Einstein won Nobel for his work on photoelectric effect, that’s QM, isn’t it? Maybe not, who knows?
Both theories must be correct in the main otherwise nothing in the modern world would work. But there's a good dose of bs out there as well. I worked with a guy for a ew years who was a PhD solid state physccist and he told me when he was researching while he was working on his thesis a lot of the stuff was absoloute garbage. Now, maybe his stuff was also garbage, but it does make you wonder
I know that Steve, but at least his theory did not propose something 122 orders of magnitude out! 🙂
In was curious about the cosmological aspects. While this paper is concerned with other factors there is a sort of potted history of the cosmological aspects, 😉 readable even if the maths prove too much
https://spiral.imperial.ac.uk/bitstream/10044/1/9486/1/March-MC-2012-PhD-Thesis.pdf
What every graph show gravitational constant at center of mas peaked. Clearly its 0 . Am i missing something
Indeed, it's obvious that quantum theory simply can't calculate the vacuum energy correctly!
It gives a figure so high that it would prevent galaxies even forming in our Universe.
Indeed, the fact that you are reading this indicates that its estimate cannot be right!
For a long time, physicists thought that the net energy density of the Universe was zero (with an uncertainty greater than zero!) since all the various terms would cancel out.
However, the discovery of the accelerating expansion of the Universe invoked 'dark energy', the simplest explanation for which is that it is vacuum energy. Measurements from cosmology indicate an energy density 29 orders of magnitude less than the mass-energy density of water, but even if 122 orders of magnitude less than naive estimates would suggest, it is coming to dominate the evolution of our Universe.
P.S. The above information was expertly extracted and edited by me from this source: https://phys.libretexts.org/Bookshelves/Quantum_Mechanics/Advanced_Quantum_Mechanics_(Kok)/11:_Noncommuting_Operators_and_Uncertainty/11.4:_The_Heisenberg_Uncertainty_Principle/11.4.2:_Vacuum_Energy#:~:text=Unfortunately, even quantum field theory can’t calculate that,this indicates that this estimate cannot be right.
As Steve would say, "Hope it helps".😉
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I don’t think the accelerating expansion invokes dark energy, it‘s a mass issue, they assumed that there was enough mass in the center of the universe to cause the expansion to stop and reverse itself but it turns out there simply wasn‘t enough mass in the center of the universe to do that. It’s an inertia issue.
There are actually three possible solutions to Einstein's equations of general relativity:
1. Expansion slows down, stops and then contracts.
2. Expansion is so rapid that gravity can never stop it, though it does slow down a bit.
3. Expansion is just fast enough to avoid collape and gets smaller, but never reaches zero.
The big problem is that recent observations suggest that the expansion of the universe is actually accelerating, something which is NOT predicted by the three solutions to Einstein's equations.
Physicists do not know what is causing this accelerating expansion and are hypothesising as to what force could be responsible for pushing the universe apart ever faster. Hypotheses such as dark energy have been made, but the truth is we really don't know.
There’s not enough mass in the middle to keep it from accelerating. Did I just say that? Oh, my!
The first volume of the two Bjorken and Drell books, "Relatavistic Quantum Mechanics" is here:
https://emineter.files.wordpress.co...drell-relativistic-quantum-mechanics-1964.pdf
The second one "Relativistic Quantum Field Theory" is also available, and way beyond my level of understanding.
But I have too many other, lighter books on the go right now to take it in. Lighter stuff on Dark Matter and Gravity. But gives a taste of this difficult subject at a serious college level..
I never did much Quantum Mechanics at college. We just did the square well, and the harmonic oscillator and tunneling.
We wouldn't have transistors or LEDs or lasers without Quantum Mechanics, nor any explanation of the Hydrogen spectrum. So have no doubt it is right.
https://emineter.files.wordpress.co...drell-relativistic-quantum-mechanics-1964.pdf
The second one "Relativistic Quantum Field Theory" is also available, and way beyond my level of understanding.
But I have too many other, lighter books on the go right now to take it in. Lighter stuff on Dark Matter and Gravity. But gives a taste of this difficult subject at a serious college level..
I never did much Quantum Mechanics at college. We just did the square well, and the harmonic oscillator and tunneling.
We wouldn't have transistors or LEDs or lasers without Quantum Mechanics, nor any explanation of the Hydrogen spectrum. So have no doubt it is right.
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Here’s a very interesting YT video about Feynman
One of the things RF pointed out was that QM could not resolve the crises of the electrons ‘infinite energy’ and said QED could not resolve it either. The YT presenter talks about Feynman’s honesty in these matters and his point that physicists had (this is back in the ‘70’s and ‘80’s already) to stop piling
One of the things RF pointed out was that QM could not resolve the crises of the electrons ‘infinite energy’ and said QED could not resolve it either. The YT presenter talks about Feynman’s honesty in these matters and his point that physicists had (this is back in the ‘70’s and ‘80’s already) to stop piling
You haven't explained why an electron is calculated to have 'infinite energy' Bonsai. Interested parties demand to know! 😉
However, electrons exist and don't carry infinite energy.
So physicists just have to grin and bear it!
I read they simply subtract this constant amount of infinite energy when considering the overall zero of energy.
However, electrons exist and don't carry infinite energy.
So physicists just have to grin and bear it!
I read they simply subtract this constant amount of infinite energy when considering the overall zero of energy.
The heart of Quantum Mechanics, for which the Nobel in physics was awarded last year, including the confounding problem of Bell’s theorem, including hidden variables, may be entanglement and superposition. Of course, in high end audio we have many examples of “applied quantum mechanics,“ including but not limited to the CD laser (as was just pointed out) but many others, too. The Intelligent Chip, the Super Intelligent Chip (yours truly), WA Quantum Chips, Red x Coordinate Pen (PWB Electronics (Leeds, UK), Quantum Temple Bell (no relation to Bell’s theorem ha ha), Jack Bybee purifiers, etc., etc.
Snip snip,
“Superposition is the ability of a quantum system to be in multiple states at the same time until it is measured. Because the concept is difficult to understand, this essential principle of quantum mechanics is often illustrated by an experiment carried out in 1801 by the English physicist, Thomas Young.”
Of course the single and double slit experiments of yore are fraught with difficulties in interpreting what they really mean.
https://www.nobelprize.org/prizes/physics/2022/press-release/
Snip snip,
“Superposition is the ability of a quantum system to be in multiple states at the same time until it is measured. Because the concept is difficult to understand, this essential principle of quantum mechanics is often illustrated by an experiment carried out in 1801 by the English physicist, Thomas Young.”
Of course the single and double slit experiments of yore are fraught with difficulties in interpreting what they really mean.
https://www.nobelprize.org/prizes/physics/2022/press-release/
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Don't be fooled by Quantum Snake Oil.
The word 'quantum' is appearing everywhere.
To the gullible it sounds so seductively scientific!
The word 'quantum' is appearing everywhere.
To the gullible it sounds so seductively scientific!
I'm thinking Bybees: https://www.diyaudio.com/community/...rch-preamplifier-part-iii.318975/post-5864978 😀
On more serious matters, there must be a deep underlying mechanism that allows electrons to dance around an atoms nucleus for what is practically infinity (trillions of years IIUC).
Interestingly, in the video I posted, the presenter goes on to criticize RF quite harshly for doing the very things he himself attacked other TPs for doing, one of them being 'renormalization' which was a mathematical technique RF used to make QED work. RF himself called it 'mathematical hocus pocus'.
On more serious matters, there must be a deep underlying mechanism that allows electrons to dance around an atoms nucleus for what is practically infinity (trillions of years IIUC).
Interestingly, in the video I posted, the presenter goes on to criticize RF quite harshly for doing the very things he himself attacked other TPs for doing, one of them being 'renormalization' which was a mathematical technique RF used to make QED work. RF himself called it 'mathematical hocus pocus'.
That pdf I linked to has a chapter on QM, 4 chapters maybe 5 on several snake like aspects. The maths is of secondary importance. The routes to variations on reasoning rather interesting.
Unfortunately, the pdf to which you refer appears to be 206 pages long.
Any chance of a brief summary of the "cosmological aspects" that particularly interested you?
P.S. I wasn't referring to quantum mechanics when I wrote what you quoted above!
Any chance of a brief summary of the "cosmological aspects" that particularly interested you?
P.S. I wasn't referring to quantum mechanics when I wrote what you quoted above!
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Gulu, that’s exactly what the scientific establishment said about the single and double slit experiments by Young more than 200 years ago. Is that being overly skeptical? You decide.