The probabilities you talk about cannot be “obtained" from Kolmogorov axioms alone. The inequality which you write down follows from arithmetic. Your starting point was 1/2 = 0.5 is smaller than 1/sqrt 2 = 0.7071… Arithmetic.And that is exactly the fact that Bell used,On 6 Jan 2025, at 00:52, Alexandre de Castro <alx...@gmail.com> wrote:In summary: Bell calculates the quantum probabilities (4) using Born rule and shows that they are not compatible with the local model of probability distribution (9) derived from the Kolmogorov axioms. However, it is possible to show that the same probabilities can be obtained directly from Kolmogorov's axiomsEm dom., 5 de jan. de 2025 às 20:31, Alexandre de Castro <alx...@gmail.com> escreveu:Hi Richard.
We have discussed Bell's calculation and have, previously, reproduced his formulation.
Bell showed that the probabilities obtained by applying the Born rule are not compatible with local models of probability distributions, according to his conception of locality expressed in Eq. 9 (Bertlmann's socks). But we can show that it is possible to obtain from the Kolmogorov axioms those same probabilities obtained by Bell for any event that has probability ½ of occurring.Em dom., 5 de jan. de 2025 às 13:46, Richard Gill <gill...@gmail.com> escreveu:Alexandre, the contradiction derived in Bertlmann’s socks is a contradiction between certain physics assumptions and some simple algebra.RichardSent from my iPhoneOn 5 Jan 2025, at 16:16, Alexandre de Castro <alx...@gmail.com> wrote:Dear colleagues,Here, an alternative approach involving the Born rule. Feel free to analyze.
Consider that
, then the condition
holds.
Take any event
that has a probability
of occurring.
Hence,
We then can write the inequality as:
Or even as:
This inequality can be rewritten in the trigonometric form:
And considering the identity:
We have:
As a result:
Thus, the probabilities obtained in Bertlmann's socks and the nature of reality, Pg 10) can be directly obtained from the probability axioms, without any contradiction.
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"Bell's mathematics is elementary and his logic is impeccable."
I agree. What is most interesting is that we can use Bell's formulation to show that a statement and its negation can both be true.
I have always said that Bell’s math is elementary and his logic is impeccable. He makes some physical assumptions and derives a logical consequence of them. In some very careful experiments we see that the consequence which he derived is not true. Hence the physics assumptions under which he derived it are not valid in those situationsSent from my iPhoneOn 7 Jan 2025, at 10:38, Alexandre de Castro <alx...@gmail.com> wrote:"Alexandre, you didn't use any physics assumptions. You started with 0.5 < 0.7071… = sqrt(2), did some simple arithmetic, and at some point used the well known values of sin^2(22.5 degrees) and sin^2(45 degrees)., thereby recovering a true inequality also used by Bell. What you write down is a trivially true fact. Bell did something interesting with it."but Bell's formulation is also quite simple.It can even be considered trivial.
Just see below:
Em seg., 6 de jan. de 2025 às 19:46, Alexandre de Castro <alx...@gmail.com> escreveu:
Mark,
considering the following calculation, can you show where Richard makes perfect sense?
In "Bertlmann's socks", consider Ineq.(9):
The probability of being able to pass atC and not able at
C
The probability of being able to pass
C and not able at
C
The probability of being able to pass at
C and not able at
C
This inequality can be written as:, where
C,
C,
C and
corresponds to "able to pass" and "not able", respectively.
Let's represent the events as orthonormal vectors in an inner product space:
I have always said that Bell’s math is elementary and his logic is impeccable. He makes some physical assumptions and derives a logical consequence of them. In some very careful experiments we see that the consequence which he derived is not true. Hence the physics assumptions under which he derived it are not valid in those situations
The physical assumption Bell made need to be challenged.
The following refers to entangled photons in the singlet state, but are also applicable to spin 1/2 particles.
Alexandre, you did not use any physics assumptions. You started with 0.5 < 0.7071… = sqrt(2), did some simple arithmetic, and at some point used the well known values of sin^2(22.5 degrees) and sin^2(45 degrees)., thereby recovering a true inequality also used by Bell. What you write down is a trivially true fact. Bell did something interesting with it.
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Dear Colleagues
I must once again draw your attention to my article [1], which proves that Bell's inequality does not make sense. Bell made two mistakes that provoked mass delusion. 1) Bell did not understand that the no-go theorem proposed by von Neumann in 1932 has proved that quantum mechanics cannot describe some quantum phenomena, for example the Stern – Gerlach effect, without the absurd claim that the mind of the observer can create a quantum state at observation; 2) Bell did not understand that the orthodox quantum mechanics cannot predict the EPR correlation since the observer can create a quantum state only the particle which he observes according to the Dirac jump or wave function collapse. The EPR correlation was invented in 1951 by Bohm, with the help of a more absurd claim that an observer can create a quantum state not only of the particle he is observing, but also of another particle that he cannot observe.
Quantum mechanics is one of the mass delusions of 20th century physicists. Another mass delusion is the theory of superconductivity. The mass delusions have become possible because science has become mass. The mass man rather believes in successful theories than understands them. The opinion of the masses now prevails in science, which is expressed in particular through the Hirsch index https://en.wikipedia.org/wiki/H-index . The mass man, as a rule, pays attention to publications by authors who have a fairly large Hirsch index and articles with many links. This psychology of the mass man was particularly evident in relation to Bell's publications, which almost no one noticed in the early years.
It should be noted that Hirsch himself, Professor of physics at University of California, San Diego https://jorge.physics.ucsd.edu/jh.html , is quite negative about his index, as he wrote in the article [2]. Hirsch aptly compares in this article [2] the attitude of most theorists to the famous BCS theory of superconductivity (https://en.wikipedia.org/wiki/BCS_theory , Nobel prize in Physics 1972) with the attitude of the characters of the fairy tale "The Emperor's New Clothes" by Hans Christian Andersen to the emperor's new clothes. The validity of this comparison is proved by the fact that for many years no one noticed that the BCS theory contradicts the second law of thermodynamics.
Hirsch argues in the recent article [3] that one of the following two alternatives has to be valid: (1) The Meissner effect violates the second law of thermodynamics, and is consistent with the BCS theory of superconductivity, as argued by Nikulov. (2) The Meissner effect is consistent with the second law of thermodynamics, establishes the invalidity of the BCS theory of superconductivity. Hirsch tries to prove that the second alternative should be valid. But in order to show that the Meissner effect is consistent with the second law of thermodynamics Hirsch uses in [3] a false analogy of the Gorter cycle with the Carnot cycle and makes contradictory statements. I draw attention to Hirsch's mistakes and contradictions in the manuscript “The Meissner Effect Violates the Second Law of Thermodynamics” submitted to the journal Physica C. This manuscript is available at SSRN https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5077185 .
[1] Alexey Nikulov, Physical Thinking and the GHZ Theorem. Found. Phys. 53, 51 (2023). DOI: <https://doi.org/10.1007/s10701-023-00693-y>, https://link.springer.com/article/10.1007/s10701-023-00693-y
[2] J. E. Hirsch, Superconductivity, what the H? The emperor has no clothes. APS Forum on Physics and Society Newsletter, January 2020, p. 4-9; arXiv: https://arxiv.org/abs/2001.09496
[3] J.E. Hirsch, Does the Meissner effect violate the second law of thermodynamics? Physica C, Volume 629, 15 February 2025, 1354618, doi: https://doi.org/10.1016/j.physc.2024.1354618 ; https://www.sciencedirect.com/science/article/pii/S0921453424001825?via%3Dihub .
With best wishes,
Alexey
ср, 8 янв. 2025 г. в 20:11, GeraldoAlexandreBarbosa <geraldo...@gmail.com>:
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Dear Mark,
Your point of view is the typical point of view of mass man that prevailed before Bell's inequalities became popular. Bell's publications were ignored for many years precisely because of this point of view of the mass man, who ignored the contradiction of quantum mechanics with realism, because most scientists could not understand the sense of this contradiction. Because of this disregard for the obvious contradiction by the former mass man, the modern mass man has the illusion that quantum mechanics contradicts realism due to the EPR correlation and violation of Bell inequalities. Thus, your point of view has provoked senseless modern controversies about Bell's inequalities and even the 2022 Nobel Prize in Physics. The modern mass man ignored the fact that Einstein protested against the rejection of realism by the creators of quantum mechanics and said about ’spooky action at a distant’ long before Bell's inequalities appeared.
In fact, you urge to do not think and only to calculate. Most theorists treated quantum mechanics that way without your instruction. But there was always a minority of those who continued to think and understand. Einstein understood as early as 1927 that because of Born's proposal, quantum mechanics should predict the possibility to see one particle in several places at once, i.e. obvious absurd, without a wave function collapse at the first observation. You still don't understand the obvious logic that Einstein understood.
Einstein, who understood the necessity of the postulate about the wave function collapse five years before von Neumann or about the Dirac jump three years before Dirac, also understood that this postulate contradicts locality and realism. He said in 1927, in his speech in the debate at the 5th Solvay Congress [3] this postulate about an instantaneous and non-local change in the quantum state "leads to a contradiction with the postulate of relativity". The contradiction of quantum mechanics with the theory of relativity is a consequence of the fact that the postulate about the wave function collapse cannot logically be understood otherwise than as the postulate about the instantaneous and non-local change in the quantum state under influence of the change in the observer's knowledge, after the first observation, about the probability of the result of the second observation.
J. von Neumann understood that the wave function collapse occurs under an influence of the mind of the observer. Heisenberg justified the postulate of the jump at observation by a discontinuous change in our knowledge: "Since through the observation our knowledge of the system has changed discontinuously, its mathematical representation also has undergone the discontinuous change and we speak of a ’quantum jump’" [4]. But the former mass man did not want to understand this absurdity of quantum mechanics. Therefore the modern mass man has the illusion that quantum mechanics contradicts realism due to the EPR correlation and violation of Bell inequalities. The modern mass man does not want to understand that the orthodox quantum mechanics cannot predict the EPR correlation and violation of Bell inequalities, although this fact is proven in my article [5].
[1] J. von Neumann, Mathematical Foundations of Quantum Mechanics. Princeton, NJ Princeton University Press. 1955; Mathematishe Grundlagen der Quantem-mechanik. Springer, Berlin, 1932.
[2] A.M. Dirac, The Principles of Quantum Mechanics. Oxford University Press. 1930.
[3] A. Einstein, Electrons et photons. Rapports et discussions du cinquieme Gonseil de physique- Bruxelles du 24 au 29 octobre 1927 sous les auspices de 1' Institut International de physique Solvay, p. 253—256. Paris, Gautier-Villars et Gie, editeurs 1928.
[4] W. Heisenberg, Physics and Philosophy. George Allen and Unwin Edition, 1959.
[5] Alexey Nikulov, Physical Thinking and the GHZ Theorem. Found. Phys. 53, 51 (2023). DOI: <https://doi.org/10.1007/s10701-023-00693-y>, https://link.springer.com/article/10.1007/s10701-023-00693-y
With best wishes,
Alexey
😁
Bryan Sanctuary reacted via Gmail
Mark, I am completely with you! In my opinion: nature is built on and with quantum dice. Life, including human life, is biology; biology is chemistry and physics; chemistry is quantum dice. It builds molecules. Quantum randomness and gravity built the structure of the universe.