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  1. Influences, Histories, and Reality.Bernard D'Espagnat - 1996 - Foundations of Physics 26 (7):919-928.
    It is stressed that any theory of which it is claimed that it is compatible both with standard realism and with the experimental data is subject to severe constraints. One is that it must either incorporate superluminal influences or negate the free will of the experimentalist. The other one is that, in it. it is only at the price of accepting “backward causality” that a measurement can he interpreted as revealing the value the measured quantity had, just before, rather than (...)
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  • Decoherence and Wave Function Collapse.Roland Omnès - 2011 - Foundations of Physics 41 (12):1857-1880.
    The possibility of consistency between the basic quantum principles of quantum mechanics and wave function collapse is reexamined. A specific interpretation of environment is proposed for this aim and is applied to decoherence. When the organization of a measuring apparatus is taken into account, this approach leads also to an interpretation of wave function collapse, which would result in principle from the same interactions with environment as decoherence. This proposal is shown consistent with the non-separable character of quantum mechanics.
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  • Relativistic Dynamical Reduction Models: General Framework and Examples. [REVIEW]G. C. Ghirardi, R. Grassi & P. Pearle - 1990 - Foundations of Physics 20 (11):1271-1316.
    The formulation of a relativistic theory of state-vector reduction is proposed and analyzed, and its conceptual consequences are elucidated. In particular, a detailed discussion of stochastic invariance and of local and nonlocal aspects at the level of individual systems is presented.
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  • Copenhagen Quantum Mechanics Emerges From a Deterministic Schrödinger Theory in 11 Dimensional Spacetime Including Weak Field Gravitation.G. Doyen & D. Drakova - 2015 - Foundations of Physics 45 (8):959-999.
    We construct a world model consisting of a matter field living in 4 dimensional spacetime and a gravitational field living in 11 dimensional spacetime. The seven hidden dimensions are compactified within a radius estimated by reproducing the particle–wave characteristics of diffraction experiments. In the presence of matter fields the gravitational field develops localized modes with elementary excitations called gravonons which are induced by the sources. The final world model treated here contains only gravonons and a scalar matter field. The gravonons (...)
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  • Null-Result Detection and Einstein-Podolsky-Rosen Correlations.Luiz Carlos Ryff - 2014 - Foundations of Physics 44 (1):58-70.
    It follows from Bell’s theorem and quantum mechanics that the detection of a particle of an entangled pair can (somehow) “force” the other distant particle of the pair into a well-defined state (which is equivalent to a reduction of the state vector): no property previously shared by the particles can explain the predicted quantum correlations. This result has been corroborated by experiment, although some loopholes still remain. However, it has not been experimentally proved—and it is far from obvious—that the absence (...)
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  • The Conway-Kochen Argument and Relativistic GRW Models.Angelo Bassi & GianCarlo Ghirardi - 2007 - Foundations of Physics 37 (2):169-185.
    In a recent paper, Conway and Kochen proposed what is now known as the “Free Will theorem” which, among other things, should prove the impossibility of combining GRW models with special relativity, i.e., of formulating relativistically invariant models of spontaneous wavefunction collapse. Since their argument basically amounts to a non-locality proof for any theory aiming at reproducing quantum correlations, and since it was clear since very a long time that any relativistic collapse model must be non-local in some way, we (...)
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  • A Locally Deterministic, Detector-Based Model of Quantum Measurement.Brian R. La Cour - 2014 - Foundations of Physics 44 (10):1059-1084.
    This paper describes a simple, causally deterministic model of quantum measurement based on an amplitude threshold detection scheme. Surprisingly, it is found to reproduce many phenomena normally thought to be uniquely quantum in nature. To model an \(N\) -dimensional pure state, the model uses \(N\) complex random variables given by a scaled version of the wave vector with additive complex noise. Measurements are defined by threshold crossings of the individual components, conditioned on single-component threshold crossings. The resulting detection probabilities match (...)
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  • Bohm Trajectory and Feynman Path Approaches to the “Tunneling Time Problem”.C. R. Leavens - 1995 - Foundations of Physics 25 (2):229-268.
    A comparison is made between the Bohm trajectory and Feynman path approaches to the long-standing problem of determining the average lime taken for a particle described by the Schrödinger wave function ψ to tunnel through a potential barrier. The former approach follows simply and uniquely from the basic postulates of Bohm's causal interpretation of quantum mechanics; the latter is intimately related to the most frequently cited approaches based on conventional interpretations. Emphasis is given to the fact that fundamentally different transmission (...)
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  • The Bell Theorem as a Special Case of a Theorem of Bass.Karl Hess & Walter Philipp - 2005 - Foundations of Physics 35 (10):1749-1767.
  • Unremarkable Contextualism: Dispositions in the Bohm Theory. [REVIEW]Constantine Pagonis & Rob Clifton - 1995 - Foundations of Physics 25 (2):281-296.
    One way to characterize dispositions is to take them to be reducible to categorical properties plus experimental arrangements. We argue that this view applied to Bohm 's ontological interpretation of quantum theory provides a good picture of the unremarkable nature of spin in that interpretation, and so explains how a simple realism of possessed values may be retained in the face of Kochen and Specker's theorem. With this in mind we discuss Redhead's influential analysis of Kochen and Specker's theorem which (...)
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  • Statevector Reduction in Discrete Time: A Random Walk in Hilbert Space. [REVIEW]Akihiro Nakano & Philip Pearle - 1994 - Foundations of Physics 24 (3):363-377.
    A simple model is presented in which the statevector evolves every ε seconds in one of two ways, according to a particular probability rule. It is shown that this random walk in Hilbert space results in reduction of the statevector. It is also shown how the continuous spontaneous localization (CSL) theory of statevector reduction is achieved as a limiting case of this model, exactly as Brownian motion is a limiting case of ordinary random walk. Finally, a slightly different but completely (...)
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  • Quantum Theory and the Relation Between the Conscious Mind and the Physical World.Euan J. Squires - 1993 - Synthese 97 (1):109-23.
    The measurement problem of quantum theory is discussed, and the difficulty of trying to solve it within the confines of a local, Lorentz-invariant physics is emphasised. This leads to the obvious suggestion to seek a solution beyond physics, in particular, by introducing the concept of consciousness. The resulting dualistic model, in the natural form suggested by quantum theory, is shown to differ in several respects from the classical model of Descartes, and to suggest solutions to some of the long-standing problems (...)
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  • Bohm Particles and Their Detection in the Light of Neutron Interferometry.H. R. Brown, C. Dewdney & G. Horton - 1995 - Foundations of Physics 25 (2):329-347.
    Properties sometimes attributed to the “particle” aspect of a neutron, e.g., mass and magnetic moment, cannot straightforwardly be regarded in the Bohm interpretation of quantum mechanics as localized at the hypothetical position of the particle. This is shown by examining a series of effects in neutron interferometry. A related thought-experiment also provides a variation of a recent demonstration that which-way detectors can appear to behave anomolously in the Bohm theory.
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  • Book Review. [REVIEW]James T. Cushing - 1995 - Foundations of Physics 25 (3):507-510.
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  • Indeterminism and the Direction of Time.Frank Arntzenius - 1995 - Topoi 14 (1):67-81.
    Many phenomena in the world display a striking time-asymmetry: the forwards transition frequencies are approximately invariant while the backwards ones are not. I argue in this paper that theories of such phenomena will entail that time has a direction, and that quantum mechanics in particular entails that the future is objectively different from the past.
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  • The Paradox of Two Bottles in Quantum Mechanics.Bogdan Mielnik - 1990 - Foundations of Physics 20 (6):745-755.
    A class of retrospective measurements analogous to the “delayed choice experiments” of Wheeler and Greenberger is considered. A new argument shows that the reduction of the wave packet must affect the past states of the system. As a side product, our argument implies that the axiom about the reduction of the wave packet in relativistic space-time cannot be consistently introduced.
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  • How to Interpret Quantum Mechanics.Jeffrey Bub - 1994 - Erkenntnis 41 (2):253 - 273.
    I formulate the interpretation problem of quantum mechanics as the problem of identifying all possible maximal sublattices of quantum propositions that can be taken as simultaneously determinate, subject to certain constraints that allow the representation of quantum probabilities as measures over truth possibilities in the standard sense, and the representation of measurements in terms of the linear dynamics of the theory. The solution to this problem yields a modal interpretation that I show to be a generalized version of Bohm's hidden (...)
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  • Space and Time: The Ongoing Quest. [REVIEW]Eftichios Bitsakis - 2005 - Foundations of Physics 35 (1):57-83.
    In this paper, I try to refute the Kantian a priorism. At the same time, I try to explain the existence of an a priori concerning space and time on the basis of contemporary neuro-physiology. This a priori is the opposite of the a-historical a priori of Kant. Concerning space and time, I argue that relativity concords with the philosophical thesis that space and time are forms of existence of matter. On the basis of this ontological principle, I support that (...)
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  • The Pauli Exclusion Principle. Can It Be Proved?I. G. Kaplan - 2013 - Foundations of Physics 43 (10):1233-1251.
    The modern state of the Pauli exclusion principle studies is discussed. The Pauli exclusion principle can be considered from two viewpoints. On the one hand, it asserts that particles with half-integer spin (fermions) are described by antisymmetric wave functions, and particles with integer spin (bosons) are described by symmetric wave functions. This is a so-called spin-statistics connection. The reasons why the spin-statistics connection exists are still unknown, see discussion in text. On the other hand, according to the Pauli exclusion principle, (...)
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  • Matrix-Based Logic for Application in Physics.Paul Weingartner - 2009 - Review of Symbolic Logic 2 (1):132-163.
    The paper offers a matrix-based logic (relevant matrix quantum physics) for propositions which seems suitable as an underlying logic for empirical sciences and especially for quantum physics. This logic is motivated by two criteria which serve to clean derivations of classical logic from superfluous redundancies and uninformative complexities. It distinguishes those valid derivations (inferences) of classical logic which contain superfluous redundancies and complexities and are in this sense from those which are or in the sense of allowing only the most (...)
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  • Critical Study David Wallace, The Emergent Multiverse: Quantum Theory According to the Everett Interpretation. Oxford University Press, 2012, 530 + Xv Pp. [REVIEW]Tim Maudlin - 2014 - Noûs 48 (4):794-808.
  • Is the Contextuality Loophole Fatal for the Derivation of Bell Inequalities?T. M. Nieuwenhuizen - 2011 - Foundations of Physics 41 (3):580-591.
    It is explained on a physical basis how absence of contextuality allows Bell inequalities to be violated, without bringing an implication on locality or realism. Hereto we connect first to the local realistic theory Stochastic Electrodynamics, and then put the argument more broadly. Thus even if Bell Inequality Violation is demonstrated beyond reasonable doubt, it will have no say on local realism, because absence of contextuality prevents the Bell inequalities to be derived from local realistic models.
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  • Consciousness, Free Will, and the Unimportance of Determinism.Galen Strawson - 1989 - Inquiry: An Interdisciplinary Journal of Philosophy 32 (March):3-27.
    This article begins with some brief reflexions on the definition of determinism (II), on the notion of the subject of experience (III), and on the relation between conscious experience and brain events (IV). The main discussion (V?XIII) focuses on the traditional view, endorsed by Honderich in his book A Theory of Determinism, that the truth of determinism poses some special threat to our ordinary conception of ourselves as morally responsible free agents (and also to our ?life?hopes'). It is argued that (...)
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  • What Could Be Caused Must Actually Be Caused.Christopher Gregory Weaver - 2012 - Synthese 184 (3):299-317.
    I give two arguments for the claim that all events which occur at the actual world and are such that they could be caused, are also such that they must actually be caused. The first argument is an improvement of a similar argument advanced by Alexander Pruss, which I show to be invalid. It uses Pruss’s Brouwer Analog for counterfactual logic, and, as a consequence, implies inconsistency with Lewis’s semantics for counterfactuals. While (I suggest) this consequence may not be objectionable, (...)
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  • Divine Purpose and Evolutionary Processes.Thomas F. Tracy - 2013 - Zygon 48 (2):454-465.
    When Darwin's theory of natural selection threatened to put Paley's Designer out of a job, one response was to reemploy God as the author of the evolutionary process itself. This idea requires an account of how God might be understood to act in biological history. I approach this question in two stages: first, by considering God's action as creator of the world as a whole, and second, by exploring the idea of particular divine action in the course of evolution. As (...)
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  • On the Consistency Between the Assumption of a Special System of Reference and Special Relativity.Vasco Guerra & Rodrigo de Abreu - 2006 - Foundations of Physics 36 (12):1826-1845.
    In a previous work, we have shown that the null result of the Michelson–Morley experiment in vacuum is deeply connected with the notion of time. The same is true for the postulate of constancy of the two-way speed of light in vacuum in all frames independently of the state of motion of the emitting body. The argumentation formerly given is very general and has to be true not only within Special Relativity and its “equivalence” of all inertial frames, but as (...)
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  • Aspects of Entanglement in Quantum Many-Body Systems.John W. Clark, Hessam Habibian, Aikaterini D. Mandilara & Manfred L. Ristig - 2010 - Foundations of Physics 40 (9-10):1200-1220.
    Knowledge of the entanglement properties of the wave functions commonly used to describe quantum many-particle systems can enhance our understanding of their correlation structure and provide new insights into quantum phase transitions that are observed experimentally or predicted theoretically. To illustrate this theme, we first examine the bipartite entanglement contained in the wave functions generated by microscopic many-body theory for the transverse Ising model, a system of Pauli spins on a lattice that exhibits an order-disorder magnetic quantum phase transition under (...)
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  • Reconnecting Science and Spirituality: Toward Overcoming a Taboo.Harald Walach & K. Helmut Reich - 2005 - Zygon 40 (2):423-442.
  • A Comparison Between Models of Gravity Induced Decoherence.Sayantani Bera, Sandro Donadi, Kinjalk Lochan & Tejinder P. Singh - 2015 - Foundations of Physics 45 (12):1537-1560.
    It has been suggested in the literature that spatial coherence of the wave function can be dynamically suppressed by fluctuations in the spacetime geometry. These fluctuations represent the minimal uncertainty that is present when one probes spacetime geometry with a quantum probe. Two similar models have been proposed, one by Diósi and one by Karolyhazy and collaborators, based on apparently unrelated minimal spacetime bounds. The two models arrive at somewhat different expressions for the dependence of the localization coherence length on (...)
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  • GRW: A Case Study in Quantum Ontology.Peter J. Lewis - 2006 - Philosophy Compass 1 (2):224–244.
  • The Wigner Function as Distribution Function.M. Revzen - 2006 - Foundations of Physics 36 (4):546-562.
    Some entangled states have nonnegative Wigner representative function. The latter allow being viewed as a distribution function of local hidden variables. It is argued herewith that the interpretation of expectation values using such distribution functions as local hidden variable theory requires restrictions pertaining to the observables under study. The reasoning lead to support the view that violation of Bell’s inequalities that is always possible for entangled states hinges not only on the states involved but also whether the dynamical variables have (...)
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  • A Quantum Theory of Consciousness.Shan Gao - 2008 - Minds and Machines 18 (1):39-52.
    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 “know”. As a result, the consciousness observer (...)
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  • Strong Constraints on Models That Explain the Violation of Bell Inequalities with Hidden Superluminal Influences.Valerio Scarani, Jean-Daniel Bancal, Antoine Suarez & Nicolas Gisin - 2014 - Foundations of Physics 44 (5):523-531.
    We discuss models that attempt to provide an explanation for the violation of Bell inequalities at a distance in terms of hidden influences. These models reproduce the quantum correlations in most situations, but are restricted to produce local correlations in some configurations. The argument presented in (Bancal et al. Nat Phys 8:867, 2012) applies to all of these models, which can thus be proved to allow for faster-than-light communication. In other words, the signalling character of these models cannot remain hidden.
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  • Empirical Consequences of the Scientific Construction: The Program of Local Hidden-Variables Theories in Quantum Mechanics. [REVIEW]Miguel Ferrero & Emilio Santos - 1997 - Foundations of Physics 27 (6):765-800.
    We claim that physics has been constructed because three “philosophical” principles have been respected, namely, realism, locality, and consistency. These principles lead to an interpretation of quantum mechanics (QM) in terms of local hidden-variables theories (LHV). In order to prove that LHV have not been refuted, we analyze the empirical proofs of Bell's inequalities and we argue that none is loophole-free. Then we propose a restricted QM that does not contain measurement postulates and that does not claim that all state (...)
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  • Three Measurement Problems.Tim Maudlin - 1995 - Topoi 14 (1):7-15.
    The aim of this essay is to distinguish and analyze several difficulties confronting attempts to reconcile the fundamental quantum mechanical dynamics with Born''s rule. It is shown that many of the proposed accounts of measurement fail at least one of the problems. In particular, only collapse theories and hidden variables theories have a chance of succeeding, and, of the latter, the modal interpretations fail. Any real solution demands new physics.
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  • Multinomial Distribution, Quantum Statistics and Einstein-Podolsky-Rosen Like Phenomena.Ratan Dasgupta & Sisir Roy - 2008 - Foundations of Physics 38 (4):384-394.
    Bose-Einstein statistics may be characterized in terms of multinomial distribution. From this characterization, an information theoretic analysis is made for Einstein-Podolsky-Rosen like situation; using Shannon’s measure of entropy.
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  • Does an Observer Belong in Physics?Jan Novotný - 2014 - Human Affairs 24 (2):170-177.
    In this paper we comment on the opinions of great philosophers from various epochs on the relationship between computers and the human mind. We ponder over whether we might be able to gain an understanding of the human mind and a perception of the world from the scientific point of view. We focus on the relationship between these two issues.
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  • Interference, Noncommutativity, and Determinateness in Quantum Mechanics.Jeffrey Bub - 1995 - Topoi 14 (1):39-43.
    I consider to what extent the phenomenon of interference precludes the possibility of attributing simultaneously determinate values to noncommuting observables, and I show that, while all observables can in principle be taken as simultaneously determinate, it suffices to take a suitable privileged observable as determinate to solve the measurement problem.
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  • Measurement and the Interpretation of Quantum Mechanics and Relativity Theory.W. M. De Muynck - 1995 - Synthese 102 (2):293 - 318.
    The axiomatic approaches of quantum mechanics and relativity theory are compared with approaches in which the theories are thought to describe readings of certain measurement operations. The usual axioms are shown to correspond with classes of ideal measurements. The necessity is discussed of generalizing the formalisms of both quantum mechanics and relativity theory so as to encompass more realistic nonideal measurements. It is argued that this generalization favours an empiricist interpretation of the mathematical formalisms over a realist one.
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  • Interpretation of the Hydrodynamical Formalism of Quantum Mechanics.Sebastiano Sonego - 1991 - Foundations of Physics 21 (10):1135-1181.
    The hydrodynamical formalism for the quantum theory of a nonrelativistic particle is considered, together with a reformulation of it which makes use of the methods of kinetic theory and is based on the existence of the Wigner phase-space distribution. It is argued that this reformulation provides strong evidence in favor of the statistical interpretation of quantum mechanics, and it is suggested that this latter could be better understood as an almost classical statistical theory. Moreover, it is shown how, within this (...)
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  • Larc: A State Reduction Theory of Quantum Measurement. [REVIEW]Michael Simpson - 2011 - Foundations of Physics 41 (10):1648-1663.
    This proposes a new theory of Quantum measurement; a state reduction theory in which reduction is to the elements of the number operator basis of a system, triggered by the occurrence of annihilation or creation (or lowering or raising) operators in the time evolution of a system. It is from these operator types that the acronym ‘LARC’ is derived. Reduction does not occur immediately after the trigger event; it occurs at some later time with probability P t per unit time, (...)
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  • Speed of Computation and Simulation.Subhash C. Kak - 1996 - Foundations of Physics 26 (10):1375-1386.
    This paper examines several issues related to information, speed of computation, and simulation of a physical process. It is argued that mental processes proceed at a rate close to the optimal based on thermodynamic considerations. Problems related to the simulation of a quantum mechanical system on a computer are reviewed. Parallels are drawn between biological and adaptive quantum systems.
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  • Realism, Positivism, Instrumentalism, and Quantum Geometry.Eduard Prugovečki - 1992 - Foundations of Physics 22 (2):143-186.
    The roles of classical realism, logical positivism, and pragmatic instrumentalism in the shaping of fundamental ideas in quantum physics are examined in the light of some recent historical and sociological studies of the factors that influenced their development. It is shown that those studies indicate that the conventionalistic form of instrumentalism that has dominated all the major post-World War II developments in quantum physics is not an outgrowth of the Copenhagen school, and that despite the “schism” in twentieth century physics (...)
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  • Bohm's Quantum Potentials and Quantum Gravity.Itamar Pitowsky - 1991 - Foundations of Physics 21 (3):343-352.
    A generally covariant theory, written in the spirit of Bohm's theory of quantum potentials, which applies to spinless, non interacting, gravitating systems, is formulated. In this theory the quantum state ψ is coupled to the metric tensor g, and the effect of the “quantum potential” is absorbed in the geometry. At the same time, ψ satisfies a covariant wave equation with respect to the very same g. This provides sufficient constraints to derive 11 coupled equations in the 11 unknowns: ψ (...)
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  • Photon Flux and Distance From the Source: Consequences for Quantum Communication.Andrei Khrennikov, Börje Nilsson, Sven Nordebo & Igor Volovich - 2014 - Foundations of Physics 44 (4):389-405.
    The paper explores the fundamental physical principles of quantum mechanics (in fact, quantum field theory) that limit the bit rate for long distances and examines the assumption used in this exploration that losses can be ignored. Propagation of photons in optical fibers is modelled using methods of quantum electrodynamics. We define the “photon duration” as the standard deviation of the photon arrival time; we find its asymptotics for long distances and then obtain the main result of the paper: the linear (...)
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  • Might Quantum-Induced Deviations From the Einstein Equations Detectably Affect Gravitational Wave Propagation?Adrian Kent - 2013 - Foundations of Physics 43 (6):707-718.
    A quantum measurement-like event can produce any of a number of macroscopically distinct results, with corresponding macroscopically distinct gravitational fields, from the same initial state. Hence the probabilistically evolving large-scale structure of space-time is not precisely or even always approximately described by the deterministic Einstein equations.Since the standard treatment of gravitational wave propagation assumes the validity of the Einstein equations, it is questionable whether we should expect all its predictions to be empirically verified. In particular, one might expect the stochasticity (...)
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  • Manifestly Covariant Quantum Theory with Invariant Evolution Parameter in Relativistic Dynamics.John R. Fanchi - 2011 - Foundations of Physics 41 (1):4-32.
    Manifestly covariant quantum theory with invariant evolution parameter is a parametrized relativistic dynamical theory. The study of parameterized relativistic dynamics (PRD) helps us understand the consequences of changing key assumptions of quantum field theory (QFT). QFT has been very successful at explaining physical observations and is the basis of the conventional paradigm, which includes the Standard Model of electroweak and strong interactions. Despite its record of success, some phenomena are anomalies that may require a modification of the Standard Model. The (...)
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  • Bell's Theorem and the Nature of Reality.R. A. Bertlmann - 1990 - Foundations of Physics 20 (10):1191-1212.
    We rediscuss the Einstein-Podolsky-Rosen paradox in Bohm's spin version and oppose to it Bohr's controversial point of view. Then we explain Bell's theorem, Bell inequalities, and its consequences. We describe the experiment of Aspect, Dalibard, and Roger in detail. Finally we draw attention to the nonlocal structure of the underlying theory.
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  • Quantum Tunneling Times: A Crucial Test for the Causal Program? [REVIEW]James T. Cushing - 1995 - Foundations of Physics 25 (2):269-280.
    It is generally believed that Bohm's version of quantum mechanics is observationally equivalent to standard quantum mechanics. A more careful statement is that the two theories will always make the same predictions for any question or problem that is well posed in both interpretations. The transit time of a “particle” between two points in space is not necessarily well defined in standard quantum mechanics, whereas it is in Bohm's theory since there is always a particle following a definite trajectory. For (...)
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  • Nonlocal Forces of Inertia in Cosmology.André K. T. Assis & Peter Graneau - 1996 - Foundations of Physics 26 (2):271-283.
    This paper reviews the origin of inertia according to Mach's principle and Weber's law of gravitation. The resulting theory is based on simultaneous nonlocal gravitational interactions between particles in the solar system and others in the remote universe beyond the Milky Way galaxy. It explains the precession of the perihelion of Mercury. A most important implication of the Mach-Weber theory of the force of inertia is the necessity for a large amount of uniformly distributed matter in the galactic universe. This (...)
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