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Hidden-variable theory

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which conditions a definite outcome for the collision. Ought we to hope later to discover such properties ... and determine them in individual cases? Or ought we to believe that the agreement of theory and experiment—as to the impossibility of prescribing conditions for a causal evolution—is a pre-established harmony founded on the nonexistence of such conditions? I myself am inclined to give up determinism in the world of atoms. But that is a philosophical question for which physical arguments alone are not decisive.
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macroscopic ball bouncing elastically between rigid barriers. He argues that such a quantum representation does not represent a specific ball, but "time ensemble of systems". As such the representation is correct, but incomplete because it does not represent the real individual macroscopic case. Einstein considered quantum mechanics incomplete "because the state function, in general, does not even describe the individual event/system".
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excluded the possibility that any extension of quantum theory (not necessarily in the form of local hidden variables) can help predict the outcomes of any measurement on any quantum state. In this sense, we show the following: under the assumption that measurement settings can be chosen freely, quantum theory really is complete".
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behavior of the system. Since these conditions constitute an inherent element of the description of any phenomenon to which the term "physical reality" can be properly attached, we see that the argumentation of the mentioned authors does not justify their conclusion that quantum-mechanical description is essentially incomplete."
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hile we consider ... a quantum mechanical treatment of the electromagnetic field ... as not yet finished, we consider quantum mechanics to be a closed theory, whose fundamental physical and mathematical assumptions are no longer susceptible of any modification.... On the question of the 'validity of
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Here the whole problem of determinism comes up. From the standpoint of our quantum mechanics there is no quantity which in any individual case causally fixes the consequence of the collision; but also experimentally we have so far no reason to believe that there are some inner properties of the atom
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The debate whether Quantum Mechanics is a complete theory and probabilities have a non-epistemic character (i.e. nature is intrinsically probabilistic) or whether it is a statistical approximation of a deterministic theory and probabilities are due to our ignorance of some parameters (i.e. they are
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Einstein, Podolsky and Rosen contains an ambiguity as regards the meaning of the expression "without in any way disturbing a system." ... ven at this stage , there is essentially the question of an influence on the very conditions which define the possible types of predictions regarding the future
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A possible weakness of Bohm's theory is that some (including Einstein, Pauli, and Heisenberg) feel that it looks contrived. (Indeed, Bohm thought this of his original formulation of the theory.) Bohm said he considered his theory to be unacceptable as a physical theory due to the guiding wave's
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Although there is no record of Einstein responding to Born and Heisenberg during the technical sessions of the Fifth Solvay Congress, he did challenge the completeness of quantum mechanics at various times. In his tribute article for Born's retirement he discussed the quantum representation of a
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Macroscopic physics requires classical mechanics which allows accurate predictions of mechanical motion with reproducible, high precision. Quantum phenomena require quantum mechanics, which allows accurate predictions of statistical averages only. If quantum states had hidden-variables awaiting
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published a proof that any extension of quantum mechanical theory, whether using hidden variables or otherwise, cannot provide a more accurate prediction of outcomes, assuming that observers can freely choose the measurement settings. Colbeck and Renner write: "In the present work, we have ...
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in Berlin, on 5 May 1927, titled "Bestimmt Schrödinger's Wellenmechanik die Bewegung eines Systems vollstÀndig oder nur im Sinne der Statistik?" ("Does Schrödinger's wave mechanics determine the motion of a system completely or only in the statistical sense?"). However, as the paper was being
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Hermann, G.: Die naturphilosophischen Grundlagen der Quantenmechanik (Auszug). Abhandlungen der Fries’schen Schule 6, 75–152 (1935). English translation: Chapter 15 of “Grete Hermann — Between physics and philosophy”, Elise Crull and Guido Bacciagaluppi, eds., Springer, 2016, 239- 278.
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the law of causality' we have this opinion: as long as one takes into account only experiments that lie in the domain of our currently acquired physical and quantum mechanical experience, the assumption of indeterminism in principle, here taken as fundamental, agrees with experience.
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prepared for publication in the academy's journal, Einstein decided to withdraw it, possibly because he discovered that, contrary to his intention, his use of Schrodinger's field to guide localized particles allowed just the kind of non-local influences he intended to avoid.
1001:. More fundamentally however, a successful model of quantum phenomena with hidden variables implies quantum entities with intrinsic values independent of measurements. Existing quantum mechanics asserts that state properties can only be known after a measurement. As 1835:, Princeton University Press, 1983, p. 117,: "But he still stood by his watchword, which he clothed in the words: 'God does not play at dice.' To which Bohr could only answer: 'But still, it cannot be for us to tell God, how he is to run the world.'" 1265:
Bohr is here choosing to define a "physical reality" as limited to a phenomenon that is immediately observable by an arbitrarily chosen and explicitly specified technique, using his own special definition of the term 'phenomenon'. He wrote in 1948:
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This paper, whose original title was "Elementare Uberlegungen zur Interpretation š der Grundlagen der Quanten-Mechanik", has been translated from the German by Dileep Karanth, Department of Physics, University of Wisconsin-Parkside, Kenosha,
1009:"It is a fundamental quantum doctrine that a measurement does not, in general, reveal a pre-existing value of the measured property. On the contrary, the outcome of a measurement is brought into being by the act of measurement itself..." 1831:"), to which I replied by pointing at the great caution, already called for by ancient thinkers, in ascribing attributes to Providence in everyday language." Werner Heisenberg, who also attended the congress, recalled the exchange in 1059:
Quantum mechanics is very worthy of respect. But an inner voice tells me this is not the genuine article after all. The theory delivers much but it hardly brings us closer to the Old One's secret. In any event, I am convinced that
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If, without in any way disturbing a system, we can predict with certainty (i.e., with probability equal to unity) the value of a physical quantity, then there exists an element of physical reality corresponding to this physical
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is performed, the electron goes through either one of the slits. Also, the slit passed through is not random but is governed by the (hidden) pilot wave, resulting in the wave pattern that is observed.
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The debates between Bohr and Einstein essentially concluded in 1935, when Einstein finally expressed what is widely considered his best argument for the incompleteness of quantum mechanics. Einstein,
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that have found violations of these inequalities up to 242 standard deviations. This rules out local hidden-variable theories, but does not rule out non-local ones. Theoretically, there could be
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had proposed in 1927 (and abandoned) – hence this theory is commonly called "de Broglie-Bohm theory". Assuming the validity of Bell's theorem, any deterministic hidden-variable theory that is
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Shortly after making his famous "God does not play dice" comment, Einstein attempted to formulate a deterministic counter proposal to quantum mechanics, presenting a paper at a meeting of the
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described a model which, "under a different free choice assumption violates for almost all states of a bipartite two-level system, in a possibly experimentally testable way".
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experiments have demonstrated broad violation of these constraints, ruling out such theories. Bell's theorem, however, does not rule out the possibility of nonlocal theories or
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their definition of a "complete" description as one that uniquely determines the values of all its measurable properties. Einstein later summarized their argument as follows:
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In other words, whereas a hidden-variable theory would imply intrinsic particle properties, in quantum mechanics an electron has no definite position and velocity to even
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The Collected Papers of Albert Einstein, Volume 15: The Berlin Years: Writings & Correspondence, June 1925-May 1927 (English Translation Supplement), p. 512
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The Collected Papers of Albert Einstein, Volume 15: The Berlin Years: Writings & Correspondence, June 1925-May 1927 (English Translation Supplement), p. 403
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the quantum particle, e.g. an electron, and a hidden 'guiding wave' that governs its motion. Thus, in this theory electrons are quite clearly particles. When a
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ingenious new measurement technologies, then the latter (statistical results) might be convertible to a form of the former (classical-mechanical motion).
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made a presentation summarizing the recent tremendous theoretical development of quantum mechanics. At the conclusion of the presentation, they declared:
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Born's interpretation of the wave function was criticized by Schrödinger, who had previously attempted to interpret it in real physical terms, but
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function of the total system. This determination, however, gives a result which depends upon which of the physical quantities (observables) of
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constitutes an implicate (hidden) order which organizes a particle, and which may itself be the result of yet a further implicate order: a
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The Born–Einstein letters: correspondence between Albert Einstein and Max and Hedwig Born from 1916–1955, with commentaries by Max Born
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after the interaction which cannot reasonably be considered to depend on the particular measurement we perform on the system
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had presented a proof that there could be no "hidden parameters", but the validity of von Neumann's proof was questioned by
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to refer exclusively to observations obtained under specified circumstances, including an account of the whole experiment."
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which served to guide its trajectory through space. The theory was subject to criticism at the Congress, particularly by
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reportedly replied to Einstein's later expression of this sentiment by advising him to "stop telling God what to do."
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Einstein, Albert (2011). "Elementary Considerations on the Interpretation of the Foundations of Quantum Mechanics".
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published a paper, in which he was the first to clearly enunciate the probabilistic interpretation of the quantum
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proposed a hidden variable theory. Bohm unknowingly rediscovered (and extended) the idea that Louis de Broglie's
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Giancarlo Ghirardi; Raffaele Romano (2013). "Onthological models predictively inequivalent to quantum theory".
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function after the interaction has taken place. Let us now determine the physical state of the partial system
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a hidden-variable theory, and necessarily so. The major reference for Bohm's theory today is his book with
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Symposium on the Foundations of Modern Physics: 50 years of the Einstein–Podolsky–Rosen Gedankenexperiment
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have been measured (for instance, coordinates or momenta). Since there can be only one physical state of
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Michael K.-H. Kiessling: "Misleading Signposts Along the de Broglie–Bohm Road to Quantum Mechanics",
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existence in an abstract multi-dimensional configuration space, rather than three-dimensional space.
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As a more appropriate way of expression, one may strongly advocate limitation of the use of the word
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function cannot be interpreted as a (complete) description of a physical state of a single system.
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could not be explained by local hidden variables, the Bell inequality would be violated. Another
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Such a classical mechanics would eliminate unsettling characteristics of quantum theory like the
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Max Born and Werner Heisenberg, "Quantum mechanics", proceedings of the Fifth Solvay Congress.
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function is not unambiguously coordinated to the physical state. This coordination of several
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as completely as possible by measurements. Then quantum mechanics allows us to determine the
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Genovese, M. (2005). "Research on hidden variable theories: A review of recent progresses".
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function before their interaction be given. Then the Schrödinger equation will furnish the
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in his essay "Discussion with Einstein on Epistemological Problems in Atomic Physics", in
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Kwiat P. G.; et al. (1999). "Ultrabright source of polarization-entangled photons".
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This was, of course, in conflict with the definition used by the EPR paper, as follows:
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that if local hidden variables exist, certain experiments could be performed involving
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Gerard 't Hooft (2009). "Entangled quantum states in a local deterministic theory".
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This is a common paraphrasing. Bohr recollected his reply to Einstein at the 1927
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which organizes a field. Nowadays Bohm's theory is considered to be one of many
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of the state of a system previous to measurement is assumed to be a part of the
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Declaration of completeness of quantum mechanics, and the Bohr–Einstein debates
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loophole and proposed some ideas to construct local deterministic models.
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might indicate quantum mechanics is an incomplete description of reality.
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This article is about a class of mechanics theories. For other uses, see
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Gerard 't Hooft (2007). "The Free-Will Postulate in Quantum Mechanics".
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which interact with each other only during a limited time. Let the
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physical model which seeks to explain the probabilistic nature of
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has disputed the validity of Bell's theorem on the basis of the
2426:. Routledge & Kegan Paul and D. Van Nostrand. p. 110. 1188:
Consider a mechanical system consisting of two partial systems
2190:, Cohen, R.S., Stachel, J.J. (editors), D. Riedel, Dordrecht, 1074: 920:
by introducing additional (possibly inaccessible) variables.
2157:(1948). "On the notions of causality and complementarity". 2446: 1788: 1042:
earlier in the year. Born concluded the paper as follows:
1630:"On the Problem of Hidden Variables in Quantum Mechanics" 1097:
his own version of a deterministic hidden-variable theory
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The Shaky Game: Einstein Realism and the Quantum Theory
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that affect the validity of the experimental findings.
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epistemic) dates to the beginning of the theory itself
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theory to explain quantum phenomena. Nevertheless, it
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be allowed. One notable hidden-variable theory is the
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proved that correlations between particles under any
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Mermin, N. David; Schack, RĂŒdiger (September 2018).
1677:"Hidden variables and the two theorems of John Bell" 2281: 2260: 2507: 2440: 2382:International Studies in the Philosophy of Science 1996:"Homer Nodded: Von Neumann's Surprising Oversight" 118: 3448: 2623:. Singapore: World Scientific. pp. 129–149. 2585:(1982). "Is quantum theory universally valid?". 2372: 1937:"Einstein's Interpretation of Quantum Mechanics" 1356: 1121:Also at the Fifth Solvay Congress, Max Born and 1256:Bohr answered Einstein's challenge as follows: 1244:functions to the same physical state of system 2053:Einstein, A.; Podolsky, B.; Rosen, N. (1935). 1876:. New York: Oxford University Press. pp.  1500:Einstein, A.; Podolsky, B.; Rosen, N. (1935). 2655: 977:must obey certain constraints. Subsequently, 928:mathematical formulation of quantum mechanics 885: 1993: 113: 87: 2417: 2415: 2375:"On some early objections to Bohm's theory" 2207: 1324:concerning hidden-variable theories is the 2662: 2648: 2577: 2421: 2323:, volume 40, number 4, 2010, pp. 418–429 ( 2094:Einstein A (1936). "Physics and Reality". 2093: 1934: 1872:The Quantum Story: A History in 40 Moments 1401:In Bohm's interpretation, the (non-local) 1075:Early attempts at hidden-variable theories 892: 878: 2527: 2490: 2464: 2287: 2266: 2221: 2138: 2078: 2029: 2011: 1960: 1915: 1692: 1556: 1527: 1216:from the measurements made, and from the 2412: 1909: 1542: 2635:. Chicago: University of Chicago Press. 2153: 1867: 1599: 14: 3449: 2615: 2424:Causality and Chance in Modern Physics 2112: 1825:Albert Einstein, Philosopher–Scientist 1742:"Zur Quantenmechanik der StoßvorgĂ€nge" 1674: 1432: 1138: 2669: 2643: 2447:Roger Colbeck; Renato Renner (2011). 1495: 1493: 2627: 2304:"David Bohm and the Implicate Order" 1739: 1627: 1411:interpretations of quantum mechanics 24: 2171:10.1111/j.1746-8361.1948.tb00703.x 1490: 424:Sum-over-histories (path integral) 110: 84: 40:Part of a series of articles about 25: 3473: 2188:Selected Papers of LĂ©on Rosenfeld 2096:Journal of the Franklin Institute 1600:Markoff, Jack (21 October 2015). 1593: 1312:where the result would satisfy a 1289: 61: 3431: 3430: 2340:(2010), Vol. 18, No. 4, 469–480. 1935:Ballentine, L. E. (1972-12-01). 932:Heisenberg uncertainty principle 27:Type of quantum mechanics theory 2571: 2366: 2343: 2330: 2313: 2296: 2275: 2254: 2201: 2177: 2147: 2106: 2087: 2046: 1987: 1977: 1928: 1903: 1894: 1861: 1849: 1838: 1675:Mermin, N. David (1993-07-01). 1212:function of the partial system 1038:, which had been introduced by 3380:Relativistic quantum mechanics 2546:10.1103/PhysRevLett.110.170404 1813: 1809:. Macmillan. 1971. p. 91. 1799: 1733: 1668: 1621: 1536: 1468:Einstein's thought experiments 1335:and Paul Kwiat have performed 1161: 574:Relativistic quantum mechanics 106: 99: 80: 13: 1: 3358:Quantum statistical mechanics 3135:Quantum differential calculus 3057:Delayed-choice quantum eraser 2825:Symmetry in quantum mechanics 1575:10.1016/j.physrep.2005.03.003 1484: 1473:Pusey–Barrett–Rudolph theorem 1357:Bohm's hidden-variable theory 1236:it may be concluded that the 988: 614:Quantum statistical mechanics 1628:Bell, John S. (1966-07-01). 975:local hidden variable theory 7: 3160:Quantum stochastic calculus 3150:Quantum measurement problem 3072:Mach–Zehnder interferometer 2588:American Journal of Physics 1941:American Journal of Physics 1460: 584:Quantum information science 10: 3478: 1425:, published posthumously. 1360: 1293: 1165: 1114: 1020: 29: 3426: 3388: 3340: 3220:Quantum complexity theory 3198:Quantum cellular automata 3173: 3105: 3039: 2952: 2901: 2888:Path integral formulation 2855: 2720: 2677: 2373:Wayne C. Myrvold (2003). 2349:D. Bohm and B. J. Hiley, 2031:10.1007/s10701-018-0197-5 1829:ob der liebe Gott wĂŒrfelt 1711:10.1103/RevModPhys.65.803 1681:Reviews of Modern Physics 1654:10.1103/RevModPhys.38.447 1634:Reviews of Modern Physics 3287:Quantum machine learning 3267:Quantum key distribution 3257:Quantum image processing 3247:Quantum error correction 3097:Wheeler's delayed choice 2240:10.1103/physreva.60.r773 1856:Albert Einstein Archives 1833:Encounters with Einstein 1026:"God does not play dice" 619:Quantum machine learning 372:Wheeler's delayed-choice 3203:Quantum finite automata 2516:Physical Review Letters 1413:. Some consider it the 329:Leggett–Garg inequality 3462:Hidden variable theory 3307:Quantum neural network 2394:10.1080/02698590305233 2352:The Undivided Universe 2321:Foundations of Physics 2140:10.1103/physrev.48.696 2080:10.1103/physrev.47.777 2000:Foundations of Physics 1746:Zeitschrift fĂŒr Physik 1529:10.1103/PhysRev.47.777 1396:double-slit experiment 1363:de Broglie–Bohm theory 1326:Kochen–Specker theorem 1287: 1276: 1263: 1254: 1132: 1066: 1049: 1011: 940:de Broglie–Bohm theory 910:hidden-variable theory 120: 18:Hidden variable theory 3332:Quantum teleportation 2845:Wave–particle duality 2453:Nature Communications 1868:Baggott, Jim (2011). 1341:experimental problems 1280: 1268: 1258: 1248:shows again that the 1186: 1127: 1117:Bohr–Einstein debates 1089:Fifth Solvay Congress 1057: 1044: 1007: 999:uncertainty principle 936:nonlocal interactions 314:Elitzur–Vaidman 304:Davisson–Germer 121: 3363:Quantum field theory 3292:Quantum metamaterial 3237:Quantum cryptography 2967:Consistent histories 1407:superimplicate order 1318:quantum entanglement 1310:quantum entanglement 1064:is not playing dice. 963:quantum entanglement 579:Quantum field theory 491:Consistent histories 128:Schrödinger equation 55: 3457:Quantum measurement 3348:Quantum fluctuation 3317:Quantum programming 3277:Quantum logic gates 3262:Quantum information 3242:Quantum electronics 2702:Classical mechanics 2601:1982AmJPh..50..807P 2538:2013PhRvL.110q0404G 2475:2011NatCo...2..411C 2422:David Bohm (1957). 2355:, Routledge, 1993, 2232:1999PhRvA..60..773K 2131:1935PhRv...48..696B 2071:1935PhRv...47..777E 2022:2018FoPh...48.1007M 1953:1972AmJPh..40.1763B 1758:1926ZPhy...37..863B 1703:1993RvMP...65..803M 1646:1966RvMP...38..447B 1567:2005PhR...413..319G 1520:1935PhRv...47..777E 1433:Recent developments 1331:Physicists such as 1139:von Neumann's proof 1081:Academy of Sciences 367:Stern–Gerlach 164:Classical mechanics 3401:in popular culture 3183:Quantum algorithms 3031:Von Neumann–Wigner 3011:Objective collapse 2707:Old quantum theory 2483:10.1038/ncomms1416 1766:10.1007/BF01397477 1740:Born, Max (1926). 1558:quant-ph/0701071v1 1478:Spekkens toy model 1451:Giancarlo Ghirardi 1306:his famous theorem 1180:had proposed in a 555:Von Neumann–Wigner 535:Objective-collapse 334:Mach–Zehnder 324:Leggett inequality 319:Franck–Hertz 169:Old quantum theory 116: 3444: 3443: 3418:Quantum mysticism 3396:Schrödinger's cat 3327:Quantum simulator 3297:Quantum metrology 3225:Quantum computing 3188:Quantum amplifier 3165:Quantum spacetime 3130:Quantum cosmology 3120:Quantum chemistry 2820:Scattering theory 2768:Zero-point energy 2763:Degenerate levels 2671:Quantum mechanics 2210:Physical Review A 2196:978-90-277-0652-2 2165:(3–4): 312–319 . 1962:10.1119/1.1987060 1947:(12): 1763–1771. 1887:978-0-19-956684-6 1449:In January 2013, 1403:quantum potential 1383:would have to be 1381:quantum mechanics 1373:pilot wave theory 1302:John Stewart Bell 1156:John Stewart Bell 1123:Werner Heisenberg 1040:Erwin Schrödinger 971:eponymous theorem 967:John Stewart Bell 918:quantum mechanics 902: 901: 609:Scattering theory 589:Quantum computing 362:Schrödinger's cat 294:Bell's inequality 102: 77: 46:Quantum mechanics 16:(Redirected from 3469: 3434: 3433: 3145:Quantum geometry 3140:Quantum dynamics 2997:Superdeterminism 2929:Rarita–Schwinger 2878:Matrix mechanics 2733:Bra–ket notation 2664: 2657: 2650: 2641: 2640: 2636: 2624: 2612: 2566: 2565: 2531: 2511: 2505: 2504: 2494: 2468: 2444: 2438: 2437: 2419: 2410: 2409: 2404:. Archived from 2379: 2370: 2364: 2347: 2341: 2334: 2328: 2317: 2311: 2308:Sunrise magazine 2300: 2294: 2293: 2291: 2279: 2273: 2272: 2270: 2268:quant-ph/0701097 2258: 2252: 2251: 2225: 2223:quant-ph/9810003 2216:(2): R773–R776. 2205: 2199: 2181: 2175: 2174: 2151: 2145: 2144: 2142: 2110: 2104: 2103: 2091: 2085: 2084: 2082: 2050: 2044: 2043: 2033: 2015: 2006:(9): 1007–1020. 1991: 1985: 1981: 1975: 1974: 1964: 1932: 1926: 1925: 1919: 1907: 1901: 1898: 1892: 1891: 1875: 1865: 1859: 1858:reel 2, item 100 1853: 1847: 1842: 1836: 1817: 1811: 1810: 1803: 1797: 1792: 1786: 1785: 1737: 1731: 1730: 1696: 1672: 1666: 1665: 1625: 1619: 1618: 1616: 1614: 1597: 1591: 1590: 1560: 1540: 1534: 1533: 1531: 1497: 1437:In August 2011, 1351:superdeterminism 1148:John von Neumann 1093:Louis de Broglie 983:superdeterminism 969:in 1964, in his 894: 887: 880: 521:Superdeterminism 174:Bra–ket notation 125: 123: 122: 117: 109: 104: 103: 95: 83: 78: 76: 65: 37: 36: 21: 3477: 3476: 3472: 3471: 3470: 3468: 3467: 3466: 3447: 3446: 3445: 3440: 3422: 3408:Wigner's friend 3384: 3375:Quantum gravity 3336: 3322:Quantum sensing 3302:Quantum network 3282:Quantum machine 3252:Quantum imaging 3215:Quantum circuit 3210:Quantum channel 3169: 3115:Quantum biology 3101: 3077:Elitzur–Vaidman 3052:Davisson–Germer 3035: 2987:Hidden-variable 2977:de Broglie–Bohm 2954:Interpretations 2948: 2897: 2851: 2738:Complementarity 2716: 2673: 2668: 2609:10.1119/1.13086 2583:Zurek, Wojciech 2574: 2569: 2512: 2508: 2445: 2441: 2434: 2420: 2413: 2377: 2371: 2367: 2348: 2344: 2338:European Review 2335: 2331: 2318: 2314: 2301: 2297: 2280: 2276: 2259: 2255: 2206: 2202: 2182: 2178: 2152: 2148: 2119:Physical Review 2113:Bohr N (1935). 2111: 2107: 2092: 2088: 2065:(10): 777–780. 2059:Physical Review 2051: 2047: 1992: 1988: 1982: 1978: 1933: 1929: 1908: 1904: 1899: 1895: 1888: 1866: 1862: 1854: 1850: 1843: 1839: 1821:Solvay Congress 1818: 1814: 1805: 1804: 1800: 1793: 1789: 1752:(12): 863–867. 1738: 1734: 1673: 1669: 1626: 1622: 1612: 1610: 1598: 1594: 1545:Physics Reports 1541: 1537: 1514:(10): 777–780. 1507:Physical Review 1498: 1491: 1487: 1482: 1463: 1455:Raffaele Romano 1435: 1365: 1359: 1347:Gerard 't Hooft 1314:Bell inequality 1304:showed through 1298: 1292: 1232:separated from 1170: 1164: 1141: 1119: 1113: 1077: 1053:Albert Einstein 1028: 1023: 1003:N. David Mermin 991: 947:Albert Einstein 898: 869: 868: 867: 632: 624: 623: 569: 568:Advanced topics 561: 560: 559: 511:Hidden-variable 501:de Broglie–Bohm 480: 478:Interpretations 470: 469: 468: 438: 430: 429: 428: 386: 378: 377: 376: 343: 299:CHSH inequality 288: 280: 279: 278: 207:Complementarity 201: 193: 192: 191: 159: 130: 105: 94: 93: 79: 69: 64: 56: 53: 52: 35: 32:Hidden variable 28: 23: 22: 15: 12: 11: 5: 3475: 3465: 3464: 3459: 3442: 3441: 3439: 3438: 3427: 3424: 3423: 3421: 3420: 3415: 3410: 3405: 3404: 3403: 3392: 3390: 3386: 3385: 3383: 3382: 3377: 3372: 3371: 3370: 3360: 3355: 3353:Casimir effect 3350: 3344: 3342: 3338: 3337: 3335: 3334: 3329: 3324: 3319: 3314: 3312:Quantum optics 3309: 3304: 3299: 3294: 3289: 3284: 3279: 3274: 3269: 3264: 3259: 3254: 3249: 3244: 3239: 3234: 3233: 3232: 3222: 3217: 3212: 3207: 3206: 3205: 3195: 3190: 3185: 3179: 3177: 3171: 3170: 3168: 3167: 3162: 3157: 3152: 3147: 3142: 3137: 3132: 3127: 3122: 3117: 3111: 3109: 3103: 3102: 3100: 3099: 3094: 3089: 3087:Quantum eraser 3084: 3079: 3074: 3069: 3064: 3059: 3054: 3049: 3043: 3041: 3037: 3036: 3034: 3033: 3028: 3023: 3018: 3013: 3008: 3003: 3002: 3001: 3000: 2999: 2984: 2979: 2974: 2969: 2964: 2958: 2956: 2950: 2949: 2947: 2946: 2941: 2936: 2931: 2926: 2921: 2916: 2911: 2905: 2903: 2899: 2898: 2896: 2895: 2890: 2885: 2880: 2875: 2870: 2865: 2859: 2857: 2853: 2852: 2850: 2849: 2848: 2847: 2842: 2832: 2827: 2822: 2817: 2812: 2807: 2802: 2797: 2792: 2787: 2782: 2777: 2772: 2771: 2770: 2765: 2760: 2755: 2745: 2743:Density matrix 2740: 2735: 2730: 2724: 2722: 2718: 2717: 2715: 2714: 2709: 2704: 2699: 2698: 2697: 2687: 2681: 2679: 2675: 2674: 2667: 2666: 2659: 2652: 2644: 2638: 2637: 2625: 2613: 2595:(9): 807–810. 2573: 2570: 2568: 2567: 2522:(17): 170404. 2506: 2439: 2432: 2411: 2408:on 2014-07-02. 2365: 2342: 2329: 2312: 2306:. Appeared in 2295: 2274: 2253: 2200: 2176: 2146: 2105: 2086: 2045: 1986: 1976: 1927: 1902: 1893: 1886: 1860: 1848: 1837: 1812: 1798: 1787: 1732: 1687:(3): 803–815. 1667: 1640:(3): 447–452. 1620: 1607:New York Times 1592: 1551:(6): 319–396. 1535: 1488: 1486: 1483: 1481: 1480: 1475: 1470: 1464: 1462: 1459: 1434: 1431: 1361:Main article: 1358: 1355: 1296:Bell's theorem 1294:Main article: 1291: 1290:Bell's theorem 1288: 1174:Boris Podolsky 1166:Main article: 1163: 1160: 1140: 1137: 1115:Main article: 1112: 1109: 1105:Wolfgang Pauli 1076: 1073: 1030:In June 1926, 1027: 1024: 1022: 1019: 990: 987: 951:Boris Podolsky 900: 899: 897: 896: 889: 882: 874: 871: 870: 866: 865: 860: 855: 850: 845: 840: 835: 830: 825: 820: 815: 810: 805: 800: 795: 790: 785: 780: 775: 770: 765: 760: 755: 750: 745: 740: 735: 730: 725: 720: 715: 710: 705: 700: 695: 690: 685: 680: 675: 670: 665: 660: 655: 650: 645: 640: 634: 633: 630: 629: 626: 625: 622: 621: 616: 611: 606: 604:Density matrix 601: 596: 591: 586: 581: 576: 570: 567: 566: 563: 562: 558: 557: 552: 547: 542: 537: 532: 527: 526: 525: 524: 523: 508: 503: 498: 493: 488: 482: 481: 476: 475: 472: 471: 467: 466: 461: 456: 451: 446: 440: 439: 436: 435: 432: 431: 427: 426: 421: 416: 411: 406: 401: 395: 394: 393: 387: 384: 383: 380: 379: 375: 374: 369: 364: 358: 357: 356: 355: 354: 352:Delayed-choice 347:Quantum eraser 342: 341: 336: 331: 326: 321: 316: 311: 306: 301: 296: 290: 289: 286: 285: 282: 281: 277: 276: 275: 274: 264: 259: 254: 249: 244: 239: 237:Quantum number 234: 229: 224: 219: 214: 209: 203: 202: 199: 198: 195: 194: 190: 189: 184: 178: 177: 176: 171: 166: 160: 157: 156: 153: 152: 151: 150: 145: 140: 132: 131: 126: 115: 112: 108: 101: 98: 92: 89: 86: 82: 75: 72: 68: 63: 60: 49: 48: 42: 41: 26: 9: 6: 4: 3: 2: 3474: 3463: 3460: 3458: 3455: 3454: 3452: 3437: 3429: 3428: 3425: 3419: 3416: 3414: 3411: 3409: 3406: 3402: 3399: 3398: 3397: 3394: 3393: 3391: 3387: 3381: 3378: 3376: 3373: 3369: 3366: 3365: 3364: 3361: 3359: 3356: 3354: 3351: 3349: 3346: 3345: 3343: 3339: 3333: 3330: 3328: 3325: 3323: 3320: 3318: 3315: 3313: 3310: 3308: 3305: 3303: 3300: 3298: 3295: 3293: 3290: 3288: 3285: 3283: 3280: 3278: 3275: 3273: 3272:Quantum logic 3270: 3268: 3265: 3263: 3260: 3258: 3255: 3253: 3250: 3248: 3245: 3243: 3240: 3238: 3235: 3231: 3228: 3227: 3226: 3223: 3221: 3218: 3216: 3213: 3211: 3208: 3204: 3201: 3200: 3199: 3196: 3194: 3191: 3189: 3186: 3184: 3181: 3180: 3178: 3176: 3172: 3166: 3163: 3161: 3158: 3156: 3153: 3151: 3148: 3146: 3143: 3141: 3138: 3136: 3133: 3131: 3128: 3126: 3125:Quantum chaos 3123: 3121: 3118: 3116: 3113: 3112: 3110: 3108: 3104: 3098: 3095: 3093: 3092:Stern–Gerlach 3090: 3088: 3085: 3083: 3080: 3078: 3075: 3073: 3070: 3068: 3065: 3063: 3060: 3058: 3055: 3053: 3050: 3048: 3045: 3044: 3042: 3038: 3032: 3029: 3027: 3026:Transactional 3024: 3022: 3019: 3017: 3016:Quantum logic 3014: 3012: 3009: 3007: 3004: 2998: 2995: 2994: 2993: 2990: 2989: 2988: 2985: 2983: 2980: 2978: 2975: 2973: 2970: 2968: 2965: 2963: 2960: 2959: 2957: 2955: 2951: 2945: 2942: 2940: 2937: 2935: 2932: 2930: 2927: 2925: 2922: 2920: 2917: 2915: 2912: 2910: 2907: 2906: 2904: 2900: 2894: 2891: 2889: 2886: 2884: 2881: 2879: 2876: 2874: 2871: 2869: 2866: 2864: 2861: 2860: 2858: 2854: 2846: 2843: 2841: 2838: 2837: 2836: 2835:Wave function 2833: 2831: 2828: 2826: 2823: 2821: 2818: 2816: 2813: 2811: 2810:Superposition 2808: 2806: 2805:Quantum state 2803: 2801: 2798: 2796: 2793: 2791: 2788: 2786: 2783: 2781: 2778: 2776: 2773: 2769: 2766: 2764: 2761: 2759: 2758:Excited state 2756: 2754: 2751: 2750: 2749: 2746: 2744: 2741: 2739: 2736: 2734: 2731: 2729: 2726: 2725: 2723: 2719: 2713: 2710: 2708: 2705: 2703: 2700: 2696: 2693: 2692: 2691: 2688: 2686: 2683: 2682: 2680: 2676: 2672: 2665: 2660: 2658: 2653: 2651: 2646: 2645: 2642: 2634: 2630: 2626: 2622: 2618: 2614: 2610: 2606: 2602: 2598: 2594: 2590: 2589: 2584: 2580: 2576: 2575: 2563: 2559: 2555: 2551: 2547: 2543: 2539: 2535: 2530: 2525: 2521: 2517: 2510: 2502: 2498: 2493: 2488: 2484: 2480: 2476: 2472: 2467: 2462: 2458: 2454: 2450: 2443: 2435: 2433:0-8122-1002-6 2429: 2425: 2418: 2416: 2407: 2403: 2399: 2395: 2391: 2387: 2383: 2376: 2369: 2362: 2361:0-415-06588-7 2358: 2354: 2353: 2346: 2339: 2333: 2326: 2322: 2316: 2309: 2305: 2302:David Pratt: 2299: 2290: 2285: 2278: 2269: 2264: 2257: 2249: 2245: 2241: 2237: 2233: 2229: 2224: 2219: 2215: 2211: 2204: 2197: 2193: 2189: 2185: 2184:Rosenfeld, L. 2180: 2172: 2168: 2164: 2160: 2156: 2150: 2141: 2136: 2132: 2128: 2124: 2120: 2116: 2109: 2101: 2097: 2090: 2081: 2076: 2072: 2068: 2064: 2060: 2056: 2049: 2041: 2037: 2032: 2027: 2023: 2019: 2014: 2009: 2005: 2001: 1997: 1990: 1980: 1972: 1968: 1963: 1958: 1954: 1950: 1946: 1942: 1938: 1931: 1924: 1918: 1913: 1906: 1897: 1889: 1883: 1879: 1874: 1873: 1864: 1857: 1852: 1846: 1841: 1834: 1830: 1826: 1822: 1816: 1808: 1802: 1796: 1791: 1783: 1779: 1775: 1771: 1767: 1763: 1759: 1755: 1751: 1748:(in German). 1747: 1743: 1736: 1728: 1724: 1720: 1716: 1712: 1708: 1704: 1700: 1695: 1690: 1686: 1682: 1678: 1671: 1663: 1659: 1655: 1651: 1647: 1643: 1639: 1635: 1631: 1624: 1609: 1608: 1603: 1596: 1589: 1584: 1580: 1576: 1572: 1568: 1564: 1559: 1554: 1550: 1546: 1539: 1530: 1525: 1521: 1517: 1513: 1509: 1508: 1503: 1496: 1494: 1489: 1479: 1476: 1474: 1471: 1469: 1466: 1465: 1458: 1456: 1452: 1447: 1444: 1443:Renato Renner 1440: 1439:Roger Colbeck 1430: 1426: 1424: 1420: 1416: 1412: 1408: 1404: 1399: 1397: 1393: 1390:Bohm posited 1388: 1386: 1382: 1378: 1374: 1370: 1364: 1354: 1352: 1348: 1344: 1342: 1338: 1334: 1329: 1327: 1323: 1322:no-go theorem 1319: 1315: 1311: 1307: 1303: 1297: 1286: 1285: 1279: 1275: 1273: 1267: 1262: 1257: 1253: 1251: 1247: 1243: 1239: 1235: 1231: 1227: 1223: 1219: 1215: 1211: 1207: 1203: 1199: 1195: 1191: 1185: 1183: 1179: 1175: 1169: 1159: 1157: 1154:and later by 1153: 1152:Grete Hermann 1149: 1146: 1145:1932 textbook 1136: 1131: 1126: 1124: 1118: 1108: 1106: 1102: 1098: 1094: 1090: 1085: 1082: 1072: 1070: 1065: 1063: 1056: 1054: 1048: 1043: 1041: 1037: 1036:wave function 1033: 1018: 1016: 1010: 1006: 1004: 1000: 995: 986: 984: 980: 976: 972: 968: 964: 960: 956: 952: 948: 943: 941: 937: 933: 929: 925: 924:Indeterminacy 921: 919: 915: 914:deterministic 911: 907: 895: 890: 888: 883: 881: 876: 875: 873: 872: 864: 861: 859: 856: 854: 851: 849: 846: 844: 841: 839: 836: 834: 831: 829: 826: 824: 821: 819: 816: 814: 811: 809: 806: 804: 801: 799: 796: 794: 791: 789: 786: 784: 781: 779: 776: 774: 771: 769: 766: 764: 761: 759: 756: 754: 751: 749: 746: 744: 741: 739: 736: 734: 731: 729: 726: 724: 721: 719: 716: 714: 711: 709: 706: 704: 701: 699: 696: 694: 691: 689: 686: 684: 681: 679: 676: 674: 671: 669: 666: 664: 661: 659: 656: 654: 651: 649: 646: 644: 641: 639: 636: 635: 628: 627: 620: 617: 615: 612: 610: 607: 605: 602: 600: 597: 595: 594:Quantum chaos 592: 590: 587: 585: 582: 580: 577: 575: 572: 571: 565: 564: 556: 553: 551: 550:Transactional 548: 546: 543: 541: 540:Quantum logic 538: 536: 533: 531: 528: 522: 519: 518: 517: 514: 513: 512: 509: 507: 504: 502: 499: 497: 494: 492: 489: 487: 484: 483: 479: 474: 473: 465: 462: 460: 457: 455: 452: 450: 447: 445: 442: 441: 434: 433: 425: 422: 420: 417: 415: 412: 410: 407: 405: 402: 400: 397: 396: 392: 389: 388: 382: 381: 373: 370: 368: 365: 363: 360: 359: 353: 350: 349: 348: 345: 344: 340: 337: 335: 332: 330: 327: 325: 322: 320: 317: 315: 312: 310: 307: 305: 302: 300: 297: 295: 292: 291: 284: 283: 273: 270: 269: 268: 267:Wave function 265: 263: 260: 258: 255: 253: 250: 248: 247:Superposition 245: 243: 240: 238: 235: 233: 230: 228: 225: 223: 220: 218: 215: 213: 210: 208: 205: 204: 197: 196: 188: 185: 183: 180: 179: 175: 172: 170: 167: 165: 162: 161: 155: 154: 149: 146: 144: 141: 139: 136: 135: 134: 133: 129: 96: 90: 73: 70: 66: 58: 51: 50: 47: 44: 43: 39: 38: 33: 19: 3155:Quantum mind 3067:Franck–Hertz 2986: 2909:Klein–Gordon 2863:Formulations 2856:Formulations 2785:Interference 2775:Entanglement 2753:Ground state 2748:Energy level 2721:Fundamentals 2685:Introduction 2632: 2629:Fine, Arthur 2620: 2592: 2586: 2579:Peres, Asher 2572:Bibliography 2519: 2515: 2509: 2456: 2452: 2442: 2423: 2406:the original 2385: 2381: 2368: 2350: 2345: 2337: 2332: 2320: 2315: 2307: 2298: 2277: 2256: 2213: 2209: 2203: 2187: 2179: 2162: 2158: 2149: 2122: 2118: 2108: 2099: 2095: 2089: 2062: 2058: 2048: 2003: 1999: 1989: 1979: 1944: 1940: 1930: 1921: 1905: 1896: 1871: 1863: 1851: 1840: 1832: 1828: 1824: 1815: 1806: 1801: 1790: 1749: 1745: 1735: 1684: 1680: 1670: 1637: 1633: 1623: 1611:. 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Index

Hidden variable theory
Hidden variable
Quantum mechanics
Schrödinger equation
Introduction
Glossary
History
Classical mechanics
Old quantum theory
Bra–ket notation
Hamiltonian
Interference
Complementarity
Decoherence
Entanglement
Energy level
Measurement
Nonlocality
Quantum number
State
Superposition
Symmetry
Tunnelling
Uncertainty
Wave function
Collapse
Bell's inequality
CHSH inequality
Davisson–Germer
Double-slit

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