I try to make a ψ1 + b ψ2 zero at boundaries, not at origin. If the boundaries lie in +- infinity, I have to approximate it by some finite number (when I was doing that last time, I used infinity = 8, it worked well with the respective problem). If this is what you have asked about.
According to normal MWI, there’s a universe in the present that’s just like this one was in the immediate past. Each of them have their own amplitude. If you wanted to calculate the probability of a universe that looks exactly like that, you’d take the probabilities of those universes individually and add them together.
I’m sorry, but I can’t parse the demonstrative pronouns. Please denote the universes by symbols.
I try to make a ψ1 + b ψ2 zero at boundaries, not at origin. If the boundaries lie in +- infinity, I have to approximate it by some finite number (when I was doing that last time, I used infinity = 8, it worked well with the respective problem). If this is what you have asked about.
I’m sorry, but I can’t parse the demonstrative pronouns. Please denote the universes by symbols.