Use of inequalities for the experimental test of a general conception of the foundations of microphysics. II

d’Espagnat, Bernard

doi:10.1103/physrevd.18.349

Cited by 6 publications

(1 citation statement)

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“…In this case, violation of such inequalities by quantum predictions and by experimental results fitting with quantum predictions, can be accounted for in two ways. Either there exist non-36 Brukner (2018) 37 Bong et al (2020) 38 Brukner (2020) 39 D 'Espagnat (1975) 40 Some authors have challenged the necessity of the first assumption. See Laudisa (2019).…”

Section: Non-locality or Transcendental Reduction?mentioning

confidence: 99%

Is the life-world reduction sufficient in quantum physics?

Bitbol¹

2020

Cont Philos Rev

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According to Husserl, the epochè (or suspension of judgment) must be left incomplete. It is to be performed step by step, thus defining various layers of "reduction". In phenomenology at least two such layers can be distinguished: the lifeworld reduction, and the transcendental reduction. Quantum physics was born from a particular variety of the life-world reduction: reduction to observables according to Heisenberg, and reduction to classical-like properties of experimental devices according to Bohr. But QBism has challenged this limited version of the phenomenological reduction advocated by the Copenhagen interpretation. QBists claim that quantum states are "expectations about experiences of pointer readings", rather than expectations about pointer positions. Their focus on lived experience, not just on macroscopic variables, is tantamount to performing the transcendental reduction instead of stopping at the relatively superficial layer of the life-world reduction. I will show that quantum physics indeed gives us several reasons to go the whole way down to the deepest variety of phenomenological reduction, may be even farther than the standard QBist view: not only reduction to experience, or to "pure consciousness", but also reduction to the "living present".

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Section: Non-locality or Transcendental Reduction?mentioning

confidence: 99%

Is the life-world reduction sufficient in quantum physics?

Bitbol¹

2020

Cont Philos Rev

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Generalized absorber theory and the Einstein-Podolsky-Rosen paradox

1980

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A generalized form of %heeler-Feynman absorber theory is used to explain the quantum-mechanical paradox proposed by Einstein, Podolsky, and Rosen (EPR). The advanced solutions of the electromagnetic wave equation and of relativistic quantum-mechanical wave equations are shown to play the role of "verifier" in quantum-mechanical "transactions, " providing microscopic communication paths between detectors across spacelike intervals in violation of the EPR locality postulate. The principle of causality is discussed in the context of this approach, and possibilities for experimental tests of the theory are examined. I. THE EINSTEIN-PODOLSKY-ROSEN PARADOX AND THE BELL INEQUALITY The quantum-mechanical paradox proposed by Einstein, Podolsky, and Rosen' (EPR) in 1935 is essentially a demonstration that the results of quantum mechanics are logically inconsistent with the premise that a measurement made with one instrument cannot influence the measurement made by another instrument if the measurement events are separated by a spacelike interval. 'This is sometimes called the locality premise.In 1964 it was demonstrated by Bell' in analyzing a Gedankenexperiment suggested by Bohm and Aharonov4 that locality implied inequalities in the measured probabilities of spin orientation experiments on certain physical systems. Recently, it has been shown that these Bell inequalities lead to experimental predictions which differ markedly from those of quantum mechanics. " Thus it has become feasible to confront these two divergent views of reality, quantum mechanics and the EPR locality premise, with experimental tests. ' A number of such experimental tests have now been performed, "' " and the most reasonable interpretation of the experimental results is that the quantum-mechanical predictions have been conformed. ""The implication of these experimental results is that, although the EPR locality premise seems eminently reasonable, it must be wrong. However, the locality premise is not easily relinquished, for if one measurement can alter the result of another measurement across a spacelike interval, then a suitable choice of inertial reference frames can make the "effect,", i.e. , the altered measurement, precede in time sequence the "cause, " i.e. , the altering measurement, in violation of the principle of causality. Clearly then, these experimental tests, while confirming the validity of quantum mechanics, have not clarified the EPR paradox, nor do they provide us with any new insights as to how the premise of locality {or causality) could be violated in quantummechanical systems. It is the purpose of this paper to attempt to clarify this situation. II. ADVANCED AND RETARDED ELECTROMAGNETIC WAVES B,(x, t) =5, sin[2m(x/x+ ft)],where X and f are the wavelength and frequency of the wave and the alternating signs in Eqs.(2) and (3) represent the two independent time solutions mentioned above. If the source of this radiation is considered to be at the origin and emitting in the +x direction, then these waves will exist only for x&0. W...

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Some evaluations of Bell's inequality for particles of arbitrary spin

Ögren

1983

Phys. Rev. D

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Use of inequalities for the experimental test of a general conception of the foundations of microphysics. II

Cited by 6 publications

References 9 publications

Is the life-world reduction sufficient in quantum physics?

Is the life-world reduction sufficient in quantum physics?

Generalized absorber theory and the Einstein-Podolsky-Rosen paradox

Some evaluations of Bell's inequality for particles of arbitrary spin

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