I’ve seen a theoretical demonstration of a person shooting themself and creating a sub-dimension that continues on without them yet they carry on forward with memory of their attempted suicide erased.
There is the Buddhists’ reincarnation where in we possess a new born body after waiting for some time in Bardo (the dream realm).
And other demonstrations where we exit this life into a more genuine world to find this was an over-exaggerated parody and demonstration that the genuine external world may also be artificial.