On 1/5/2025 7:29 PM, Jesse Mazer wrote:
On Sun, Jan 5, 2025 at 6:56 PM Brent Meeker <[email protected]> wrote:
On 1/4/2025 11:45 PM, Alan Grayson wrote:
On Saturday, January 4, 2025 at 8:06:38 PM UTC-7 Alan Grayson wrote:
On Saturday, January 4, 2025 at 2:11:02 PM UTC-7 Alan Grayson
wrote:
On Saturday, January 4, 2025 at 1:46:26 PM UTC-7 John
Clark wrote:
On Sat, Jan 4, 2025 at 10:00 AM Alan Grayson
<[email protected]> wrote:
/> Moderation is inappropriate where Trump
physics is endorsed. AG /
*About a month ago Sean Carroll uploaded a very good
video explaining the Many Worlds theory, but it's
over an hour long so I know there's about as much
chance of a dilettante such as yourself of actually
watching it is there is of you reading a post of mine
if it's longer than about 100 words. *
*
*
*The Many Worlds of Quantum Mechanics | Dr. Sean
Carroll
<https://www.youtube.com/watch?v=FTmxIUz21bo&t=8s> *
*
*
*John K Clark See what's on my new list at
Extropolis <https://groups.google.com/g/extropolis>*
*Sure, I'll watch it. But I am still waiting for your
reply to my question, posed around 10 times, why, based
on S's equation, every thing that can happen, MUST
HAPPEN. And please don't offer your BS that you've
answered it repeatedly. Such a claim would be blatent
lie. Finally, I know what you haven't offered the answer.
It's really simple. You don't want to admit the Emperor
has no clothes, as such an admission might trigger a
coronary when you realize you've been preaching a lie
these many years. AG *
*I watched it. I can't say I fully understand it or believe
it. I'll probably watch it again. I do know that lately I am
less impressed with the cat experiment, as I recall a recent
comment by Brent; that there's no operator which has Alive
and Dead as its eigenvalues. This, IMO, means that the cat's
wf isn't a valid quantum wf. AG
*
You're misinterpreting what I wrote. I meant that being alive is
a superposition of a bazillion of different wave functions so it
is impossible to formulate a measurement operator which will
return just one of two values that actually correspond to Alive
and Dead. In other words the exist a range of states that count
as alive, some of which are dying, and a range of states that
would count at dead, but some of which are recovering. It doesn't
mean there is no WF of the cat. I means that alive and dead are
only well defined in the extreme cases because the cat has many
intermediate states which we can't account for in our measurement
operator.
In terms of our fuzzy ordinary language this may be true, but in
classical mechanics we have the notion of a "macrostate" which is
defined as some large set of microstates, can we do something similar
in QM and just imagine classifying every possible position eigenstate
But what's your assurance that position eigenstates are the ones that
provide a binary alive/dead dichotomy? And position of what?
Particles...that doesn't work because the particle positions don't
define an eigenstate of the whole. It's a feature of QM that
measurements are holistic. You have to know what "alive" means in order
to measure it.
Brent
as either falling into the macrostate "live cat" or not being a member
of that macrostate? (ignoring the practical difficulties of actually
going through all the eigenstates and classifying them this way) If we
had such a precise definition, could we then define an operator
corresponding to the macrostate we had defined? The discussion at
https://physics.stackexchange.com/questions/343380/how-is-a-macrostate-specified-in-quantum-statistics
seems to indicate that macrostates in QM can be defined as density
operators.
Jesse
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