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Philosophy of Physical Science

Edited by Hans Halvorson (Princeton University)
Assistant editor: Joshua Luczak (University of Western Ontario, Georgetown University)
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  1. added 2016-06-01
    James Goetz (forthcoming). Semiclassical Theism and the Passage of Planck Times. Theology and Science.
  2. added 2016-05-29
    F. De Zela (forthcoming). Gleason-Type Theorem for Projective Measurements, Including Qubits: The Born Rule Beyond Quantum Physics. Foundations of Physics:1-14.
    Born’s quantum probability rule is traditionally included among the quantum postulates as being given by the squared amplitude projection of a measured state over a prepared state, or else as a trace formula for density operators. Both Gleason’s theorem and Busch’s theorem derive the quantum probability rule starting from very general assumptions about probability measures. Remarkably, Gleason’s theorem holds only under the physically unsound restriction that the dimension of the underlying Hilbert space \ must be larger than two. Busch’s theorem (...)
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  3. added 2016-05-29
    Desmond Sander (2014). Mindful Physics — A New Account of What Happens. AENESIDEMUS PRESS.
    A physics that fails to take account of minds, or account for them, cannot be quite right; a physics that accounts so beautifully and so powerfully for so much of what we observe cannot be quite wrong. This book had that conundrum as its starting point, and resolves it. The mindful physics we need is complementary to the compelling and successful but mind-ignoring physics of today. It is the physics that life, especially human life, has made and is making here (...)
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  4. added 2016-05-25
    Matias Slavov (2016). Empiricism and Relationism Intertwined: Hume and Einstein’s Special Theory of Relativity. Theoria: Revista de Teoría, Historia y Fundamentos de la Ciencia 31 (2):247-263.
    Einstein acknowledged that his reading of Hume influenced the development of his special theory of relativity. In this article, I juxtapose Hume’s philosophy with Einstein’s philosophical analysis related to his special relativity. I argue that there are two common points to be found in their writings, namely an empiricist theory of ideas and concepts, and a relationist ontology regarding space and time. The main thesis of this article is that these two points are intertwined in Hume and Einstein.
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  5. added 2016-05-24
    Christine C. Dantas (forthcoming). An Inhomogeneous Space–Time Patching Model Based on a Nonlocal and Nonlinear Schrödinger Equation. Foundations of Physics:1-24.
    We consider an integrable, nonlocal and nonlinear, Schrödinger equation as a model for building space–time patchings in inhomogeneous loop quantum cosmology. We briefly review exact solutions of the NNSE, specially those obtained through “geometric equivalence” methods. Furthemore, we argue that the integrability of the NNSE could be linked to consistency conditions derived from LQC, under the assumption that the patchwork dynamics behaves as an integrable many-body system.
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  6. added 2016-05-21
    Massimo Tessarotto, Michael Mond & Davide Batic (forthcoming). Hamiltonian Structure of the Schrödinger Classical Dynamical System. Foundations of Physics:1-41.
    The connection between quantum mechanics and classical statistical mechanics has motivated in the past the representation of the Schrödinger quantum-wave equation in terms of “projections” onto the quantum configuration space of suitable phase-space asymptotic kinetic models. This feature has suggested the search of a possible exact super-dimensional classical dynamical system, denoted as Schrödinger CDS, which uniquely determines the time-evolution of the underlying quantum state describing a set of N like and mutually interacting quantum particles. In this paper the realization of (...)
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  7. added 2016-05-15
    Kimberly K. Boddy, Sean M. Carroll & Jason Pollack (2016). De Sitter Space Without Dynamical Quantum Fluctuations. Foundations of Physics 46 (6):702-735.
    We argue that, under certain plausible assumptions, de Sitter space settles into a quiescent vacuum in which there are no dynamical quantum fluctuations. Such fluctuations require either an evolving microstate, or time-dependent histories of out-of-equilibrium recording devices, which we argue are absent in stationary states. For a massive scalar field in a fixed de Sitter background, the cosmic no-hair theorem implies that the state of the patch approaches the vacuum, where there are no fluctuations. We argue that an analogous conclusion (...)
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  8. added 2016-05-14
    O. Cristi Stoica & Iulian D. Toader (forthcoming). Spacetime Singularities and Invariance. Belgrade Philosophical Annual.
    This paper discusses a novel approach to singularities, based on a recent extension of general relativity that shows why singularities do not constitute a breakdown of physical laws: it is not only the case that physical laws are valid, but they also remain invariant at singularities. The paper describes this kind of invariance, and draws its consequences for our understanding of equivalence in general relativity. In particular, it points out that the difference between the metrics at singularities and those outside (...)
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  9. added 2016-05-14
    Matt Farr, Review of Mathias Frisch's Causal Reasoning in Physics. [REVIEW]
    Review of 'Causal Reasoning in Physics' by Mathias Frisch for British Journal for Philosophy of Science.
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  10. added 2016-05-13
    Michael J. Shaffer (forthcoming). Lakatos’ Quasi-Empiricism in the Philosophy of Mathematics. Polish Journal of Philosophy.
    Imre Lakatos' views on the philosophy of mathematics are important and they have often been underappreciated. The most obvious lacuna in this respect is the lack of detailed discussion and analysis of his 1976a paper and its implications for the methodology of mathematics, particularly its implications with respect to argumentation and the matter of how truths are established in mathematics. The most important themes that run through his work on the philosophy of mathematics and which culminate in the 1976a paper (...)
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  11. added 2016-05-11
    Philip D. Mannheim (forthcoming). PT Symmetry, Conformal Symmetry, and the Metrication of Electromagnetism. Foundations of Physics:1-29.
    We present some interesting connections between PT symmetry and conformal symmetry. We use them to develop a metricated theory of electromagnetism in which the electromagnetic field is present in the geometric connection. However, unlike Weyl who first advanced this possibility, we do not take the connection to be real but to instead be PT symmetric, with it being \ rather than \ itself that then appears in the connection. With this modification the standard minimal coupling of electromagnetism to fermions is (...)
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  12. added 2016-05-11
    Arkady Bolotin (forthcoming). Constructibility of the Universal Wave Function. Foundations of Physics:1-16.
    This paper focuses on a constructive treatment of the mathematical formalism of quantum theory and a possible role of constructivist philosophy in resolving the foundational problems of quantum mechanics, particularly, the controversy over the meaning of the wave function of the universe. As it is demonstrated in the paper, unless the number of the universe’s degrees of freedom is fundamentally upper bounded or hypercomputation is physically realizable, the universal wave function is a non-constructive entity in the sense of constructive recursive (...)
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  13. added 2016-05-09
    Tomasz Bigaj (forthcoming). On Some Troubles with the Metaphysics of Fermionic Compositions. Foundations of Physics:1-17.
    In this paper I discuss some metaphysical consequences of an unorthodox approach to the problem of the identity and individuality of “indistinguishable” quantum particles. This approach is based on the assumption that the only admissible way of individuating separate components of a given system is with the help of the permutation-invariant qualitative properties of the total system. Such a method of individuation, when applied to fermionic compositions occupying so-called GMW-nonentangled states, yields highly implausible consequences regarding the number of distinct components (...)
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  14. added 2016-05-07
    Timothy H. Boyer (forthcoming). Classical Zero-Point Radiation and Relativity: The Problem of Atomic Collapse Revisited. Foundations of Physics:1-11.
    The physicists of the early twentieth century were unaware of two aspects which are vital to understanding some aspects of modern physics within classical theory. The two aspects are: the presence of classical electromagnetic zero-point radiation, and the importance of special relativity. In classes in modern physics today, the problem of atomic collapse is still mentioned in the historical context of the early twentieth century. However, the classical problem of atomic collapse is currently being treated in the presence of classical (...)
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  15. added 2016-05-07
    Gerard ’T. Hooft (forthcoming). Black Hole Unitarity and Antipodal Entanglement. Foundations of Physics:1-14.
    Hawking particles emitted by a black hole are usually found to have thermal spectra, if not exactly, then by a very good approximation. Here, we argue differently. It was discovered that spherical partial waves of in-going and out-going matter can be described by unitary evolution operators independently, which allows for studies of space-time properties that were not possible before. Unitarity dictates space-time, as seen by a distant observer, to be topologically non-trivial. Consequently, Hawking particles are only locally thermal, but globally (...)
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  16. added 2016-05-07
    Stephen Puryear (forthcoming). Finitism, Divisibility, and the Beginning of the Universe: Replies to Loke and Dumsday. Australasian Journal of Philosophy.
    Some philosophers contend that the past must be finite in duration, because otherwise reaching the present would have involved the sequential occurrence of an actual infinity of events, which they regard as impossible. I recently developed a new objection to this finitist argument, to which Andrew Ter Ern Loke and Travis Dumsday have replied. Here I respond to the three main points raised in their replies.
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  17. added 2016-05-07
    Anwei Zhang (forthcoming). The Formalism for Energy Changing Rate of an Accelerated Atom Coupled with Electromagnetic Vacuum Fluctuations. Foundations of Physics:1-9.
    The structure of the rate of variation of the atomic energy for an arbitrary stationary motion of the atom in interaction with a quantum electromagnetic field is investigated. Our main purpose is to rewrite the formalism in Zhu et al. and to deduce the general expressions of the Einstein A coefficients of an atom on an arbitrary stationary trajectory. The total rate of change of the energy and Einstein coefficients of the atom near a plate with finite temperature or acceleration (...)
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  18. added 2016-05-07
    Wayne C. Myrvold (forthcoming). Quantum Mechanics and Narratability. Foundations of Physics:1-17.
    As has been noted by several authors, in a relativistic context, there is an interesting difference between classical and quantum state evolution. For a classical system, a state history of a quantum system given along one foliation uniquely determines, without any consideration of the system’s dynamics, a state history along any other foliation. This is not true for quantum state evolution; there are cases in which a state history along one foliation is compatible with multiple distinct state histories along some (...)
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  19. added 2016-05-07
    Elias Okon & Daniel Sudarsky (forthcoming). Less Decoherence and More Coherence in Quantum Gravity, Inflationary Cosmology and Elsewhere. Foundations of Physics:1-28.
    In Crull it is argued that, in order to confront outstanding problems in cosmology and quantum gravity, interpretational aspects of quantum theory can by bypassed because decoherence is able to resolve them. As a result, Crull concludes that our focus on conceptual and interpretational issues, while dealing with such matters in Okon and Sudarsky, is avoidable and even pernicious. Here we will defend our position by showing in detail why decoherence does not help in the resolution of foundational questions in (...)
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  20. added 2016-05-05
    Sorin Bangu (2015). Neither Weak, Nor Strong? Emergence and Functional Reduction. In Morrison & Falkenburg (eds.), Why More is Different. Philosophical Issues in Condensed Matter Physics and Complex Systems. Springer 253-266.
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  21. added 2016-05-05
    Sorin Bangu (2015). Why Does Water Boil? Fictions in Scientific Explanation. In U. Mäki (ed.), Recent Developments in the Philosophy of Science. Springer 319-330.
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  22. added 2016-05-05
    Sorin Bangu (2013). Symmetry. In Batterman (ed.), The Oxford Handbook of Philosophy of Physics. Oxford Univ Press 287-313.
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  23. added 2016-05-03
    Anna Szyrwińska (2015). Relacja między nauką o logicznych możliwościach a zasadą zachowania energii. Rola badań Huygensa i Leibniza dla nowożytnej refleksji nad wolnością woli. IDEA – Studia Nad Strukturą I Rozwojem Pojęć Filozoficznych:191-202.
    The article investigates the relationship between Leibniz’s and Huygens’ theory of possibility and the principle of conservation of energy. It assumes that their criticisms of Cartesian views concerning those questions as well as their own achievements contributed to the formation of a new metaphysical basis for modern discussions on the freedom of the will. There are especially two problems whose role is crucial in this context, namely the question of God’s knowledge of the future conditionals (contingentia futura) and the mind-body (...)
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  24. added 2016-04-29
    Michel Gondran & Alexandre Gondran (forthcoming). Replacing the Singlet Spinor of the EPR-B Experiment in the Configuration Space with Two Single-Particle Spinors in Physical Space. Foundations of Physics:1-18.
    Recently, for spinless non-relativistic particles, Norsen and Norsen et al. show that in the de Broglie–Bohm interpretation it is possible to replace the wave function in the configuration space by single-particle wave functions in physical space. In this paper, we show that this replacment of the wave function in the configuration space by single-particle functions in the 3D-space is also possible for particles with spin, in particular for the particles of the EPR-B experiment, the Bohm version of the Einstein–Podolsky–Rosen experiment.
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  25. added 2016-04-28
    Anna Szyrwińska (2014). Z badań nad filozofią Kanta w Szkole Lwowsko-Warszawskiej: Hersz Bad o teorii Kanta-Laplace’a. Studia Z Historii Filozofii 3:145-161.
    Hersz Bad (1869–1942) was Kazimierz Twardowski’s student and belonged to the first generation of the Lvov-Warsaw School members. He specialized in the history of philosophy and led a number of remarkable analyses concerning Kant’s philosophy. At the example of his work one may see, how the methodological postulates of the Lvov Warsaw School were fulfilled at the field of historical philosophical investigations. The goal of the paper is to present Bad’s main achievements and to evaluate their meaning from the point (...)
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  26. added 2016-04-26
    J. H. Holland (1995). Hidden Order: How Adaptation Builds Complexity. Addison Wesley.
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  27. added 2016-04-26
    A. Beckermann, H. Flohr & Jaegwon Kim (eds.) (1992). Emergence or Reduction? Essays on the Prospect of Nonreductive Physicalism. De Gruyter.
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  28. added 2016-04-26
    H. Haken (1983). Synergetics, an Introduction: Nonequilibrium Phase Transitions and SelfOrganization in Physics, Chemistry, and Biology. Springer.
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  29. added 2016-04-25
    Nicholas W. Best (2016). What Was Revolutionary About the Chemical Revolution? In Eric Scerri & Grant Fisher (eds.), Essays in the Philosophy of Chemistry. Oxford University Press 37-59.
    Lavoisier and his allies should be regarded as philosophers of chemistry, for they took it upon themselves to carry out a scientific revolution. Inspired by enlightenment philosophy, they introduced new assumptions, apparatus and methods of experimentation. They provided a linguistic framework that would ensure These reforms, as much as any theoretical changes, are what make this period revolutionary. Moreover, by reading these scientists as philosophers of chemistry, we see that the Chemical Revolution was in many ways more revolutionary than Thomas (...)
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  30. added 2016-04-23
    David Ellerman, On Classical and Quantum Logical Entropy.
    The notion of a partition on a set is mathematically dual to the notion of a subset of a set, so there is a logic of partitions dual to Boole's logic of subsets (Boolean logic is usually mis-specified as "propositional" logic). The notion of an element of a subset has as its dual the notion of a distinction of a partition (a pair of elements in different blocks). Boole developed finite logical probability as the normalized counting measure on elements of (...)
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  31. added 2016-04-21
    Matthew A. Benton, John Hawthorne & Dani Rabinowitz (eds.) (forthcoming). Knowledge, Belief, and God: New Insights in Religious Epistemology. Oxford University Press.
    A collection of 16 new essays in the epistemology of religion, broadly construed. Includes work from historical perspectives (the medieval period; Hume; Scotus; Maimonides); in social epistemology (on testimony, disagreement, and expertise); formal epistemology (especially fine-tuning and many-worlds hypotheses); and rationality considerations (practical factors, modal arguments, phenomenal conservatism). -/- Contributors: Charity Anderson, Richard Cross, Billy Dunaway, Dani Rabinowitz, Isaac Choi, Hans Halvorson, John Hawthorne & Yoaav Isaacs, Roger White, Max Baker-Hytch, Rachel Elizabeth Fraser, Jennifer Lackey, Paulina Sliwa, Matthew Benton, Keith (...)
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  32. added 2016-04-19
    A. F. Bennett (forthcoming). Duffin–Kemmer–Petiau Particles Are Bosons. Foundations of Physics:1-19.
    The parametrized Duffin–Kemmer–Petiau wave equation is formulated for many relativistic particles of spin-0 or spin-1. The first-quantized formulation lacks the fields of creation and annihilation operators which satisfy commutation relations subject to causality conditions, and which are essential to the Quantum Field Theoretic proof of the spin-statistics connection. It is instead proved that the wavefunctions for identical particles must be symmetric by extension of the nonrelativistic argument of Jabs. The causal commutators of Quantum Field Theory restrict entanglement to separations of (...)
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  33. added 2016-04-17
    Andrew Holster, Irreversibility of Classical Mechanics.
    A simple classical mechanical system, consisting of an idealised classical gas in a simple container designed with some reflective barriers in place, is analysed, and shown to give rise to a surprising irreversible behaviour. The behaviour may appear strange to our physical intuition to start with; but more, it appears positively paradoxical, because classical mechanics is supposed to be time symmetric or reversible. The time reversal of any possible mechanical process in this system is also a possible mechanical process. And (...)
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  34. added 2016-04-14
    Domagoj Kuić (forthcoming). Predictive Statistical Mechanics and Macroscopic Time Evolution: Hydrodynamics and Entropy Production. Foundations of Physics:1-24.
    In the previous papers, it was demonstrated that applying the principle of maximum information entropy by maximizing the conditional information entropy, subject to the constraint given by the Liouville equation averaged over the phase space, leads to a definition of the rate of entropy change for closed Hamiltonian systems without any additional assumptions. Here, we generalize this basic model and, with the introduction of the additional constraints which are equivalent to the hydrodynamic continuity equations, show that the results obtained are (...)
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  35. added 2016-04-12
    Fredrik Andersen & Jonas R. Becker Arenhart (2016). Metaphysics Within Science: Against Radical Naturalism. Metaphilosophy 47 (2):159-180.
    In Every Thing Must Go James Ladyman and Don Ross argue for a radical version of naturalistic metaphysics and propose that contemporary analytic metaphysics is detached from science and should be discontinued. The present article addresses the issues of whether science and metaphysics are separable, intuitions and understanding should be excluded from scientific theory, and Ontic Structural Realism satisfies the criteria of the radical version of naturalism advanced by Ladyman and Ross. The point underlying those topics is that successful scientific (...)
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  36. added 2016-04-10
    H. G. Callaway (forthcoming). Fundamental Physics, Partial Models and Time’s Arrow. In L. Magnani (ed.), Proceedings of MBR2015. Springer
    This paper explores the scientific viability of the concept of causality—by questioning a central element of the distinction between “fundamental” and non-fundamental physics. It will be argued that the prevalent emphasis on fundamental physics involves formalistic and idealized partial models of physical regularities abstracting from and idealizing the causal evolution of physical systems. The accepted roles of partial models and of the special sciences in the growth of knowledge help demonstrate proper limitations of the concept of fundamental physics. We expect (...)
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  37. added 2016-04-08
    Sheng Sun & Jianhui Li (2016). No-Boundary Emergence and Book of Change. BIOCOSMOLOGY – NEO-ARISTOTELISM 6 (1):102-120.
    This work attempts to respond to Tomas Aquinas' Cosmological Argument in a way that combines Set Theory with the idea of the ‘Book of Change’. The study defines the ith Cause Set on which to operate on, which leads to the ontological commitment of austerity that the ‘First Cause's Compromise with emergence’ cannot be avoided. It is argued in the present paper that the concept that ‘emergence only consists of Synchronic Emergence and Diachronic Emergence’ should be extended to a broader (...)
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  38. added 2016-04-07
    Jon Lawhead, Self-Organization, Emergence, and Constraint in Complex Natural Systems.
    Contemporary complexity theory has been instrumental in providing novel rigorous definitions for some classic philosophical concepts, including emergence. In an attempt to provide an account of emergence that is consistent with complexity and dynamical systems theory, several authors have turned to the notion of constraints on state transitions. Drawing on complexity theory directly, this paper builds on those accounts, further developing the constraint-based interpretation of emergence and arguing that such accounts recover many of the features of more traditional accounts. We (...)
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  39. added 2016-04-07
    Gordon Belot (forthcoming). Undermined. Australasian Journal of Philosophy:1-11.
    A popular strategy for understanding the probabilities that arise in physics is to interpret them via reductionist accounts of chance—indeed, it is sometimes claimed that such accounts are uniquely well-suited to make sense of the probabilities in classical statistical mechanics. Here it is argued that reductionist accounts of chance carry a steep but unappreciated cost: when applied to physical theories of the relevant type, they inevitably distort the relations of probability that they take as input.
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  40. added 2016-04-07
    Jon Lawhead (2014). Lightning in a Bottle: Complexity, Chaos, and Computation in Climate Science. Dissertation, Columbia University
    Climatology is a paradigmatic complex systems science. Understanding the global climate involves tackling problems in physics, chemistry, economics, and many other disciplines. I argue that complex systems like the global climate are characterized by certain dynamical features that explain how those systems change over time. A complex system's dynamics are shaped by the interaction of many different components operating at many different temporal and spatial scales. Examining the multidisciplinary and holistic methods of climatology can help us better understand the nature (...)
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  41. added 2016-04-07
    Jon Lawhead (2012). Getting Fundamental About Doing Physics in The Big Bang. In Dean Kowalski (ed.), The Big Bang Theory and Philosophy. Blackwell 99-111.
  42. added 2016-04-06
    Ulrich Mohrhoff (2016). The Quantum Mechanics of Being and Its Manifestation. Cosmology 24.
    How can quantum mechanics be (i) the fundamental theoretical framework of contemporary physics and (ii) a probability calculus that presupposes the events to which, and on the basis of which, it assigns probabilities? The question is answered without invoking knowledge or observers, by interpreting the necessary distinction between two kinds of physical quantities - unconditionally definite quantities and quantities that have values only if they are measured - as a distinction between the manifested world and its manifestation.(The arXived version contains (...)
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  43. added 2016-04-05
    Christopher Gregory Weaver (forthcoming). On the Carroll-Chen Model. Journal for General Philosophy of Science / Zeitschrift für Allgemeine Wissenschaftstheorie:1-28.
    I argue that the Carroll-Chen cosmogonic model does not provide a plausible scientific explanation of the past hypothesis (the thesis that our universe began in an extremely low-entropy state). I suggest that this counts as a welcomed result for those who adopt a Mill-Ramsey-Lewis best systems account of laws and maintain that the past hypothesis is a brute fact that is a non-dynamical law.
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  44. added 2016-04-04
    Roman Sverdlov (forthcoming). How Mensky’s Continuous Measurement Can Emerge From GRW on Larger Time Scales. Foundations of Physics:1-11.
    In this paper we will show how “weighted path integral” proposed by Mensky and Kent can emerge out of Ghirardi Rimini Weber model.
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  45. added 2016-04-04
    Andrei Khrennikov (forthcoming). Reflections on Zeilinger–Brukner Information Interpretation of Quantum Mechanics. Foundations of Physics:1-9.
    In this short review I present my personal reflections on Zeilinger–Brukner information interpretation of quantum mechanics.In general, this interpretation is very attractive for me. However, its rigid coupling to the notion of irreducible quantum randomness is a very complicated issue which I plan to address in more detail. This note may be useful for general public interested in quantum foundations, especially because I try to analyze essentials of the information interpretation critically. This review is written in non-physicist friendly manner. Experts (...)
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  46. added 2016-04-04
    Aleksey V. Ilyin (forthcoming). The Born Rule and Time-Reversal Symmetry of Quantum Equations of Motion. Foundations of Physics:1-7.
    It was repeatedly underlined in literature that quantum mechanics cannot be considered a closed theory if the Born Rule is postulated rather than derived from the first principles. In this work the Born Rule is derived from the time-reversal symmetry of quantum equations of motion. The derivation is based on a simple functional equation that takes into account properties of probability, as well as the linearity and time-reversal symmetry of quantum equations of motion. The derivation presented in this work also (...)
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  47. added 2016-04-04
    Eyal Heifetz, Roumen Tsekov, Eliahu Cohen & Zohar Nussinov (forthcoming). On Entropy Production in the Madelung Fluid and the Role of Bohm’s Potential in Classical Diffusion. Foundations of Physics:1-10.
    The Madelung equations map the non-relativistic time-dependent Schrödinger equation into hydrodynamic equations of a virtual fluid. While the von Neumann entropy remains constant, we demonstrate that an increase of the Shannon entropy, associated with this Madelung fluid, is proportional to the expectation value of its velocity divergence. Hence, the Shannon entropy may grow due to an expansion of the Madelung fluid. These effects result from the interference between solutions of the Schrödinger equation. Growth of the Shannon entropy due to expansion (...)
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  48. added 2016-03-31
    Florian Boge, Ψ-Epistemic Models, Einsteinian Intuitions, and No-Gos. A Critical Study of Recent Developments on the Quantum State.
    Quantum mechanics notoriously faces the measurement problem, the problem that if read thoroughly, it implies the nonexistence of definite outcomes in measurement procedures. A plausible reaction to this and to related problems is to regard a system's quantum state |ψ> merely as an indication of our lack of knowledge about the system, i.e., to interpret it epistemically. However, there are radically different ways to spell out such an epistemic view of the quantum state. We here investigate recent developments in the (...)
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  49. added 2016-03-30
    Valeriy I. Sbitnev (forthcoming). Hydrodynamics of the Physical Vacuum: II. Vorticity Dynamics. Foundations of Physics:1-15.
    Physical vacuum is a special superfluid medium populated by enormous amount of virtual particle-antiparticle pairs. Its motion is described by the modified Navier–Stokes equation: the pressure gradient divided by the mass density is replaced by the gradient from the quantum potential; time-averaged the viscosity vanishes, but its variance is not zero. Vortex structures arising in this medium show infinitely long lifetime owing to zero average viscosity. The nonzero variance is conditioned by exchanging the vortex energy with zero-point vacuum fluctuations. The (...)
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  50. added 2016-03-29
    Alan Macdonald (2005). Comment On: “The Role of Dynamics in the Synchronization Problem”, by Hans C. Ohanian. American Journal of Physics 73 (2).
    Hans C. Ohanian 1 claims to “defeat” the conventionalist thesis of clock synchronization using an argument based on dynamics. My aim here is to show that his argument does not succeed.
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