On 10/30/2011 5:13 PM, Nick Prince wrote:
On Oct 30, 8:56 pm, Russell Standish<li...@hpcoders.com.au> wrote:
My point about the unitary evolution was that the clicking of the
Geiger counter is not a unitary process - and until you hear it, you remain in
- Show quoted text -
I thought that in the everett interpretation everything was unitary?
Right. In Everett's interpretation Nick's consciousness exists in many superpositions and
there must be some additional mechanism of consciousness that accounts for the separation
of these conscious streams of experience. This would be the same mechanism that collapses
the wave function in the Copenhagen interpretation - something like decoherence except
that when the cross terms become sufficiently small they become exactly zero. This would
be a "small" non-unitary step. But it requires that there be distinguished variables in
which the density matrix becomes diagonal - the "pointer basis".
You received this message because you are subscribed to the Google Groups
"Everything List" group.
To post to this group, send email to firstname.lastname@example.org.
To unsubscribe from this group, send email to
For more options, visit this group at