From: *John Clark* <[email protected] <mailto:[email protected]>>
On Sat, Apr 28, 2018 at 7:33 PM, Bruce Kellett <[email protected] <mailto:[email protected]>>wrote:/ > Reversible means unitary evolution. Schrödinger evolution is unitary only with MWI./The only irreversible part is the wave collapse, but the Schrodinger wave equation says nothing about anything collapsing, so "only with MWI" means "without sticking on other stuff that the mathematics doesn't say to get rid of other universes". > // /So reversible implies MWI. And since we don't have access to other MWI/ // [...]Although the other universe is only slightly different from ours and only exists for a short time before it merges back into ours I think we do have access to another universe every time we perform the 2 slit experiment.
Not once you take account of decoherence. You are equivocating on the meaning of "world". Separate "worlds" only emerge after decoherence. Your "relative state" does not permit access to other "worlds".
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