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Richard Healey [84]Richard A. Healey [13]
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Richard Andrew Healey
University of Arizona
Richard Healey
McMaster University
  1.  71
    Gauging What's Real: The Conceptual Foundations of Contemporary Gauge Theories.Richard Healey - 2007 - Oxford University Press.
    This is a prize-winning study of an area of physics not previously explored by philosophy: gauge theory. Gauge theories have provided our most successful representations of the fundamental forces of nature. But how do such representations work? Healey defends an original answer to this question.
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  2.  35
    Quantum Theory and the Limits of Objectivity.Richard Healey - 2018 - Foundations of Physics 48 (11):1568-1589.
    Three recent arguments seek to show that the universal applicability of unitary quantum theory is inconsistent with the assumption that a well-conducted measurement always has a definite physical outcome. In this paper I restate and analyze these arguments. The import of the first two is diminished by their dependence on assumptions about the outcomes of counterfactual measurements. But the third argument establishes its intended conclusion. Even if every well-conducted quantum measurement we ever make will have a definite physical outcome, this (...)
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  3. Quantum Theory: A Pragmatist Approach.Richard A. Healey - 2012 - British Journal for the Philosophy of Science 63 (4):729-771.
    While its applications have made quantum theory arguably the most successful theory in physics, its interpretation continues to be the subject of lively debate within the community of physicists and philosophers concerned with conceptual foundations. This situation poses a problem for a pragmatist for whom meaning derives from use. While disputes about how to use quantum theory have arisen from time to time, they have typically been quickly resolved, and consensus reached, within the relevant scientific sub-community. Yet rival accounts of (...)
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  4. The Quantum Revolution in Philosophy.Richard Healey - 2017 - Oxford University Press.
    Quantum theory launched a revolution in physics. But we have yet to understand the revolution's significance for philosophy. Richard Healey opens a path to such understanding. The first part of this book offers a self-contained but opinionated introduction to quantum theory. The second part assesses the theory's philosophical significance.
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  5. Physical Composition.Richard Healey - 2013 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 44 (1):48-62.
    Atomistic metaphysics motivated an explanatory strategy which science has pursued with great success since the scientific revolution. By decomposing matter into its atomic and subatomic parts physics gave us powerful explanations and accurate predictions as well as providing a unifying framework for the rest of science. The success of the decompositional strategy has encouraged a widespread conviction that the physical world forms a compositional hierarchy that physics and other sciences are progressively articulating. But this conviction does not stand up to (...)
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  6. Holism and Nonseparability.Richard A. Healey - 1991 - Journal of Philosophy 88 (8):393-421.
  7.  35
    The Philosophy of Quantum Mechanics: An Interactive Interpretation.Richard A. Healey - 1989 - Cambridge University Press.
    This is one of the most important books on quantum mechanics to have appeared in recent years. It offers a dramatically new interpretation that resolves puzzles and paradoxes associated with the measurement problem and the behavior of coupled systems. A crucial feature of this interpretation is that a quantum mechanical measurement can be certain to have a particular outcome even when the observed system fails to have the property corresponding to that outcome just prior to the measurement interaction.
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  8.  21
    Interspecies justice: agency, self-determination, and assent.Richard Healey & Angie Pepper - forthcoming - Philosophical Studies:1-21.
    In this article, we develop and defend an account of the normative significance of nonhuman animal agency. In particular, we examine how animals’ agency interests impact upon the moral permissibility of our interactions with them. First, we defend the claim that nonhuman animals sometimes have rights to self-determination. However, unlike typical adult humans, nonhuman animals cannot exercise this right through the giving or withholding of consent. This combination of claims generates a puzzle about the permissibility of our interactions with nonhuman (...)
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  9. On the Reality of Gauge Potentials.Richard Healey - 2001 - Philosophy of Science 68 (4):432-455.
    Classically, a gauge potential was merely a convenient device for generating a corresponding gauge field. Quantum-mechanically, a gauge potential lays claim to independent status as a further feature of the physical situation. But whether this is a local or a global feature is not made any clearer by the variety of mathematical structures used to represent it. I argue that in the theory of electromagnetism (or a non-Abelian generalization) that describes quantum particles subject to a classical interaction, the gauge potential (...)
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  10. Perfect Symmetries.Richard Healey - 2009 - British Journal for the Philosophy of Science 60 (4):697-720.
    While empirical symmetries relate situations, theoretical symmetries relate models of a theory we use to represent them. An empirical symmetry is perfect if and only if any two situations it relates share all intrinsic properties. Sometimes one can use a theory to explain an empirical symmetry by showing how it follows from a corresponding theoretical symmetry. The theory then reveals a perfect symmetry. I say what this involves and why it matters, beginning with a puzzle that is resolved by the (...)
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  11.  78
    Holism and Nonseparability in Physics.Richard Healey - 2008 - Stanford Encyclopedia of Philosophy.
    It has sometimes been suggested that quantum phenomena exhibit a characteristic holism or nonseparability, and that this distinguishes quantum from classical physics. One puzzling quantum phenomenon arises when one performs measurements of spin or polarization on certain separated quantum systems. The results of these measurements exhibit patterns of statistical correlation that resist traditional causal explanation. Some have held that it is possible to understand these patterns as instances or consequences of quantum holism or nonseparability. Just what holism and nonseparability are (...)
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  12. How Quantum Theory Helps Us Explain.Richard Healey - 2012 - British Journal for the Philosophy of Science (1):axt031.
    I offer an account of how the quantum theory we have helps us explain so much. The account depends on a pragmatist interpretation of the theory: this takes a quantum state to serve as a source of sound advice to physically situated agents on the content and appropriate degree of belief about matters concerning which they are currently inevitably ignorant. The general account of how to use quantum states and probabilities to explain otherwise puzzling regularities is then illustrated by showing (...)
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  13.  16
    Holism and Nonseparability.Richard A. Healey - 1991 - Journal of Philosophy 88 (8):393.
  14. Gauge Theories and Holisms.Richard Healey - 2004 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 35 (4):619-642.
    Those looking for holism in contemporary physics have focused their attention primarily on quantum entanglement. But some gauge theories arguably also manifest the related phenomenon of nonseparability. While the argument is strong for the classical gauge theory describing electromagnetic interactions with quantum “particles”, it fails in the case of general relativity even though that theory may also be formulated in terms of a connection on a principal fiber bundle. Anandan has highlighted the key difference in his analysis of a supposed (...)
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  15. Can Physics Coherently Deny the Reality of Time?Richard Healey - 2002 - Royal Institute of Philosophy Supplement 50:293-.
    The conceptual and technical difficulties involved in creating a quantum theory of gravity have led some physicists to question, and even in some cases to deny, the reality of time. More surprisingly, this denial has found a sympathetic audience among certain philosophers of physics. What should we make of these wild ideas? Does it even make sense to deny the reality of time? In fact physical science has been chipping away at common sense aspects of time ever since its inception. (...)
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  16. Nonlocality and the Aharonov-Bohm Effect.Richard Healey - 1997 - Philosophy of Science 64 (1):18-41.
    At first sight the Aharonov- Bohm effect appears nonlocal, though not in the way EPR/Bell correlations are generally acknowledged to be nonlocal. This paper applies an analysis of nonlocality to the Aharonov- Bohm effect to show that its peculiarities may be blamed either on a failure of a principle of local action or on a failure of a principle of separability. Different interpretations of quantum mechanics disagree on how blame should be allocated. The parallel between the Aharonov- Bohm effect and (...)
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  17.  6
    How Quantum Theory Helps Us Explain.Richard Healey - 2015 - British Journal for the Philosophy of Science 66 (1):1-43.
    I offer an account of how the quantum theory we have helps us explain the enormous variety of phenomena it is generally taken to explain. The account depends on what I have elsewhere called a pragmatist interpretation of the theory. This rejects views according to which a quantum state describes or represents a physical system, holding instead that it functions as a source of sound advice to physically situated agents like us on the content and appropriate degree of belief about (...)
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  18.  10
    10. Referees for Philosophy of Science Referees for Philosophy of Science (Pp. 479-482).Justin Garson, Yasha Rohwer, Collin Rice, Matteo Colombo, Peter Brössel, Davide Rizza, Simon M. Huttegger, Richard Healey, Alyssa Ney & Kathryn Phillips - 2013 - Philosophy of Science 80 (3):334-355.
  19.  13
    Asymmetries in Time: Problems in the Philosophy of Science.Richard Healey & Paul Horwich - 1991 - Philosophical Review 100 (1):125.
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  20.  3
    The Philosophy of Quantum Mechanics: An Interactive Interpretation.Jeremy Butterfield & Richard Healey - 1992 - Philosophical Review 101 (4):911.
  21.  58
    Nonseparable Processes and Causal Explanation.Richard Healey - 1994 - Studies in History and Philosophy of Science Part A 25 (3):337-374.
    If physical reality is nonseparable, as quantum mechanics suggests, then it may contain processes of a quite novel kind. Such nonseparable processes could connect space-like separated events without violating relativity theory or any defensible locality condition. Appeal to nonseparable processes could ground theoretical explanations of such otherwise puzzling phenomena as the two-slit experiment, and EPR- type correlations. We find such phenomena puzzling because they threaten cherished conceptions of how causes operate to produce their effects. But nonseparable processes offer us an (...)
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  22.  52
    The Ontology of Consent: A Reply to Alexander.Richard Healey - 2015 - Analytic Philosophy 56 (4):354-363.
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  23. Reduction and Emergence in Bose-Einstein Condensates.Richard Healey - 2011 - Foundations of Physics 41 (6):1007-1030.
    A closer look at some proposed Gedanken-experiments on BECs promises to shed light on several aspects of reduction and emergence in physics. These include the relations between classical descriptions and different quantum treatments of macroscopic systems, and the emergence of new properties and even new objects as a result of spontaneous symmetry breaking.
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  24. Quantum Analogies: A Reply to Maudlin.Richard Healey - 1999 - Philosophy of Science 66 (3):440-447.
    Quantum mechanics predicted the Aharonov-Bohm effect and violations of Bell inequalities before either phenomenon was experimentally verified. It is now commonly taken to explain both phenomena. Maudlin has pointed out significant disanalogies between these phenomena. But he has failed to appreciate the striking analogy that emerges when one examines the structure of their quantum mechanical explanations. The fact that each may be explained quantum mechanically in terms of a locally-acting, but nonseparable process suggests that the lesson of quantum nonlocality may (...)
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  25. Causation in Quantum Mechanics.Richard Healey - 2009 - In Helen Beebee, Christopher Hitchcock & Peter Menzies (eds.), The Oxford Handbook of Causation. Oxford University Press.
     
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  26.  40
    Quantum States as Objective Informational Bridges.Richard Healey - 2017 - Foundations of Physics 47 (2):161-173.
    A quantum state represents neither properties of a physical system nor anyone’s knowledge of its properties. The important question is not what quantum states represent but how they are used—as informational bridges. Knowing about some physical situations, an agent may assign a quantum state to form expectations about other possible physical situations. Quantum states are objective: only expectations based on correct state assignments are generally reliable. If a quantum state represents anything, it is the objective probabilistic relations between its backing (...)
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  27.  11
    The Shaky Game: Einstein, Realism and the Quantum Theory.Richard Healey - 1990 - Noûs 24 (1):177-180.
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  28.  28
    Consent, Rights, and Reasons for Action.Richard Healey - 2019 - Criminal Law and Philosophy 13 (3):499-513.
    The normative power of consent plays a central role in enabling individuals to permissibly interact with one another. However, in the philosophical literature, the relationship between consent and permissible action is not always well understood. In this article I outline an account of the normative effect of valid consent, in order to clarify this relationship. I first argue that consent’s primary moral significance lies in its effect upon our interpersonal moral relationships. Specifically, I argue that valid consent serves to cancel (...)
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  29. Change Without Change, and How to Observe It in General Relativity.Richard Healey - 2004 - Synthese 141 (3):381 - 415.
    All change involves temporal variation of properties. There is change in the physical world only if genuine physical magnitudes take on different values at different times. I defend the possibility of change in a general relativistic world against two skeptical arguments recently presented by John Earman. Each argument imposes severe restrictions on what may count as a genuine physical magnitude in general relativity. These restrictions seem justified only as long as one ignores the fact that genuine change in a relativistic (...)
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  30. Incompleteness, Nonlocality and Realism: A Prolegomenon to the Philosophy of Quantum Mechanics. Michael Redhead.Richard A. Healey - 1991 - Philosophy of Science 58 (3):503-505.
  31.  41
    Quantum Decoherence in a Pragmatist View: Dispelling Feynman’s Mystery. [REVIEW]Richard Healey - 2012 - Foundations of Physics 42 (12):1534-1555.
    The quantum theory of decoherence plays an important role in a pragmatist interpretation of quantum theory. It governs the descriptive content of claims about values of physical magnitudes and offers advice on when to use quantum probabilities as a guide to their truth. The content of a claim is to be understood in terms of its role in inferences. This promises a better treatment of meaning than that offered by Bohr. Quantum theory models physical systems with no mention of measurement: (...)
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  32.  15
    Pragmatist Quantum Realism.Richard Healey - unknown
    Realism comes in many varieties, in science and elsewhere. Van Fraassen's influential formulation took scientific realism to include the view that science aims to give us, in its theories, a literally true story of what the world is like. So understood, a quantum realist takes quantum theory to aim at correctly representing the world: many would add that its success justifies believing this representation is more or less correct. But quantum realism has been understood both more narrowly and more broadly. (...)
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  33.  15
    Local Causality, Probability and Explanation.Richard A. Healey - 2016 - In Mary Bell & Shan Gao (eds.), Quantum Nonlocality and Reality: 50 Years of Bell's Theorem. Cambridge, UK: Cambridge University Press. pp. 172 - 194.
    In papers published in the 25 years following his famous 1964 proof John Bell refined and reformulated his views on locality and causality. Although his formulations of local causality were in terms of probability, he had little to say about that notion. But assumptions about probability are implicit in his arguments and conclusions. Probability does not conform to these assumptions when quantum mechanics is applied to account for the particular correlations Bell argues are locally inexplicable. This account involves no superluminal (...)
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  34.  88
    Dissipating the Quantum Measurement Problem.Richard Healey - 1995 - Topoi 14 (1):55-65.
    The integration of recent work on decoherence into a so-called modal interpretation offers a promising new approach to the measurement problem in quantum mechanics. In this paper I explain and develop this approach in the context of the interactive interpretation presented in Healey (1989). I begin by questioning a number of assumptions which are standardly made in setting up the measurement problem, and I conclude that no satisfactory solution can afford to ignore the influence of the environment. Further, I argue (...)
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  35. Causation, Robustness, and EPR.Richard A. Healey - 1992 - Philosophy of Science 59 (2):282-292.
    In his recent work, Michael Redhead (1986, 1987, 1989, 1990) has introduced a condition he calls robustness which, he argues, a relation must satisfy in order to be causal. He has used this condition to argue further that EPR-type correlations are neither the result of a direct causal connection between the correlated events, nor the result of a common cause associated with the source of the particle pairs which feature in these events. Andrew Elby (1992) has used this same condition (...)
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  36.  21
    How to Use Quantum Theory Locally to Explain EPR-Bell Correlations.Richard Healey - 2013 - In Vassilios Karakostas & Dennis Dieks (eds.), Epsa11 Perspectives and Foundational Problems in Philosophy of Science. Springer. pp. 195--205.
  37. Science Without Representation.Richard Healey - 2010 - Analysis 70 (3):536-547.
    I think van Fraassen is right to see the development of quantum mechanics as a turning point for physical science with a profound moral for philosophy, and not just for the philosophy of science. But the moral is not that even a completely successful physical theory may fail to account for the appearances by showing how they arise within the reality it represents. The moral is more radical: it is that a physical theory – even a fundamental theory – may (...)
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  38. Synopsis and Discussion: Philosophy of Gauge Theory.Gordon Belot, John Earman, Richard Healey, Tim Maudlin, Antigone Nounou & Ward Struyve - manuscript
    This document records the discussion between participants at the workshop "Philosophy of Gauge Theory," Center for Philosophy of Science, University of Pittsburgh, 18-19 April 2009.
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  39.  74
    Substance, Modality and Spacetime.Richard Healey - 1995 - Erkenntnis 42 (3):287 - 316.
  40.  3
    A Pragmatist View of the Metaphysics of Entanglement.Richard Healey - 2020 - Synthese 197 (10):4265-4302.
    Quantum entanglement is widely believed to be a feature of physical reality with undoubted metaphysical implications. But Schrödinger introduced entanglement as a theoretical relation between representatives of the quantum states of two systems. Entanglement represents a physical relation only if quantum states are elements of physical reality. So arguments for metaphysical holism or nonseparability from entanglement rest on a questionable view of quantum theory. Assignment of entangled quantum states predicts experimentally confirmed violation of Bell inequalities. Can one use these experimental (...)
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  41.  56
    How Many Worlds?Richard A. Healey - 1984 - Noûs 18 (4):591-616.
  42.  76
    Modern Logic and Quantum Mechanics. Rachel Wallace Garden.Richard Healey - 1985 - Philosophy of Science 52 (4):642-644.
  43. Part and Whole in Physics: An Introduction.Richard Healey & Jos Uffink - 2013 - Studies in History and Philosophy of Modern Physics 44 (1):20-21.
  44.  10
    The Structure and Interpretation of Quantum Mechanics.Richard Healey & R. I. G. Hughes - 1992 - Philosophical Review 101 (3):720.
  45.  29
    A Pragmatist View of the Metaphysics of Entanglement.Richard Healey - 2016 - Synthese:1-38.
    Quantum entanglement is widely believed to be a feature of physical reality with undoubted metaphysical implications. But Schrödinger introduced entanglement as a theoretical relation between representatives of the quantum states of two systems. Entanglement represents a physical relation only if quantum states are elements of physical reality. So arguments for metaphysical holism or nonseparability from entanglement rest on a questionable view of quantum theory. Assignment of entangled quantum states predicts experimentally confirmed violation of Bell inequalities. Can one use these experimental (...)
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  46. Quantum Realism: Naïveté is No Excuse.Richard Healey - 1979 - Synthese 42 (1):121 - 144.
    The work of Gleason and of Kochen and Specker has been thought to refute a naïve realist approach to quantum mechanics. The argument of this paper substantially bears out this conclusion. The assumptions required by their work are not arbitrary, but have sound theoretical justification. Moreover, if they are false, there seems no reason why their falsity should not be demonstrable in some sufficiently ingenious experiment. Suitably interpreted, the work of Bell and Wigner may be seen to yield independent arguments (...)
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  47.  44
    Chasing Quantum Causes: How Wild is the Goose?Richard Healey - 1992 - Philosophical Topics 20 (1):181-204.
  48.  8
    Quantum Decoherence in a Pragmatist View: Part I.Richard Healey - unknown
    The quantum theory of decoherence plays an important role in a pragmatist interpretation of quantum theory. It governs the descriptive content of claims about values of physical magnitudes and offers advice on when to use quantum probabilities as a guide to their truth. The content of a claim is to be understood in terms of its role in inferences. This promises a better treatment of meaning than that of Bohr. Quantum theory models physical systems with no mention of measurement: it (...)
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  49. Gauge Symmetry and the Theta Vacuum.Richard Healey - 2007 - In Mauricio Suarez, Mauro Dorato & Miklos Redei (eds.), EPSA Philosophical Issues in the Sciences · Launch of the European Philosophy of Science Association. Springer. pp. 105--116.
    According to conventional wisdom, local gauge symmetry is not a symmetry of nature, but an artifact of how our theories represent nature. But a study of the so-called theta-vacuum appears to refute this view. The ground state of a quantized non-Abelian Yang-Mills gauge theory is characterized by a real-valued, dimensionless parameter theta—a fundamental new constant of nature. The structure of this vacuum state is often said to arise from a degeneracy of the vacuum of the corresponding classical theory, which degeneracy (...)
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  50.  13
    Reply to a Comment on “Quantum Theory and the Limits of Objectivity”.Richard Healey - 2019 - Foundations of Physics 49 (8):816-819.
    In this short note I reply to criticisms of an argument in my paper that appear in comment. Baumann et al. raise one “main criticism” then go on to claim that the argument of Healey contains a series of problems. But their “main criticism” is not an objection to the argument and the problems are of their own making.
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