Thanks for link. I think that communication is impossible when branches are completely separated, but the existence of the trapped ion prevents this complete separation. In other words, the separation has not ended yet in our case and the whole system has to be regarded as one system which evolves linearly.
“Branch separation” is itself contradictory concept as different understanding of what is it exists. There are different interpretations of MWI, good overview here: https://iep.utm.edu/everett/
What I mean is that for branches to affect each other, the branches must become completely not separated: every difference between the branches must be erased, including the ion and also the atoms in all the observers. This makes communication meaningless, because there’s no longer anything the sender knows that the receiver doesn’t also know.
I understood your idea. From early Plaga point of view the branches are in the process of separation, so they are not yet real branches and this allows short period of communication. I would be interested to see experimental test.
Thanks for link. I think that communication is impossible when branches are completely separated, but the existence of the trapped ion prevents this complete separation. In other words, the separation has not ended yet in our case and the whole system has to be regarded as one system which evolves linearly.
“Branch separation” is itself contradictory concept as different understanding of what is it exists.
There are different interpretations of MWI, good overview here: https://iep.utm.edu/everett/
For example, if a atom decay, do branches separate everywhere in the universe with superliminal speed? Or branches are separated when we observe different outcomes? See recent discussion Is Branching Truly Global? From Cambridge Changes to Oxford Changes in the Many-Worlds Interpretation
What I mean is that for branches to affect each other, the branches must become completely not separated: every difference between the branches must be erased, including the ion and also the atoms in all the observers. This makes communication meaningless, because there’s no longer anything the sender knows that the receiver doesn’t also know.
I understood your idea. From early Plaga point of view the branches are in the process of separation, so they are not yet real branches and this allows short period of communication. I would be interested to see experimental test.