On 1/11/2019 3:08 AM, Bruno Marchal wrote:
The “whole problem of QM” is there. The coefficients of the terms in
the superposition are the “amplitude of probability”, and they can be
negative. The probability is given by the square of the amplitude of
probability. As long as we don’t make any observation, the wave acts
like a wave, and the amplitudes can be added or subtracted. To get the
probability for the measurement result on phi, we take the square of
the amplitude (in the base corresponding to what we want to measure).
With Everett (non collapse), measurement is only self-entanglement.
Not "only". The measurement device (person?) must have a reduced
density matrix that is diagonalized by tracing over the other variables
(environment?).
Brent
--
You received this message because you are subscribed to the Google Groups
"Everything List" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to everything-list+unsubscr...@googlegroups.com.
To post to this group, send email to everything-list@googlegroups.com.
Visit this group at https://groups.google.com/group/everything-list.
For more options, visit https://groups.google.com/d/optout.
