From: scerir (scerir@libero.it)
Date: Tue Feb 11 2003 - 10:42:39 MST
From: "Max M"
> But the logic seems to be that because something can exist in different
> quantum states (at the quantum level) at the same time, that this is
> also logical at the macroscopic level!
Before MWI there was the RSI (relative state interpretation)
which says that in a *composite* quantum system, there is *not*
something like a single (or unique) state for one sub-system.
Because sub-systems do not possess states that are
independent of the states of the remainder of the
system.
Sub-systems (within a composite system) are *correlated*
with one another. One can arbitrarily choose a state,
for one sub-system, and be led to the *relative* state
for the remainder.
Thus we are faced with a fundamental relativity of states,
and it is meaningless to ask the single, unique state of a
sub-system.
Now imagine a composite system represented by a quantum
sub-system and a macroscopic detector, coupled to the quantum
sub-system ...
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