Search results for 'Collapse version of quantum theory' (try it on Scholar)

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  1. Nicholas Maxwell (1982). Instead of Particles and Fields: A Micro Realistic Quantum "Smearon" Theory. [REVIEW] Foundatioins of Physics 12 (6):607-631.score: 1452.0
    A fully micro realistic, propensity version of quantum theory is proposed, according to which fundamental physical entities - neither particles nor fields - have physical characteristics which determine probabilistically how they interact with one another (rather than with measuring instruments). The version of quantum "smearon" theory proposed here does not modify the equations of orthodox quantum theory: rather, it gives a radically new interpretation to these equations. It is argued that (i) there (...)
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  2. Nicholas Maxwell (1988). Quantum Propensiton Theory: A Testable Resolution of the Wave/Particle Dilemma. British Journal for the Philosophy of Science 39 (1):1-50.score: 1446.0
    In this paper I put forward a new micro realistic, fundamentally probabilistic, propensiton version of quantum theory. According to this theory, the entities of the quantum domain - electrons, photons, atoms - are neither particles nor fields, but a new kind of fundamentally probabilistic entity, the propensiton - entities which interact with one another probabilistically. This version of quantum theory leaves the Schroedinger equation unchanged, but reinterprets it to specify how propensitons evolve (...)
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  3. Shan Gao (2008). A Quantum Theory of Consciousness. Minds and Machines 18 (1):39-52.score: 919.2
    The relationship between quantum collapse and consciousness is reconsidered under the assumption that quantum collapse is an objective dynamical process. We argue that the conscious observer can have a distinct role from the physical measuring device during the process of quantum collapse owing to the intrinsic nature of consciousness; the conscious observer can know whether he is in a definite state or a quantum superposition of definite states, while the physical measuring device cannot (...)
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  4. Nicholas Maxwell (1976). Towards a Micro Realistic Version of Quantum Mechanics, Part I. Foundations of Physics 6 (3):275-292.score: 787.2
    This paper investigates the possibiity of developing a fully micro realistic version of elementary quantum mechanics. I argue that it is highly desirable to develop such a version of quantum mechanics, and that the failure of all current versions and interpretations of quantum mechanics to constitute micro realistic theories is at the root of many of the interpretative problems associated with quantum mechanics, in particular the problem of measurement. I put forward a propensity micro (...)
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  5. Milan M. Ćirković (2005). Physics Versus Semantics: A Puzzling Case of the Missing Quantum Theory. [REVIEW] Foundations of Physics 35 (5):817-838.score: 763.2
    A case for the project of excising of confusion and obfuscation in the contemporary quantum theory initiated and promoted by David Deutsch has been made. It has been argued that at least some theoretical entities which are conventionally labelled as “interpretations” of quantum mechanics are in fact full-blooded physical theories in their own right, and as such are falsifiable, at least in principle. The most pertinent case is the one of the so-called “Many-Worlds Interpretation” (MWI) of Everett (...)
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  6. Nicholas Maxwell (1993). Beyond Fapp: Three Approaches to Improving Orthodox Quantum Theory and An Experimental Test. In F. Selleri and G. Tarozzi van der Merwe, F. Selleri & G. Tarozzi (eds.), Bell's Theorem and the Foundations of Modern Physics. World Scientific.score: 747.0
    Because it fails to solve the wave-particle problem, orthodox quantum theory is obliged to be about observables and not quantum beables. As a result the theory is imprecise, ambiguous, ad hoc, lacking in explanatory power, restricted in scope and resistant to unification. A new version of quantum theory is needed that is about quantum beables.
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  7. Nicholas Maxwell (1995). A Philosopher Struggles to Understand Quantum Theory: Particle Creation and Wavepacket Reduction. In M. Ferrero & A. van der Merwe (eds.), Fundamental Problems in Quantum Physics.score: 735.0
    Work on the central problems of the philosophy of science has led the author to attempt to create an intelligible version of quantum theory. The basic idea is that probabilistic transitions occur when new stationary or particle states arise as a result of inelastic collisions.
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  8. Dick J. Hoekzema (1992). Quantum Event Theory: A Tetrode-Fokker Version of Quantum Field Theory. [REVIEW] Foundations of Physics 22 (4):487-506.score: 722.4
    This paper explores the possibility of an event interpretation of quantum field theory.
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  9. Alexander Wilce (2010). Formalism and Interpretation in Quantum Theory. Foundations of Physics 40 (4):434-462.score: 657.0
    Quantum Mechanics can be viewed as a linear dynamical theory having a familiar mathematical framework but a mysterious probabilistic interpretation, or as a probabilistic theory having a familiar interpretation but a mysterious formal framework. These points of view are usually taken to be somewhat in tension with one another. The first has generated a vast literature aiming at a “realistic” and “collapse-free” interpretation of quantum mechanics that will account for its statistical predictions. The second has (...)
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  10. K. Lewin (2009). The Wave Function Collapse as an Effect of Field Quantization. Foundations of Physics 39 (10):1145-1160.score: 606.0
    It is pointed out that ordinary quantum mechanics as a classical field theory cannot account for the wave function collapse if it is not seen within the framework of field quantization. That is needed to understand the particle structure of matter during wave function evolution and to explain the collapse as symmetry breakdown by detection. The decay of a two-particle bound s state and the Stern-Gerlach experiment serve as examples. The absence of the nonlocality problem in (...)
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  11. David Albert & Barry Loewer (1989). Symposiums Papers: Two No-Collapse Interpretations of Quantum Theory. Noûs 23 (2):169-186.score: 604.8
  12. Hans Halvorson & Rob Clifton (1999). Maximal Beable Subalgebras of Quantum-Mechanical Observables. International Journal of Theoretical Physics 38:2441-2484.score: 597.0
    The centerpiece of Jeffrey Bub's book Interpreting the Quantum World is a theorem (Bub and Clifton 1996) which correlates each member of a large class of no-collapse interpretations with some 'privileged observable'. In particular, the Bub-Clifton theorem determines the unique maximal sublattice L(R,e) of propositions such that (a) elements of L(R,e) can be simultaneously determinate in state e, (b) L(R,e) contains the spectral projections of the privileged observable R, and (c) L(R,e) is picked out by R and e (...)
     
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  13. Joseph Berkovitz & Meir Hemmo (2005). Modal Interpretations of Quantum Mechanics and Relativity: A Reconsideration. [REVIEW] Foundations of Physics 35 (3):373-397.score: 594.0
    Two of the main interpretative problems in quantum mechanics are the so-called measurement problem and the question of the compatibility of quantum mechanics with relativity theory. Modal interpretations of quantum mechanics were designed to solve both of these problems. They are no-collapse (typically) indeterministic interpretations of quantum mechanics that supplement the orthodox state description of physical systems by a set of possessed properties that is supposed to be rich enough to account for the classical-like (...)
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  14. Jeremy Butterfield (2001). Some Worlds of Quantum Theory. In R. J. Russell, N. Murphy & C. J. Isham (eds.), Quantum Physics and Divine Action. Vatican Observatory Publications. 111--140.score: 554.4
    Abstract: This paper assesses the Everettian approach to the measurement problem, especially the version of that approach advocated by Simon Saunders and David Wallace. I emphasise conceptual, indeed metaphysical, aspects rather than technical ones; but I include an introductory exposition of decoherence. In particular, I discuss whether---as these authors maintain---it is acceptable to have no precise definition of 'branch' (in the Everettian kind of sense). (A version of this paper will appear in a CTNS/Vatican Observatory volume on (...) Theory and Divine Action, ed. Robert Russell et al.). (shrink)
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  15. Mark P. Silverman (2007). Condensates in the Cosmos: Quantum Stabilization of the Collapse of Relativistic Degenerate Stars to Black Holes. [REVIEW] Foundations of Physics 37 (4-5):632-669.score: 552.0
    According to prevailing theory, relativistic degenerate stars with masses beyond the Chandrasekhar and Oppenheimer–Volkoff (OV) limits cannot achieve hydrostatic equilibrium through either electron or neutron degeneracy pressure and must collapse to form stellar black holes. In such end states, all matter and energy within the Schwarzschild horizon descend into a central singularity. Avoidance of this fate is a hoped-for outcome of the quantization of gravity, an as-yet incomplete undertaking. Recent studies, however, suggest the possibility that known quantum (...)
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  16. Matthew Donald, Realism, the Interpretation of Quantum Theory, and Idealism.score: 544.8
    Confused ideas about the weirdness of quantum mechanics have sometimes been blamed for the spread of anti-realist positions in philosophy. In this seminar, I shall re-examine the relation between realism and quantum theory. My goal is to argue that one can remain a realist in a reasonably familiar sense, while adopting a theory which amounts to a form of idealism. After sketching the abstract mathematical structure of quantum theory, I will introduce realism and consider (...)
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  17. Jeffrey A. Barrett (1994). The Suggestive Properties of Quantum Mechanics Without the Collapse Postulate. Erkenntnis 41 (2):233 - 252.score: 537.6
    Everett proposed resolving the quantum measurement problem by dropping the nonlinear collapse dynamics from quantum mechanics and taking what is left as a complete physical theory. If one takes such a proposal seriously, then the question becomes how much of the predictive and explanatory power of the standard theory can one recover without the collapse postulate and without adding anything else. Quantum mechanics without the collapse postulate has several suggestive properties, which we (...)
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  18. Eric G. Cavalcanti (2010). Causation, Decision Theory, and Bell's Theorem: A Quantum Analogue of the Newcomb Problem. British Journal for the Philosophy of Science 61 (3):569-597.score: 535.2
    I apply some of the lessons from quantum theory, in particular from Bell’s theorem, to a debate on the foundations of decision theory and causation. By tracing a formal analogy between the basic assumptions of causal decision theory (CDT)—which was developed partly in response to Newcomb’s problem— and those of a local hidden variable theory in the context of quantum mechanics, I show that an agent who acts according to CDT and gives any nonzero (...)
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  19. Manfred Neumann (1978). A Probabilistic Analysis of the Difficulties of Unifying Quantum Mechanics with the Theory of Relativity. Foundations of Physics 8 (9-10):721-733.score: 535.2
    A procedure is given for the transformation of quantum mechanical operator equations into stochastic equations. The stochastic equations reveal a simple correlation between quantum mechanics and classical mechanics: Quantum mechanics operates with “optimal estimations,” classical mechanics is the limit of “complete information.” In this connection, Schrödinger's substitution relationsp x → -iħ ∂/∂x, etc, reveal themselves as exact mathematical transformation formulas. The stochastic version of quantum mechanical equations provides an explanation for the difficulties in correlating (...) mechanics and the theory of relativity: In physics “time” is always thought of as a numerical parameter; but in the present formalism of physics “time” is described by two formally totally different quantities. One of these two “times” is a numerical parameter and the other a random variable. This last concept of time shows all the properties required by the theory of relativity and is therefore to be considered as the relativistic time. (shrink)
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  20. Nicholas Maxwell (1976). Towards a Micro Realistic Version of Quantum Mechanics, Part II. Foundations of Physics 6 (6):661-676.score: 527.4
    In this paper, possible objections to the propensity microrealistic version of quantum mechanics proposed in Part I are answered. This version of quantum mechanics is compared with the statistical, particle microrealistic viewpoint, and a crucial experiment is proposed designed to distinguish between these to microrealistic versions of quantum mechanics.
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  21. Adrian Kent (2012). Real World Interpretations of Quantum Theory. Foundations of Physics 42 (3):421-435.score: 525.6
    I propose a new class of interpretations, real world interpretations, of the quantum theory of closed systems. These interpretations postulate a preferred factorization of Hilbert space and preferred projective measurements on one factor. They give a mathematical characterisation of the different possible worlds arising in an evolving closed quantum system, in which each possible world corresponds to a (generally mixed) evolving quantum state. In a realistic model, the states corresponding to different worlds should be expected to (...)
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  22. Henry P. Stapp (2009). Quantum Collapse and the Emergence of Actuality From Potentiality. Process Studies 38 (2):319-339.score: 520.8
    Orthodox quantum mechanics is built upon psychophysical collapse events that are the close analogs, within contemporary physical theory, of the the Whiteheadian actual occasions, with their mental and physical poles. This article describes the way in which these events enter into quantum theory, and mediate the emergence of actuality from potentiality.
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  23. Jeffrey A. Barrett, On the Nature of Measurement Records in Relativistic Quantum Field Theory.score: 520.8
    A resolution of the quantum measurement problem would require one to explain how it is that we end up with determinate records at the end of our measurements. Metaphysical commitments typically do real work in such an explanation. Indeed, one should not be satisfied with one's metaphysical commitments unless one can provide some account of determinate measurement records. I will explain some of the problems in getting determinate records in relativistic quantum field theory and pay particular attention (...)
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  24. Anja Matschuck (2011). Non-Local Correlations in Therapeutic Settings? A Qualitative Study on the Basis of Weak Quantum Theory and the Model of Pragmatic Information. Axiomathes 21 (2):249-261.score: 507.6
    Weak Quantum Theory (WQT) and the Model of Pragmatic Information (MPI) are two psychophysical concepts developed on the basis of quantum physics. The present study contributes to their empirical examination. The issue of the study is whether WQT and MPI can not only explain ‘psi’-phenomena theoretically but also prove to be consistent with the empirical phenomenology of extrasensory perception (ESP). From the main statements of both models, 33 deductions for psychic readings are derived. Psychic readings are defined (...)
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  25. Peter J. Lewis (2003). Four Strategies for Dealing with the Counting Anomaly in Spontaneous Collapse Theories of Quantum Mechanics. International Studies in the Philosophy of Science 17 (2):137 – 142.score: 502.8
    A few years ago, I argued that according to spontaneous collapse theories of quantum mechanics, arithmetic applies to macroscopic objects only as an approximation. Several authors have written articles defending spontaneous collapse theories against this charge, including Bassi and Ghirardi, Clifton and Monton, and now Frigg. The arguments of these authors are all different and all ingenious, but in the end I think that none of them succeeds, for reasons I elaborate here. I suggest a fourth line (...)
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  26. Krzysztof Wójtowicz (2010). Theory of Quantum Computation and Philosophy of Mathematics. Part I. Logic and Logical Philosophy 18 (3-4):313-332.score: 500.4
    The aim of this paper is to present some basic notions of the theory of quantum computing and to compare them with the basic notions of the classical theory of computation. I am convinced, that the results of quantum computation theory (QCT) are not only interesting in themselves, but also should be taken into account in discussions concerning the nature of mathematical knowledge. The philosophical discussion will however be postponed to another paper. QCT seems not (...)
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  27. Nicholas Maxwell (1972). A New Look at the Quantum Mechanical Problem of Measurement. American Journal of Physics 40:1431-5..score: 494.4
    According to orthodox quantum mechanics, state vectors change in two incompatible ways: "deterministically" in accordance with Schroedinger's time-dependent equation, and probabilistically if and only if a measurement is made. It is argued here that the problem of measurement arises because the precise mutually exclusive conditions for these two types of transitions to occur are not specified within orthodox quantum mechanics. Fundamentally, this is due to an inevitable ambiguity in the notion of "meawurement" itself. Hence, if the problem of (...)
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  28. Tomasz Bigaj (2007). Counterfactuals and Non-Locality of Quantum Mechanics: The Bedford–Stapp Version of the GHZ Theorem. [REVIEW] Foundations of Science 12 (1):85-108.score: 489.6
    In the paper, the proof of the non-locality of quantum mechanics, given by Bedford and Stapp (1995), and appealing to the GHZ example, is analyzed. The proof does not contain any explicit assumption of realism, but instead it uses formal methods and techniques of the Lewis calculus of counterfactuals. To ascertain the validity of the proof, a formal semantic model for counterfactuals is constructed. With the help of this model it can be shown that the proof is faulty, because (...)
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  29. Roderich Tumulka (2007). Comment on “The Free Will Theorem”. Foundations of Physics 37 (2):186-197.score: 473.6
    In a recent paper Conway and Kochen, Found. Phys. 36, 2006, claim to have established that theories of the Ghirardi-Rimini-Weber (RW) type, i.e., of spontaneous wave function collapse, cannot be made relativistic. On the other hand, relativistic GRW-type theories have already been presented, in my recent paper, J. Stat. Phys. 125, 2006, and by Dowker and Henson, J. Stat. Phys. 115, 2004. Here, I elucidate why these are not excluded by the arguments of Conway and Kochen.
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  30. Masanao Ozawa & Yuichiro Kitajima (2012). Reconstructing Bohr's Reply to EPR in Algebraic Quantum Theory. Foundations of Physics 42 (4):475-487.score: 472.8
    Halvorson and Clifton have given a mathematical reconstruction of Bohr’s reply to Einstein, Podolsky and Rosen (EPR), and argued that this reply is dictated by the two requirements of classicality and objectivity for the description of experimental data, by proving consistency between their objectivity requirement and a contextualized version of the EPR reality criterion which had been introduced by Howard in his earlier analysis of Bohr’s reply. In the present paper, we generalize the above consistency theorem, with a rather (...)
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  31. Amit Hagar (2007). Experimental Metaphysics2: The Double Standard in the Quantum-Information Approach to the Foundations of Quantum Theory. Studies in History and Philosophy of Modern Physics 38 (4):906-919.score: 470.4
    Among the alternatives of non-relativistic quantum mechanics (NRQM) there are those that give different predictions than quantum mechanics in yet-untested circumstances, while remaining compatible with current empirical findings. In order to test these predictions, one must isolate one’s system from environmental induced decoherence, which, on the standard view of NRQM, is the dynamical mechanism that is responsible for the ‘apparent’ collapse in open quantum systems. But while recent advances in condensed-matter physics may lead in the near (...)
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  32. Valia Allori (2013). On the Metaphysics of Quantum Mechanics. In Soazig Lebihan (ed.), Precis de la Philosophie de la Physique. Vuibert.score: 466.6
    What is quantum mechanics about? The most natural way to interpret quantum mechanics realistically as a theory about the world might seem to be what is called wave function ontology: the view according to which the wave function mathematically represents in a complete way fundamentally all there is in the world. Erwin Schroedinger was one of the first proponents of such a view, but he dismissed it after he realized it led to macroscopic superpositions (if the wave (...)
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  33. Otto Bergmann (1988). A Quantum Mechanical Version of the Paper by E. Schrödinger “Über Die Umkehrung der Naturgesetze”. Foundations of Physics 18 (3):373-378.score: 463.2
    The principal results of Schrödinger's paper are reviewed and a possible extension of his formalism for diffusion processes to general quantum mechanical processes is given. The formalism is not in accord with the general theory of transformation of quantum mechanics and violates the basic assumption of the unpredictable change of a system due to a measurement. Nevertheless, the formalism leads to a density operator which is constructed according to accepted quantum mechanical rules.
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  34. Jeffrey A. Barrett (1995). The Single-Mind and Many-Minds Versions of Quantum Mechanics. Erkenntnis 42 (1):89 - 105.score: 462.8
    There is a long tradition of trying to find a satisfactory interpretation of Everett's relative-state formulation of quantum mechanics. Albert and Loewer recently described two new ways of reading Everett: one we will call the single-mind theory and the other the many-minds theory. I will briefly describe these theories and present some of their merits and problems. Since both are no-collapse theories, a significant merit is that they can take advantage of certain properties of the (...)
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  35. Harald Walach & Nikolaus von Stillfried (2011). Generalised Quantum Theory—Basic Idea and General Intuition: A Background Story and Overview. [REVIEW] Axiomathes 21 (2):185-209.score: 460.8
    Science is always presupposing some basic concepts that are held to be useful. These absolute presuppositions (Collingwood) are rarely debated and form the framework for what has been termed paradigm by Kuhn. Our currently accepted scientific model is predicated on a set of presuppositions that have difficulty accommodating holistic structures and relationships and are not geared towards incorporating non-local correlations. Since the theoretical models we hold also determine what we perceive and take as scientifically viable, it is important to look (...)
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  36. Angelo Bassi (ed.) (2006). Quantum Mechanics: Are There Quantum Jumps? Trieste, Italy, 5 Spetember -2005 and on the Present Status of Quantum Mechanics Lošinj, Croatia 7-9 September 2005. [REVIEW] American Institute of Physics.score: 460.8
    This conference brought together experts in different fields related to the foundations of quantum mechanics, ranging from mathematical physics to experimental physics, as well as the philosophy of science. The major topics discussed are: collapse models, Bohemian mechanics and their relativistic extensions, other alternative formulation of quantum mechanics, properties of entanglement, statistical physics and probability theory, new experimental results, as well as philosophical and epistemological issues.
     
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  37. Shan Gao (2006). A Model of Wavefunction Collapse in Discrete Space-Time. International Journal of Theoretical Physics 45 (10):1965-1979.score: 451.2
    We give a new argument supporting a gravitational role in quantum collapse. It is demonstrated that the discreteness of space-time, which results from the proper combination of quantum theory and general relativity, may inevitably result in the dynamical collapse of thewave function. Moreover, the minimum size of discrete space-time yields a plausible collapse criterion consistent with experiments. By assuming that the source to collapse the wave function is the inherent random motion of particles (...)
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  38. Roman Frigg, Review Kuhlmann, Lyre, and Wayne: Ontological Aspects of Quantum Field Theory.score: 451.2
    The essays in the first part, Approaches to Ontology, explore different philosophical frameworks in which the ontology of QFT could fruitfully be examined. Despite their differences, they all agree that traditional ontologies, in particular substance-attribute ontology, are unsuitable for QFT. Peter Simons begins by pointing out why substance-attribute ontology, applied set theory, fact ontology, occurrent ontologies, and trope theory are inadequate ontologies for QFT and then puts forward his own suggestion: factored ontology. The main idea of this ontology (...)
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  39. Sumati Surya & Petros Wallden (2010). Quantum Covers in Quantum Measure Theory. Foundations of Physics 40 (6):585-606.score: 451.2
    Sorkin’s recent proposal for a realist interpretation of quantum theory, the anhomomorphic logic or coevent approach, is based on the idea of a “quantum measure” on the space of histories. This is a generalisation of the classical measure to one which admits pair-wise interference and satisfies a modified version of the Kolmogorov probability sum rule. In standard measure theory the measure on the base set Ω is normalised to one, which encodes the statement that “Ω (...)
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  40. Josep Maria Font & Ramon Jansana (2001). Leibniz Filters and the Strong Version of a Protoalgebraic Logic. Archive for Mathematical Logic 40 (6):437-465.score: 451.2
    A filter of a sentential logic ? is Leibniz when it is the smallest one among all the ?-filters on the same algebra having the same Leibniz congruence. This paper studies these filters and the sentential logic ?+ defined by the class of all ?-matrices whose filter is Leibniz, which is called the strong version of ?, in the context of protoalgebraic logics with theorems. Topics studied include an enhanced Correspondence Theorem, characterizations of the weak algebraizability of ?+ and (...)
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  41. Shan Gao, Three Possible Implications of Spacetime Discreteness.score: 448.8
    We analyze the possible implications of spacetime discreteness for the special and general relativity and quantum theory. It is argued that the existence of a minimum size of spacetime may explain the invariance of the speed of light in special relativity and Einstein’s equivalence principle in general relativity. Moreover, the discreteness of spacetime may also result in the collapse of the wave function in quantum mechanics, which may provide a possible solution to the quantum measurement (...)
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  42. Shan Gao, Why the de Broglie-Bohm Theory is Probably Wrong.score: 448.8
    We investigate the validity of the field explanation of the wave function by analyzing the mass and charge density distributions of a quantum system. It is argued that a charged quantum system has effective mass and charge density distributing in space, proportional to the square of the absolute value of its wave function. This is also a consequence of protective measurement. If the wave function is a physical field, then the mass and charge density will be distributed in (...)
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  43. Mark A. Rubin (2011). Observers and Locality in Everett Quantum Field Theory. Foundations of Physics 41 (7):1236-1262.score: 448.8
    A model for measurement in collapse-free nonrelativistic fermionic quantum field theory is presented. In addition to local propagation and effectively-local interactions, the model incorporates explicit representations of localized observers, thus extending an earlier model of entanglement generation in Everett quantum field theory (Rubin in Found. Phys. 32:1495–1523, 2002). Transformations of the field operators from the Heisenberg picture to the Deutsch-Hayden picture, involving fictitious auxiliary fields, establish the locality of the model. The model is applied to (...)
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  44. Leon Bess (1981). Quantum Radiation Theory in a Diffusion Model Version. Foundations of Physics 11 (11-12):949-966.score: 444.0
    Using the diffusion model associated by the author with the wave equations, a part of current quantum radiation theory is reformulated so that the characteristic divergences in the associated calculations no longer arise. The reformulation does this by stipulating, on purely physical grounds, that a transition involving a “virtual” quantum must include a high frequency “cutoff” factor in its interaction Hamiltonian. For a transition involving a “real” quantum, the stipulation is that the “cutoff” factor is not (...)
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  45. Geoffrey Hellman (1987). EPR, Bell, and Collapse: A Route Around "Stochastic" Hidden Variables. Philosophy of Science 54 (4):558-576.score: 441.0
    Two EPR arguments are reviewed, for their own sake, and for the purpose of clarifying the status of "stochastic" hidden variables. The first is a streamlined version of the EPR argument for the incompleteness of quantum mechanics. The role of an anti-instrumentalist ("realist") interpretation of certain probability statements is emphasized. The second traces out one horn of a central foundational dilemma, the collapse dilemma; complex modal reasoning, similar to the original EPR, is used to derive determinateness (of (...)
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  46. E. V. Flores & J. M. De Tata (2010). Complementarity Paradox Solved: Surprising Consequences. [REVIEW] Foundations of Physics 40 (11):1731-1743.score: 434.4
    Afshar et al. claim that their experiment shows a violation of the complementarity inequality. In this work, we study their claim using a modified Mach-Zehnder setup that represents a simpler version of the Afshar experiment. We find that our results are consistent with Afshar et al. experimental findings. However, we show that within standard quantum mechanics the results of the Afshar experiment do not lead to a violation of the complementarity inequality. We show that their claim originates from (...)
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  47. GianCarlo Ghirardi & Raffaele Romano (2013). About Possible Extensions of Quantum Theory. Foundations of Physics 43 (7):881-894.score: 433.8
    Recently it has been claimed that no extension of quantum theory can have improved predictive power, the statement following, according to the authors, from the assumptions of free will and of the correctness of quantum predictions concerning the correlations of measurement outcomes. Here we prove that the argument is basically flawed by an inappropriate use of the assumption of free will. In particular, among other implications, the claim, if correct, would imply that Bohmian Mechanics is incompatible with (...)
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  48. Cozmin Ududec, Howard Barnum & Joseph Emerson (2011). Three Slit Experiments and the Structure of Quantum Theory. Foundations of Physics 41 (3):396-405.score: 433.8
    In spite of the interference manifested in the double-slit experiment, quantum theory predicts that a measure of interference defined by Sorkin and involving various outcome probabilities from an experiment with three slits, is identically zero. We adapt Sorkin’s measure into a general operational probabilistic framework for physical theories, and then study its relationship to the structure of quantum theory. In particular, we characterize the class of probabilistic theories for which the interference measure is zero as ones (...)
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  49. Rüdiger Schack (2003). Quantum Theory From Four of Hardy's Axioms. Foundations of Physics 33 (10):1461-1468.score: 428.4
    In a recent paper [e-print quant-ph/0101012], Hardy has given a derivation of “quantum theory from five reasonable axioms.” Here we show that Hardy's first axiom, which identifies probability with limiting frequency in an ensemble, is not necessary for his derivation. By reformulating Hardy's assumptions, and modifying a part of his proof, in terms of Bayesian probabilities, we show that his work can be easily reconciled with a Bayesian interpretation of quantum probability.
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