Results for ' Bell, and violations of Bell's inequality for experiments ‐ at space‐like separation'

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  1.  5
    New Discoveries and Deeper Insights: The View from 2010.Tim Maudlin - 2002-01-01 - In Quantum Non‐Locality and Relativity. Tim Maudlin. pp. 224–259.
    This chapter contains sections titled: The GRW Theory Local Beables for GRW The Flash Ontology Relativistic Flashy GRW The Role of Local Beables The Logical Situation The Methodological Situation.
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  2.  58
    A stronger Bell argument for (some kind of) parameter dependence.Paul M. Näger - 2020 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 72:1-28.
    It is widely accepted that the violation of Bell inequalities excludes local theories of the quantum realm. This paper presents a stronger Bell argument which even forbids certain non-local theories. The conclusion of the stronger Bell argument presented here provably is the strongest possible consequence from the violation of Bell inequalities on a qualitative probabilistic level. Since among the excluded non-local theories are those whose only non-local probabilistic connection is a dependence between the space-like separated measurement outcomes of EPR/B (...), outcome dependence cannot be the crucial dependence for explaining a violation of Bell inequalities. Rather, the remaining non-local theories, which can violate Bell inequalities, are characterized by the fact that at least one of the measurement outcomes in some sense probabilistically depends both on its local as well as on its distant measurement setting. While this is not to say that what is usually called parameter dependence has to hold, some kind of dependence on the distant parameter cannot be avoided. Against the received view, established by Jarrett and Shimony, that on a probabilistic level quantum non-locality amounts to outcome dependence, this result confirms and makes precise Maudlin's claim that some kind of parameter dependence is required. (shrink)
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  3. Bell's inequalities and quantum non-separability.S. V. Bhave - 1991 - British Journal for the Philosophy of Science 42 (4):541-545.
    The separable hidden variables theory (Bhave [1986]) of Aspect's [1982] four single channel polarizers is developed further to consider possible modified Aspect's experiment with four double channel polarizers. It is shown that Aspect's commutator is not a truly stochastic commutator, and that until such a truly stochastic commutator is devised, experiments based on Bell's inequalities (like those of Aspect's) cannot be adequate experimental tests of quantum nonseparability.
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  4. Forms of quantum nonseparability and related philosophical consequences.Vassilios Karakostas - 2004 - Journal for General Philosophy of Science / Zeitschrift für Allgemeine Wissenschaftstheorie 35 (2):283 - 312.
    Standard quantum mechanics unquestionably violates the separability principle that classical physics (be it point-like analytic, statistical, or field-theoretic) accustomed us to consider as valid. In this paper, quantum nonseparability is viewed as a consequence of the Hilbert-space quantum mechanical formalism, avoiding thus any direct recourse to the ramifications of Kochen-Specker’s argument or Bell’s inequality. Depending on the mode of assignment of states to physical systems – unit state vectors versus non-idempotent density operators – we distinguish between strong/relational and weak/deconstructional (...)
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  5. Lessons of Bell's Theorem: Nonlocality, yes; Action at a distance, not necessarily.Wayne C. Myrvold - 2016 - In Mary Bell & Shan Gao (eds.), Quantum Nonlocality and Reality: 50 Years of Bell's Theorem. Cambridge University Press. pp. 238-260.
    Fifty years after the publication of Bell's theorem, there remains some controversy regarding what the theorem is telling us about quantum mechanics, and what the experimental violations of Bell inequalities are telling us about the world. This chapter represents my best attempt to be clear about what I think the lessons are. In brief: there is some sort of nonlocality inherent in any quantum theory, and, moreover, in any theory that reproduces, even approximately, the quantum probabilities for the (...)
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  6.  3
    The Light of Quantum Mechanics.D. Atkinson - 1998 - Dialectica 52 (2):103-126.
    Although classical probability theory, as it is encapsulated in the axioms of Kolmogorov and in his criterion for the independence of two events, can consistently be employed in quantum mechanics, this can only be accomplished at an exorbitant price. By considering first the classic two‐slit experiment, and then the passage of one photon through three polarizers, the applicability of Kolmogorov's last axiom is called into question, but the standard rebuff of the Copenhagen interpretation is shown to be adequate to this (...)
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  7.  30
    Spin and Wind Directions II: A Bell State Quantum Model.Tomas Veloz, Sandro Sozzo, Massimiliano Sassoli de Bianchi, Suzette Geriente, Lester Beltran, Jonito Aerts Arguëlles & Diederik Aerts - 2018 - Foundations of Science 23 (2):337-365.
    In the first half of this two-part article, we analyzed a cognitive psychology experiment where participants were asked to select pairs of directions that they considered to be the best example of Two Different Wind Directions, and showed that the data violate the CHSH version of Bell’s inequality, with same magnitude as in typical Bell-test experiments in physics. In this second part, we complete our analysis by presenting a symmetrized version of the experiment, still violating the CHSH (...) but now also obeying the marginal law, for which we provide a full quantum modeling in Hilbert space, using a singlet state and suitably chosen product measurements. We also address some of the criticisms that have been recently directed at experiments of this kind, according to which they would not highlight the presence of genuine forms of entanglement. We explain that these criticisms are based on a view of entanglement that is too restrictive, thus unable to capture all possible ways physical and conceptual entities can connect and form systems behaving as a whole. We also provide an example of a mechanical model showing that the violations of the marginal law and Bell inequalities are generally to be associated with different mechanisms. (shrink)
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  8.  56
    Spin and Wind Directions II: A Bell State Quantum Model.Diederik Aerts, Jonito Aerts Arguëlles, Lester Beltran, Suzette Geriente, Massimiliano Sassoli de Bianchi, Sandro Sozzo & Tomas Veloz - 2018 - Foundations of Science 23 (2):337-365.
    In the first half of this two-part article, we analyzed a cognitive psychology experiment where participants were asked to select pairs of directions that they considered to be the best example of Two Different Wind Directions, and showed that the data violate the CHSH version of Bell’s inequality, with same magnitude as in typical Bell-test experiments in physics. In this second part, we complete our analysis by presenting a symmetrized version of the experiment, still violating the CHSH (...) but now also obeying the marginal law, for which we provide a full quantum modeling in Hilbert space, using a singlet state and suitably chosen product measurements. We also address some of the criticisms that have been recently directed at experiments of this kind, according to which they would not highlight the presence of genuine forms of entanglement. We explain that these criticisms are based on a view of entanglement that is too restrictive, thus unable to capture all possible ways physical and conceptual entities can connect and form systems behaving as a whole. We also provide an example of a mechanical model showing that the violations of the marginal law and Bell inequalities are generally to be associated with different mechanisms. (shrink)
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  9.  28
    Against a Minimalist Reading of Bell's Theorem: Lessons from Fine.Thomas Müller & Tomasz Placek - 2001 - Synthese 128 (3):343-379.
    Since the validity of Bell's inequalities implies the existence of joint probabilities for non-commuting observables, there is no universal consensus as to what the violation of these inequalities signifies. While the majority view is that the violation teaches us an important lesson about the possibility of explanations, if not about metaphysical issues, there is also a minimalist position claiming that the violation is to be expected from simple facts about probability theory. This minimalist position is backed by theorems due (...)
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  10. The light of quantum mechanics.David Atkinson - 1998 - Dialectica 52 (2):103–126.
    It is argued that while classical probability theory, as it is encapsulated in the axioms of Kolmogorov and in his criterion for the independence of two events, can consistently be employed in quantum mechanics, this can only be accomplished at an exorbitant price. By considering rst the classic two-slit experiment, and then the passage of one photon through three polarizers, the applicability of Kolmogorov's last axiom is called into question, but the standard rebu of the Copenhagen interpretation is shown to (...)
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  11. Stochastic outcomes in branching space-time: Analysis of bell's theorem.Tomasz Placek - 2000 - British Journal for the Philosophy of Science 51 (3):445-475.
    The paper extends the framework of outcomes in branching space-time (Kowalski and Placek [1999]) by assigning probabilities to outcomes of events, where these probabilities are interpreted either epistemically or as weighted possibilities. In resulting models I define the notion of common cause of correlated outcomes of a single event, and investigate which setups allow for the introduction of common causes. It turns out that a deterministic common cause can always be introduced, but (surprisingly) only special setups permit the introduction of (...)
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  12. Separate- versus common -common-cause-type derivations of the bell inequalities.Gábor Hofer-Szabó - 2008 - Synthese 163 (2):199 - 215.
    Standard derivations of the Bell inequalities assume a common common cause system that is a common screener-off for all correlations and some additional assumptions concerning locality and no-conspiracy. In a recent paper (Grasshoff et al., 2005) Bell inequalities have been derived via separate common causes assuming perfect correlations between the events. In the paper it will be shown that the assumptions of this separate-common-cause-type derivation of the Bell inequalities in the case of perfect correlations can be reduced to the assumptions (...)
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  13. Against a minimalist reading of bell's theorem: Lessons from fine.Thomas Müller & Tomasz Placek - 2001 - Synthese 128 (3):343 - 379.
    Since the validity of Bell's inequalities implies the existence of joint probabilities for non-commuting observables, there is no universal consensus as to what the violation of these inequalities signifies. While the majority view is that the violation teaches us an important lesson about the possibility of explanations, if not about metaphysical issues, there is also a minimalist position claiming that the violation is to be expected from simple facts about probability theory. This minimalist position is backed by theorems due (...)
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  14.  34
    An Ontology of Nature with Local Causality, Parallel Lives, and Many Relative Worlds.Mordecai Waegell - 2018 - Foundations of Physics 48 (12):1698-1730.
    Parallel lives is an ontological model of nature in which quantum mechanics and special relativity are unified in a single universe with a single space-time. Point-like objects called lives are the only fundamental objects in this space-time, and they propagate at or below c, and interact with one another only locally at point-like events in space-time, very much like classical point particles. Lives are not alive in any sense, nor do they possess consciousness or any agency to make decisions—they are (...)
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  15.  5
    Some derivations of bell’s inequality.Kaj Børge Hansen - 1994 - Danish Yearbook of Philosophy 29 (1):63-105.
    Eight derivations of Bell’s inequality are given. First a simple and concrete derivation is given drawing on the full strength of the two hypotheses of locality and hidden variables. Two attempts at deriving Bell’s inequality without locality are made. They fail, but give valuable insight into the form which nonlocality must take in quantum physics. Arguments are given against this form of nonlocality. Ontological ideas which allow separation, realism, and locality in quantum mechanics are indicated. In the (...)
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  16.  33
    Stern–Gerlach, EPRB and Bell Inequalities: An Analysis Using the Quantum Hamilton Equations of Stochastic Mechanics.Wolfgang Paul & Michael Beyer - 2024 - Foundations of Physics 54 (2):1-25.
    The discussion of the recently derived quantum Hamilton equations for a spinning particle is extended to spin measurement in a Stern–Gerlach experiment. We show that this theory predicts a continuously changing orientation of the particles magnetic moment over the course of its motion across the Stern–Gerlach apparatus. The final measurement results agree with experiment and with predictions of the Pauli equation. Furthermore, the Einstein–Podolsky–Rosen–Bohm thought experiment is investigated, and the violation of Bells’s inequalities is reproduced within this stochastic mechanics approach. (...)
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  17.  57
    Minimal assumption derivation of a bell-type inequality.Gerd Graßhoff, Samuel Portmann & and Adrian Wüthrich - 2005 - British Journal for the Philosophy of Science 56 (4):663 - 680.
    Institute of Theoretical Physics, Exact Sciences Sidlerstrasse 5, University of Bern, CH-3012 Bern Switzerland portmann{at}itp.unibe.ch' + u + '@' + d + ''//--> awuethr{at}itp.unibe.ch' + u + '@' + d + ''//--> John Bell showed that a big class of local hidden-variable models stands in conflict with quantum mechanics and experiment. Recently, there were suggestions that empirically adequate hidden-variable models might exist which presuppose a weaker notion of local causality. We will show that a Bell-type inequality can be derived (...)
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  18. Quantum Reality, Relativistic Causality, and Closing the Epistemic Circle.Wayne C. Myrvold & Joy Christian (eds.) - 2009 - Springer.
    Part I Introduction -/- Passion at a Distance (Don Howard) -/- Part II Philosophy, Methodology and History -/- Balancing Necessity and Fallibilism: Charles Sanders Peirce on the Status of Mathematics and its Intersection with the Inquiry into Nature (Ronald Anderson) -/- Newton’s Methodology (William Harper) -/- Whitehead’s Philosophy and Quantum Mechanics (QM): A Tribute to Abner Shimony (Shimon Malin) -/- Bohr and the Photon (John Stachel) -/- Part III Bell’s Theorem and Nonlocality A. Theory -/- Extending the Concept of an (...)
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  19. The philosophical implications of the loophole-free violation of Bell’s inequality: Quantum entanglement, timelessness, triple-aspect monism, mathematical Platonism and scientific morality.Gilbert B. Côté - manuscript
    The demonstration of a loophole-free violation of Bell's inequality by Hensen et al. (2015) leads to the inescapable conclusion that timelessness and abstractness exist alongside space-time. This finding is in full agreement with the triple-aspect monism of reality, with mathematical Platonism, free will and the eventual emergence of a scientific morality.
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  20. George Boole's 'conditions of possible experience' and the quantum puzzle.Itamar Pitowsky - 1994 - British Journal for the Philosophy of Science 45 (1):95-125.
    In the mid-nineteenth century George Boole formulated his ‘conditions of possible experience’. These are equations and ineqaulities that the relative frequencies of events must satisfy. Some of Boole's conditions have been rediscovered in more recent years by physicists, including Bell inequalities, Clauser Horne inequalities, and many others. In this paper, the nature of Boole's conditions and their relation to propositional logic is explained, and the puzzle associated with their violation by quantum frequencies is investigated in relation to a variety of (...)
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  21.  84
    Zeno's arrow, Newton's mechanics, and bell's inequalities.Leonard Angel - 2002 - British Journal for the Philosophy of Science 53 (2):161-182.
    A model of a new version of Zeno's arrow paradox is presented in a plausible extension of Newtonian collision mechanics. In exploring various avenues for resolution of the paradox, it becomes evident that a prerelativistic classical physical topology which is locally deterministic can mechanically generate nonclassical ontological properties such as the appearance of a particle in many places at once. It can also mimic some properties of quantum physics, including unprepared spatially-separated correlations. 1 Zeno's arrow paradox 2 Newtonian collision mechanics (...)
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  22.  38
    Quantum Locality, Rings a Bell?: Bell’s Inequality Meets Local Reality and True Determinism.Natalia Sánchez-Kuntz & Eduardo Nahmad-Achar - 2018 - Foundations of Physics 48 (1):27-47.
    By assuming a deterministic evolution of quantum systems and taking realism into account, we carefully build a hidden variable theory for Quantum Mechanics based on the notion of ontological states proposed by ’t Hooft. We view these ontological states as the ones embedded with realism and compare them to the quantum states that represent superpositions, viewing the latter as mere information of the system they describe. Such a deterministic model puts forward conditions for the applicability of Bell’s inequality: the (...)
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  23.  85
    A local realistic explanation of EPR correlations.M. Hoffmann - 1990 - Foundations of Physics 20 (8):991-1003.
    The reality of physical properties is divided into two types: “relatively” and “absolutely” real. Concerning the reality of spatial observables, it is proposed to drop the concept of an absolute reality of spatial observables. The resulting relative reality then isnot the observer-dependent reality of the standard interpretation of quantum mechanics, but rather the reference frame-dependent reality implied by the principle of relativity. Within the frame of this relative reality, it is then shown that a local explanation for the existence of (...)
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  24.  84
    On propensity-frequentist models for stochastic phenomena; with applications to bell's theorem.Tomasz Placek - unknown
    The paper develops models of statistical experiments that combine propensities with frequencies, the underlying theory being the branching space-times (BST) of Belnap (1992). The models are then applied to analyze Bell's theorem. We prove the so-called Bell-CH inequality via the assumptions of a BST version of Outcome Independence and of (non-probabilistic) No Conspiracy. Notably, neither the condition of probabilistic No Conspiracy nor the condition of Parameter Independence is needed in the proof. As the Bell-CH inequality is (...)
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  25.  36
    Separate- versus common-common-cause-type derivations of the Bell inequalities.Gábor Hofer-Szabó - 2008 - Synthese 163 (2):199-215.
    Standard derivations of the Bell inequalities assume a common-commoncause-system that is a common screener-off for all correlations and some additional assumptions concerning locality and no-conspiracy. In a recent paper Graßhoff et al., "The British Journal for the Philosophy of Science", 56, 663–680 ) Bell inequalities have been derived via separate common causes assuming perfect correlations between the events. In the paper it will be shown that the assumptions of this separate-common-cause-type derivation of the Bell inequalities in the case of perfect (...)
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  26.  66
    Explicit examples of theories satisfying Bell's inequalities: Do they miss their goal prior to contradicting experiments[REVIEW]S. Bergia, F. Cannata & V. Monzoni - 1985 - Foundations of Physics 15 (2):145-154.
    We show that a local theory conforming to the requirement of reducing to usual quantum mechanics for single-particle states and describing two-particle correlations in terms of mixtures violates the condition of perfect anticorrelation between spin components in the case of Bohm's version of EPR.
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  27. Burqas in Back Alleys: Street Art, hijab, and the Reterritorialization of Public Space.John A. Sweeney - 2011 - Continent 1 (4):253-278.
    continent. 1.4 (2011): 253—278. A Sense of French Politics Politics itself is not the exercise of power or struggle for power. Politics is first of all the configuration of a space as political, the framing of a specific sphere of experience, the setting of objects posed as "common" and of subjects to whom the capacity is recognized to designate these objects and discuss about them.(1) On April 14, 2011, France implemented its controversial ban of the niqab and burqa , commonly (...)
     
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  28.  32
    Unconditional Quantum Correlations do not Violate Bell’s Inequality.Andrei Khrennikov - 2015 - Foundations of Physics 45 (10):1179-1189.
    In this paper I demonstrate that the quantum correlations of polarization observables used in Bell’s argument against local realism have to be interpreted as conditional quantum correlations. By taking into account additional sources of randomness in Bell’s type experiments, i.e., supplementary to source randomness, I calculate the complete quantum correlations. The main message of the quantum theory of measurement is that complete correlations can be essentially smaller than the conditional ones. Additional sources of randomness diminish correlations. One can say (...)
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  29. Quantum Life: Interaction, Entanglement, and Separation.Eric Winsberg - 2003 - Journal of Philosophy 100 (2):80 - 97.
    Violations of the Bell inequalities in EPR-Bohm type experiments have set the literature on the metaphysics of microscopic systems to flirting with some sort of metaphysical holism regarding spatially separated, entangled systems. The rationale for this behavior comes in two parts. The first part relies on the proof, due to Jon Jarrett [2] that the experimentally observed violations of the Bell inequalities entail violations of the conjunction of two probabilistic constraints. Jarrett called these two constraints locality (...)
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  30. Bell's theorem, nonseparability, and spacetime individuation in quantum mechanics.Darrin W. Belousek - 1999 - Philosophy of Science 66 (3):46.
    We first examine Howard's analysis of the Bell factorizability condition in terms of 'separability' and 'locality' and then consider his claims that the violations of Bell's inequality by the statistical predictions of quantum mechanics should be interpreted in terms of 'nonseparability' rather than 'nonlocality' and that 'nonseparability' implies the failure of spacetime as a principle of individuation for quantum-mechanical systems. We will argue that his argument for the first claim is less than compelling and that any argument (...)
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  31.  7
    On the Representations of Bell’s Operators in Quantum Mechanics.S. P. Sorella - 2023 - Foundations of Physics 53 (3):1-12.
    We point out that, when the dimension of the Hilbert space is greater than two, Bell’s operators entering the Bell-CHSH inequality do exhibit inequivalent unitary matrix representations. Although the Bell-CHSH inequality turns out to be violated, the size of the violation is different for different representations, the maximum violation being given by Tsirelson’s bound. The feature relies on a pairing mechanism between the modes of the Hilbert space of the system.
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  32. About a Generalization of Bell's Inequality.V. M. González-Robles - 2003 - Foundations of Physics 33 (5):839-853.
    We make use of natural induction to propose, following John Ju Sakurai, a generalization of Bell's inequality for two spin s=n/2(n=1,2,...) particle systems in a singlet state. We have found that for any finite integer or half-integer spin Bell's inequality is violated when the terms in the inequality are calculated from a quantum mechanical point of view. In the final expression for this inequality the two members therein are expressed in terms of a single (...)
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  33.  27
    Restoring Local Causality and Objective Reality to the Entangled Photons.Joy Christian - unknown
    Unlike our basic theories of space and time, quantum mechanics is not a locally causal theory. This well known fact was brought forth by Einstein, Podolsky, and Rosen in 1935. Today it is widely believed that any hopes of restoring local causality within a realistic theory have been undermined by Bell's theorem and its supporting experiments. By contrast, we provide a strictly local, deterministic, and realistic explanation for the correlations observed in two such supporting experiments performed at (...)
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  34. Locality and Bell's Theorem.W. De Baere, A. Mann & M. Revzen - 1999 - Foundations of Physics 29 (1):67-77.
    It is shown that the violation of Bell's inequality allowed by quantum mechanics and the related Bell's theorem without inequalities is accounted for by local commutations of operators representing single-particle observables. It is argued that the idea of nonlocal influencing of one particle on another when they are in spacelike separated regions clearly has neither empirical nor theoretical support.
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  35. The Poetry of Alessandro De Francesco.Belle Cushing - 2011 - Continent 1 (4):286-310.
    continent. 1.4 (2011): 286—310. This mad play of writing —Stéphane Mallarmé Somewhere in between mathematics and theory, light and dark, physicality and projection, oscillates the poetry of Alessandro De Francesco. The texts hold no periods or commas, not even a capital letter for reference. Each piece stands as an individual construction, and yet the poetry flows in and out of the frame. Images resurface from one poem to the next, haunting the reader with reincarnations of an object lost in the (...)
     
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  36.  99
    A Whiteheadian approach to Bell's correlations.Shimon Malin - 1988 - Foundations of Physics 18 (10):1035-1044.
    Certain properties of the Bell-type correlations and, in particular, the impossibility of using them to transmit signals faster than light, are investigated from the point of view of the conceptual structure of quantum mechanics and of Whitehead's process philosophy. The collapses of quantum states are shown to correspond to perspectives of different frames of reference on a Whiteheadian process of self-creation of actual entities. The analysis suggests a fundamental limitation on the capacity to describe the propagation of influences among the (...)
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  37.  64
    Bell's Inequality, Information Transmission, and Prism Models.Tim Maudlin - 1992 - PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1992:404 - 417.
    Violations of Bell's Inequality can only be reliably produced if some information about the apparatus setting on one wing is available on the other, requiring superluminal information transmission. In this paper I inquire into the minimum amount of information needed to generate quantum statistics for correlated photons. Reflection on informational constraints clarifies the significance of Fine's Prism models, and allows the construction of several models more powerful than Fine's. These models are more efficient than Fine claims to (...)
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  38. Bell's inequality for a single particle.M. Revzen & A. Mann - 1996 - Foundations of Physics 26 (6):847-850.
    Bell's inequality must be satisfied by a theory that can be based on local realistic variables. We derive such an inequality and show that it is violated by some quantum mechanical states. These states may be looked upon as pertaining to one particle.
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  39. Bell's inequalities, relativistic quantum field theory and the problem of hidden variables.Miklós Rédei - 1991 - Philosophy of Science 58 (4):628-638.
    Based partly on proving that algebraic relativistic quantum field theory (ARQFT) is a stochastic Einstein local (SEL) theory in the sense of SEL which was introduced by Hellman (1982b) and which is adapted in this paper to ARQFT, the recently proved maximal and typical violation of Bell's inequalities in ARQFT (Summers and Werner 1987a-c) is interpreted in this paper as showing that Bell's inequalities are, in a sense, irrelevant for the problem of Einstein local stochastic hidden variables, especially (...)
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  40. “Local Realism”, Bell’s Theorem and Quantum “Locally Realistic” Inequalities.Elena R. Loubenets - 2005 - Foundations of Physics 35 (12):2051-2072.
    Based on the new general framework for the probabilistic description of experiments, introduced in [E.R. Loubenets, Research Report No 8, MaPhySto, University of Aarhus, Denmark (2003); Proceedings Conference “Quantum Theory, Reconsideration of Foundations”, Ser. Math. Modeling, Vol. 10 (University Press, Vaxjo, 2004), pp. 365–385], we analyze in mathematical terms the link between the validity of Bell-type inequalities under joint experiments upon a system of any type and the physical concept of “local realism”. We prove that the violation of (...)
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  41.  12
    Negotiating Maternal Identity: Adrienne Rich’s Legacy for Inquiry into the Political-Philosophical Dimensions of Pregnancy and Childbirth.Candace Johnson - 2014 - philoSOPHIA: A Journal of Continental Feminism 4 (1):65-87.
    In lieu of an abstract, here is a brief excerpt of the content:Negotiating Maternal IdentityAdrienne Rich’s Legacy for Inquiry into the Political-Philosophical Dimensions of Pregnancy and ChildbirthCandace JohnsonGiving birth has been described as the crossing of an imaginary threshold, which separates an independent maternal self from some sort of dual or subordinate existence. The metaphor of a border has also been employed to demonstrate this transformation, which may be liberating, oppressive, or some complex combination thereof (Weir 2006; Martinez 2004). What (...)
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  42. The Violation of Bell Inequalities in the Macroworld.Diederik Aerts, Sven Aerts, Jan Broekaert & Liane Gabora - 2000 - Foundations of Physics 30 (9):1387-1414.
    We show that Bell inequalities can be violated in the macroscopic world. The macroworld violation is illustrated using an example involving connected vessels of water. We show that whether the violation of inequalities occurs in the microworld or the macroworld, it is the identification of nonidentical events that plays a crucial role. Specifically, we prove that if nonidentical events are consistently differentiated, Bell-type Pitowsky inequalities are no longer violated, even for Bohm's example of two entangled spin 1/2 quantum particles. We (...)
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  43.  12
    Hidden Variables and Bell’s Theorem: Local or Not?Valia Allori - 2024 - Theoria. An International Journal for Theory, History and Foundations of Science.
    Bell’s inequality is an empirical constrain on theories with hidden variables, which EPR argued are needed to explain observed perfect correlations if keeping locality. One way to deal with the empirical violation of Bell’s inequality is by openly embracing nonlocality, in a theory like the pilot-wave theory. Nonetheless, recent proposals have revived the possibility that one can avoid nonlocality by resorting to superdeterministic theories. These are local hidden variables theories which violate statistical independence which is one assumption of (...)
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  44.  44
    Minimal Assumption Derivation of a Bell-type Inequality.G. Grasshoff - 2005 - British Journal for the Philosophy of Science 56 (4):663-680.
    John Bell showed that a big class of local hidden-variable models stands in conflict with quantum mechanics and experiment. Recently, there were suggestions that empirically adequate hidden-variable models might exist which presuppose a weaker notion of local causality. We will show that a Bell-type inequality can be derived also from these weaker assumptions. IntroductionThe EPR-Bohm experimentLocal causalityBell's inequality from separate common causes4.1 A weak screening-off principle4.2 Perfect correlation and ‘determinism’4.3 A minimal theory for spins4.4 No conspiracyDiscussion.
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  45.  40
    Quantum Team Logic and Bell’s Inequalities.Tapani Hyttinen, Gianluca Paolini & Jouko Väänänen - 2015 - Review of Symbolic Logic 8 (4):722-742.
    A logical approach to Bell's Inequalities of quantum mechanics has been introduced by Abramsky and Hardy [2]. We point out that the logical Bell's Inequalities of [2] are provable in the probability logic of Fagin, Halpern and Megiddo [4]. Since it is now considered empirically established that quantum mechanics violates Bell's Inequalities, we introduce a modified probability logic, that we call quantum team logic, in which Bell's Inequalities are not provable, and prove a Completeness Theorem for (...)
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  46.  89
    The problems in quantum foundations in the light of gauge theories.Yuval Ne'eman - 1986 - Foundations of Physics 16 (4):361-377.
    We review the issues of nonseparability and seemingly acausal propagation of information in EPR, as displayed by experiments and the failure of Bell's inequalities. We show that global effects are in the very nature of the geometric structure of modern physical theories, occurring even at the classical level. The Aharonov-Bohm effect, magnetic monopoles, instantons, etc. result from the topology and homotopy features of the fiber bundle manifolds of gauge theories. The conservation of probabilities, a supposedly highly quantum effect, (...)
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  47. Mad Speculation and Absolute Inhumanism: Lovecraft, Ligotti, and the Weirding of Philosophy.Ben Woodard - 2011 - Continent 1 (1):3-13.
    continent. 1.1 : 3-13. / 0/ – Introduction I want to propose, as a trajectory into the philosophically weird, an absurd theoretical claim and pursue it, or perhaps more accurately, construct it as I point to it, collecting the ground work behind me like the Perpetual Train from China Mieville's Iron Council which puts down track as it moves reclaiming it along the way. The strange trajectory is the following: Kant's critical philosophy and much of continental philosophy which has followed, (...)
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  48. Entanglement and Quantum Superposition of a Macroscopic-Macroscopic system.Francesco De Martini - 2011 - Foundations of Physics 41 (3):363-370.
    Two quantum Macro-states and their Macroscopic Quantum Superpositions (MQS) localized in two far apart, space-like separated sites can be non-locally correlated by any entangled couple of single-particles having interacted in the past. This novel “Macro-Macro” paradigm is investigated on the basis of a recent study on an entangled Micro-Macro system involving N≈105 particles. Crucial experimental issues as the violation of Bell’s inequalities by the Macro-Macro system are considered.
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    The Bell Experiment and the Limitations of Actors.Inge S. Helland - 2022 - Foundations of Physics 52 (3):1-22.
    The well known Bell experiment with two actors Alice and Bob is considered. First the simple deduction leading to the CHSH inequality under local realism is reviewed, and some arguments from the literature are recapitulated. Then I take up certain background themes before I enter a discussion of Alice’s analysis of the situation. An important point is that her mind is limited by the fact that her Hilbert space in this context is two-dimensional. General statements about a mind’s limitation (...)
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  50.  81
    An exchange on local beables.John S. Bell, J. Clauser, M. Horne & A. Shimony - 1985 - Dialectica 39 (2):85-96.
    Summarya) Bell tries to formulate more explicitly a notion of “local causality”: correlations between physical events in different space‐time regions should be explicable in terms of physical events in the overlap of the backward light cones. It is shown that ordinary relativistic quantum field theory is not locally causal in this sense, and cannot be embedded in a locally causal theory.b) Clauser, Home and Shimony criticize several steps in Bell's argument that any theory of local “beables” is incompatible with (...)
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