On 7/4/2025 5:20 AM, John Clark wrote:
*If someone is a big fan of the law of conservation of mass/energythen
he should also be a big fan of Many Worlds. This is because theories
that assume measurement induced wave function collapse is real, such
as Copenhagen, the expected energy range can change quite
significantly. But Many Worlds doesn't have that problem because there
is no wave collabs, all outcomes that are allowed by Schrodinger's
equation continue and energy remains conserved, globally and exactly.
This is because the universal quantum wave function is unitary, it
evolves smoothly and no new information is created or destroyed, the
total quantum amplitude remains constant but gets divided up among the
different outcome branches. In the same way slicing a loaf of bread
into thinner and thinner slices does not create more bread. *
Except that would imply the total energy of out slice of "world" has
less and less energy. Yet energy appears to be conserved at the
classical level. Curiously Sean Carroll wrote a paper claiming energy
is not conserved in QM and he proposed a possible test.
Brent
*And as I've mentioned before, unlike the second law the first law of
thermodynamics is not some sacred testament that no physicist dare
question. Classical physics and Special relativity have a clear
definition of energy and a conservation law, *
Energy is the variable conserved due to the invariance of physical laws
under time-translation; an application of Noether's theorem in classical
and SR physics.
Brent
*but General relativity doesn't even have a global definition of
"energy", much less a conservation law about it.*
*
*
*John K Clark See what's on my new list at Extropolis
<https://groups.google.com/g/extropolis>*
*3d7*
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