From Clive Bashford
In Rowan Hooper’s article on the multiverse, physicist Seth Lloyd is quoted pondering the notion that multiple worlds are actually out there somewhere, but we cannot access them (27 September, p 32).
Later, Hooper describes the double-slit experiment, in which a photon appears to act like a wave, diffracting at both slits and creating an interference pattern. Hooper says that according to the many-worlds interpretation, the interference pattern comes about when a photon interacts with its clone passing through the other slit in a parallel universe.
This suggests that photons belonging to different universes do interact, therefore we can access other universes.
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