I understand (well, I eat paste, but I get the general idea) that in theory, if you could accelerate one of the mouths of a traversable wormhole, you could create a time machine because of relativistic time dilation. That makes sense.
Let us postulate that I have a wormhole (in my wardrobe) whose other mouth is connected to a planet (wintery, with talking animals) on the other side of the universe, in a system that moves at relativistic speeds to our own system so that time appears to pass faster there. (Would that mean that our side is the one that was accelerated to match the wardrobe's relative motion to the spot near the lamppost? Sounds like a nightmare to even begin figuring out how to make stargates stay in the same place on a planet...)
My question here is mostly that if you traverse the wormhole, how would you yourself experience that change in acceleration? Can you have one hand in Narnia and the rest of your body on the other side, making that hand age 20 times faster? (I think Niven wrote a story about this once, and it wasn't pretty...) How would the traversal work in general, keeping in mind that this is all highly theoretic in the first place?
As I said, I eat paste. Just some idle discussion to while away the time during a long car ride, and I was wondering if anyone here had any fun input or if I'm completely in the rough here...