking at my comment, it says "multiply each point of the universe by a different complex" it's actually a "event" like in relativity, i.e. (ct, x, y z). This is an easy case where the function you use to multiply does not depend on x, y, z, but only on t.
Looking at my comment, it says "multiply each point of the universe by a different complex" it's actually a "event" like in relativity, i.e. (ct, x, y z). This is an easy case where the function you use to multiply does not depend on x, y, z, but only on t.