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Topic: Bells theorem


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In the News (Tue 18 Jun 19)

  
  Bell - Wikipedia, the free encyclopedia
Church bell, a bell hanging in a church tower
Bell character, a character that produces an audible signal at a terminal
Bell curve grading, a use of the bell curve in comparing student achievement and converting percent and percentile grades to letter grades
en.wikipedia.org /wiki/Bell   (561 words)

  
 Bell's theorem - Wikipedia, the free encyclopedia
Bell's theorem is the most famous legacy of the late Irish phyisicist John Bell.
Bell test experiments to date overwhelmingly show that the inequalities of Bell's theorem are violated.
John Bell's papers examined both John von Neumann's 1932 proof of the incompatibility of hidden variables with QM and Albert Einstein and his colleagues' seminal 1935 paper on the subject.
en.wikipedia.org /wiki/Bell's_inequalities   (3892 words)

  
 The Photon a particle or wave?   (Site not responding. Last check: 2007-10-15)
John Bell derived a mathematical theorem which verified the statistical predictions of quantum mechanics could be applied to quantum particles that were "spacelike separated" or existed in different local realities.
This implies the presently accepted concepts of quantum mechanics are incomplete and that there may be a "hidden variable" or mechanisms to account for the fact that quantum particles appear to "communicate" at speeds greater than that of light.
However, both the EPR paradox and Bells theorem deals with rate at which the information regarding the momentum of quantum particles can be communicated to different local realities.
home.comcast.net /~jeffocal/shadows_publisher/page21.html   (606 words)

  
 The EPR Paradox and Bell's Inequality Principle
In 1964 John Bell proposed a mechanism to test for the existence of these hidden variables, and he developed his inequality principle as the basis for such a test.
This is Bell's Inequality Principle, and it is proved to be true if there are real (perhaps hidden) variables to account for the measurements.
Some physicists argue that there are assumptions in derivations of Bell's Inequality and that it may be possible to construct a local theory that does not respect those assumptions.
math.ucr.edu /home/baez/physics/Quantum/bells_inequality.html   (2076 words)

  
 Missing Phenomenon
If Bells theorem holds true, this implies reading electrons as binary bits, and the fact that they can be switched, and altered in real time(instantaneously), without regard to distance, would make interstellar, or coast to coast communication much faster then even before, and that is understated..
Duster, Bell's theorem does not concern itself with which kind of particle, or whether there is mass or not, but rather just with local realistic systems with properties that can be varied over a small finite set (idealized as two-state).
The theorem must state that alll matter is bound and that balence is only achieved when it becomes fixed, and observable.
www.physicsforums.com /showthread.php?p=1098501#post1098501   (837 words)

  
 Bell's Theorem   (Site not responding. Last check: 2007-10-15)
The same theorem can be applied to measurements of the polarisation of light, which is equivalent to measuring the spin of photon pairs.
The fact that our final form of Bell's inequality is experimentally violated indicates that at least one of the three assumptions we have made have been shown to be wrong.
What is actually found [in the experimental tests of Bell's theorem] is that the behavior of the two [electrons] is correlated in a way that is rather similar to that of the two television images of the fish, as described earlier.
www.upscale.utoronto.ca /GeneralInterest/Harrison/BellsTheorem/BellsTheorem.html   (6569 words)

  
 The Meeting of Science and Mysticism
Bell’s math thus suggests that space and time only exist on some levels of the universe-or only in our minds-or that we must assume a level of reality where space and time don’t exist at all.
This sounds some wild, science-fiction elaboration of Bell, but it has been seriously proposed by Dr. Evan Harris Walker, an American physicist who deduced, from Bell’s math and the math of Heisenberg’s Uncertainty Principle* just how the human brain should be able to affect the dice.
In summary, Bell’s theorem does not prove the truth of the basic ideas of mysticism, but it definitely makes them seem more plausible than any previous scientific discovery did.
www.rawilsonfans.com /articles/Fate.htm   (2663 words)

  
 Bell's Theorem the EPR Paradox and four spatial dimensions   (Site not responding. Last check: 2007-10-15)
This matterenergy wave is generated by a coupling, form one "quantum mass unit of space" to the next, of "vibrations" in a continuous non-quantized matter and energy field component of space.
In response to Einstein argument about incompleteness of Quantum Mechanics, John Bell argued that the quantum mechanical approach to describing nature is valid and the apparent incompleteness arises from an incomplete understanding of the important quantities and constraints inherent in nature.
This defines a physical mechanism explaining why Bell's theorem can provide mathematical verification that the statistical predictions of quantum mechanics can be applied to quantum particles or "quantum mass units of space" that are "spacelike separated" or exist in different local realities.
home.comcast.net /~jeffocal/chapter5.htm   (1508 words)

  
 DrChinese Presents Bell's Theorem
Published in 1965, Bell's Theorem is famous for drawing an important line in the sand between Quantum Mechanics (QM) and the world as we know it intuitively.
Bell's Theorem shows that the dream of a "more complete" theory is just that: a dream.
Bell was aware that there were some unusual cases in which pairs of particles could be created that had an unusual property - they remained connected in some way even after they were separated.
www.drchinese.com /Bells_Theorem.htm   (2683 words)

  
 Re: Layman's Explaination of Non-Locatlity and Bells Theorem.   (Site not responding. Last check: 2007-10-15)
Re: Layman's Explaination of Non-Locatlity and Bells Theorem.
Bell's theorem (Which actually has a >surprisingly easy proof for such a clever theorem) tells us "No local >deterministic hidden-variable theory is capable of reproducing the results >of quantum mechanics".
Re: Layman's Explanation of Non-Locality and Bell's Theorem
www.lns.cornell.edu /spr/2000-01/msg0021406.html   (237 words)

  
 Application: Bell ringing
The art and study of such bell ringing is referred to as campanology.
It is easy to see that the pattern which defines the plain lead on four bells is nothing more than a cross change followed by a plain change on the middle two bells until we reach the round, which is where we started.
Generating the permutations contained in the plain lead on four bells can be easily described using the notation for permutations we have developed.
web.usna.navy.mil /~wdj/book/node158.html   (763 words)

  
 NATO ADVANCED RESEARCH WORKSHOP: Modality, Probability, and Bell's Theorems - Papers of the key speakers
The second paper shows that relativity and Bell correlations are thus necessary to give a conclusive demonstration of the impossibility of simulating quantum theory by a classical theory.
PDF 114 KB The paper gives an example of a non-standard but consistent variant of quantum theory in which measurements on Bell states allow superluminal communication, but grandfather paradoxes are nonetheless avoided.
The Einstein-Podolsky-Rosen State Maximally Violates Bell's Inequalities Hans Halvorson PDF 191 KB The paper gives a proof of the existence and uniqueness of the EPR state as a normalized, positive linear functional of the Weyl algebra for two degrees of freedom.
confer.uj.edu.pl /bell.workshop/papers.html   (1127 words)

  
 Bell's Theorem: Physics
The way we will prove the theorem is to assume locality to be true, which will eventually lead us to make a testable prediction.
This effect, strange as it may seem, is exactly the kind of thing we found we needed to explain the failure of Bell's inequality.
In order to explain the failure of Bell's inequality we had to conclude that one of the measurements (presumably whichever one happened first) affected the state of the other electron.
www.ncsu.edu /felder-public/kenny/papers/bell.html   (7601 words)

  
 Bell's Theorem and Negative Probabilities
The reason I prepared a new thread was to highlight the existence of negative propbabilities which result from Bell in the Realistic view.
Really, what Bell's theorem proves is that the Quantum behavior of particles is not 'nice'.
The theorem does not apply, for example, if one allows for unmeasurable probability functions (google for Banach Tarski paradox for more information on how ugly this is).
www.physicsforums.com /showthread.php?p=429597   (4636 words)

  
 Bell's Theorem is Invalid for Cellular Automata, or Demonstrating EPR effects on a One-Dimensional (Non-Quantum) CA
Bell's Theorem is Invalid for Cellular Automata, or Demonstrating EPR effects on a One-Dimensional (Non-Quantum) CA Bell's Theorem is Invalid for Cellular Automata, or Demonstrating EPR effects on a One-Dimensional (Non-Quantum) CA*
Applying Bell's theorem, it is easy to deduce that if the settings of the switches are random then the same colors will flash at least 5/9 of all the runs, i.e.
The domain of the theorem is irrelevant to cellular automata, therefore there is no way one can make the "conclusion" that EPR effects are unobtainable in a CA "because of Bell's theorem" (an opinion that has been commonly accepted in some physicists circles for a long time).
digitalphysics.org /Publications/Petrov/Pet02m/Pet02m.htm   (4926 words)

  
 CHAPTER 7: ENERGY
This incredible phenomenon is known in physics as Bells Theorem, although it is no longer a theory, having now been proven in laboratories hundreds of times.
Bells Theorem is important to us because it demonstrates on a microcosmic level the reality of the Zero dimension of Awareness and Synchronicity.
Bells Theorem also demonstrates that some phenomenon -- those connected with the Zero dimension - are not submitted to the laws of causality.
www.chanceandchoice.com /ChanceandChoice/chapter7.html   (8009 words)

  
 Introduction to Bells Theorem   (Site not responding. Last check: 2007-10-15)
Then in 1964, physicist John Bell proposed a brilliant method to resolve the issue.
"Bell's Theorem," says the eminent physicist Henry Stapps, "is the most profound discovery of science."
By the early 1980's a number of elegant experiments applying Bell's Theorem have proved that quantum theory, which speaks in terms of probabilities rather than actualities, is indeed a complete explanation of reality...
personal.nbnet.nb.ca /surettev/text/super300.htm   (288 words)

  
 Arkadiusz Jadczyk: Posts to sci.physics.research
of what Bells' theorem theorem is about is not the same, and not even close, to what Bell himself could have in mind.
to which Bell's theorem can be of no consequence because it is based on assumptions which will not apply in certain alternative formulations of quantum theory.
I consider EEQT - the framework and interpretation I was active in developing, is a realistic one, nevertheless I see no way in which Bell's theorem applies to it.
quantumfuture.net /quantum_future/research5.htm   (1621 words)

  
 into to QM
John Bell found that there should be certain differences between a theory, which is local and supposes that everything's predetermined and in and a theory, which is non-local and where things doesn't take on a special attribute until measured.
And they all exist, remember bells theorem, particles doesn't have determined attributes but they become determined only after measurement so since the particles are in super positions both states exist in the particles, and all the four states exist in the two particle combined.
However Alice original particle still gets destroyed, this is because in the Bell state measurement, Alice EPR particle and her original particle also gets entangled, which means that the original particle looses it's own state and instead it's state now depends on Alice EPR particles and vice versa.
www.geocities.com /mik_malm/quantmech.html   (8515 words)

  
 Bell's Theorem Seminar Notes   (Site not responding. Last check: 2007-10-15)
Bell, J. On the Einstein Podolsky Rosen Paradox, Physics, 1 (3), 195.
Bell, J. On the Problem of Hidden Variables in Quantum Mechanics, Reviews of Modern Physics, 38 (3), 447.
Bell, J. S., 1993, Speakable and unspeakable in quantum mechanics (collected papers on quantum philosophy), Cambridge University Press.
ccreweb.org /documents/bells_theorem/bt.html   (265 words)

  
 Re: Layman's Explaination of Non-Locatlity and Bells Theorem.
It has the proof of Bell's Theorem for the interested too.
Prev by thread: Re: Layman's Explanation of Non-Locality and Bell's Theorem
Next by thread: Re: Layman's Explaination of Non-Locatlity and Bells Theorem.
www.lns.cornell.edu /spr/2000-01/msg0021382.html   (472 words)

  
 Halfbakery: Ansible
in 1964 js bell theorized that the einstein-rosen-podolowsky effect did indeed exist.
Bell's Theorem says (in essence) that if there are no non-local connections, then the correlations between measurements made on entangled particles can't be above a certain strength.
What Alain Aspect and his group did in the early 1980s was show that you could get correlations stronger than Bell's inequality allowed.
www.halfbakery.com /idea/Ansible   (1091 words)

  
 Study Guide for PHA Exam 4
In 1964, John Stewart Bell published a theorem (Bell's Interconnected Principle) based on Bohm's ideas on a clear way to test a wide variety of HV theories.
Bell made only two basic assumptions (both of which EPR would have insisted upon): 1.
Most prefer to give up locality (Bell: the solution Einstein would have liked least) because of collapse of wave packet.
www.uark.edu /depts/physics/classes/pha/studyguide4.html   (3374 words)

  
 Citations: The Transactional Interpretation of Quantum Mechanics
Garrett-A-J-M., "Bells' theorem, inference, and quantum transactions", Foundations of Physics.
Garrett-A-J-M., "Bell's theorem and Bayes' theorem", Foundations of Physics.
Sutherland-R-I., "Implications of a causality paradox related to Bell's theorem", Nuovo Cimento B. vol.104B, ser.2, no.1.
mist.npl.washington.edu /ti/TI_cit.html   (670 words)

  
 The wealth of Physical knowing - Aristotles' first sphere
John Bell made a huge mess of theoretical physics with his simple theorem "Reality is non-local." The implications are enormous, and the experiment is relatively easy.
Richard Feynman, besides inventing one of them, showed that they each is just a variation on any other.
That's why Bell's Theorem was so hard to swallow.
www.msu.edu /user/mcwillia/tomast.htm   (2578 words)

  
 1
He preferred the idea that some unknown or "hidden variables" were contributing to the effect, and since they weren’t known, then quantum theory must be incomplete.
In 1964, John Bell proved that there could not possibly be any hidden variables, which meant that spooky action at a distance was a fact.
Alan Aspect later (1982) performed an experiment in which he showed that Bells’ Theorem, as it was called, had experimental validity.
www.carolla.com /quantum/QuantumComputers.htm   (4488 words)

  
 Science and Tarot
But if you understand a bit of quantum physics/mechanics, it becomes easier to understand how these readings may be working.
Bells Theorem states that, "No theory of reality compatible with quantum theory can require spatially separated events to be separate." This means that all distant events are in constant communication; interdependent and interconnected.
This implies that each and every single particle must know exactly what every other particle in the universe is doing in order to know what it, itself, needs to be doing at any and all times.
www.hotpinklotus.com /index.cfm/MenuItemID/108.htm   (1501 words)

  
 www.myspace.com/bellstheorem
What is wild is that people still ask about our old project that has long since died.
Bell's Theorem and it's industrial-politicore sound is comprised of Reverend Five.
great to see you ouys play again and to initiate in my friend into the new life of bell's theorem addiction....
www.myspace.com /bellstheorem   (1264 words)

  
 Consciousness - The Brain Mind Split
Although this is by no means generally accepted, many physicists observing quantum phenomena say that every particle is constantly in touch with every other particle in the universe, and this take place beyond the limitations of time and space.
This is stated in Bells Inequality Theorem mentioned above.
As its title suggests, it is a theory, though it has yet to be disproved.
www.dreamhawk.com /ware.htm   (3481 words)

  
 PhysOrgForum Science, Physics and Technology Discussion Forums -> Entanglement and reference frames
What you can't do is predetermine the value of that state before you collapse it so you might be able to send a message (faster than light).
This was stated in "Bells Theorem" and experiments proved that this indeed happened and quantum encryption is one practical consequence of this already in use.
Knowing the spin states of the photons is irrelevant, since the change in state occurs faster than ©, given the distance b/t the 2 photons was about 12 kilometers in the experiment.
forum.physorg.com /index.php?showtopic=1358   (5490 words)

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