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  1. Against Quantum Indeterminacy.David Glick - 2017 - Thought: A Journal of Philosophy 6 (3):204-213.
    A growing literature is premised on the claim that quantum mechanics provides evidence for metaphysical indeterminacy. But does it? None of the currently fashionable realist interpretations involve fundamental indeterminacy and the ‘standard interpretation’, to the extent that it can be made out, doesn't require indeterminacy either.
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  • Emerging (In)Determinacy.Benjamin Eva - 2018 - Thought: A Journal of Philosophy 7 (1):31-39.
    In recent years, a number of authors have defended the coherence and philosophical utility of the notion of metaphysical indeterminacy. Concurrently, the idea that reality can be stratified into more or less fundamental ‘levels’ has gained significant traction in the literature. Here, I examine the relationship between these two notions. Specifically, I consider the question of what metaphysical determinacy at one level of reality tells us about the possibility of metaphysical determinacy at other more or less fundamental levels. Towards this (...)
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  • Quantum Indeterminacy and the Double-Slit Experiment.Claudio Calosi & Jessica Wilson - 2021 - Philosophical Studies 1:1-27.
    In Calosi and Wilson (Phil Studies 2019/2018), we argue that on many interpretations of quantum mechanics (QM), there is quantum mechanical indeterminacy (QMI), and that a determinable-based account of metaphysical indeterminacy (MI), as per Wilson 2013 and 2016, properly accommodates the full range of cases of QMI. Here we argue that this approach is superior to other treatments of QMI on offer, both realistic and deflationary, in providing the basis for an intelligible explanation of the interference patterns in the double-slit (...)
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  • Quantum Indeterminacy and the Double-slit Experiment.Claudio Calosi & Jessica Wilson - 2021 - Philosophical Studies 178 (10):3291-3317.
    In Calosi and Wilson (Phil Studies 2019/2018), we argue that on many interpretations of quantum mechanics (QM), there is quantum mechanical indeterminacy (QMI), and that a determinable-based account of metaphysical indeterminacy (MI), as per Wilson 2013 and 2016, properly accommodates the full range of cases of QMI. Here we argue that this approach is superior to other treatments of QMI on offer, both realistic and deflationary, in providing the basis for an intelligible explanation of the interference patterns in the double-slit (...)
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  • Wanted Dead or Alive: Two Attempts to Solve Schrodinger's Paradox.David Albert & Barry Loewer - 1990 - PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1990:277-285.
    We discuss two recent attempts two solve Schrodinger's cat paradox. One is the modal interpretation developed by Kochen, Healey, Dieks, and van Fraassen. It allows for an observable which pertains to a system to possess a value even when the system is not in an eigenstate of that observable. The other is a recent theory of the collapse of the wave function due to Ghirardi, Rimini, and Weber. It posits a dynamics which has the effect of collapsing the state of (...)
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  • Indeterminacy: Deep but Not Rock Bottom.Cristian Mariani - 2022 - Wiley: Analytic Philosophy 63 (1):62-71.
    Analytic Philosophy, Volume 63, Issue 1, Page 62-71, March 2022.
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  • Indeterminacy: Deep but Not Rock Bottom.Cristian Mariani - 2022 - Wiley: Analytic Philosophy 63 (1):62-71.
    Barnes (2014) has argued in this journal for the following conditional: If there is any metaphysical indeterminacy, this must be at the most fundamental level of reality. To argue for this claim, Barnes relies on two principles that I shall call bivalent completeness and determinate link. According to the former, a complete description is a bivalent assignment of truth values to every sentence. The determinate link, instead, establishes that the determination relation between levels of reality preserves determinacy from one level (...)
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  • Fundamental Indeterminacy.Elizabeth Barnes - 2014 - Analytic Philosophy 55 (4):339-362.
  • Metaphysical Indeterminacy, Properties, and Quantum Theory.Alisa Bokulich - 2014 - Res Philosophica 91 (3):449-475.
    It has frequently been suggested that quantum mechanics may provide a genuine case of ontic vagueness or metaphysical indeterminacy. However, discussions of quantum theory in the vagueness literature are often cursory and, as I shall argue, have in some respects been misguided. Hitherto much of the debate over ontic vagueness and quantum theory has centered on the “indeterminate identity” construal of ontic vagueness, and whether the quantum phenomenon of entanglement produces particles whose identity is indeterminate. I argue that this way (...)
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  • Are GRW Tails as Bad as They Say?Alberto Cordero - 1999 - Philosophy of Science 66 (3):71.
    GRW models of the physical world are criticized in the literature for involving wave function "tails" that allegedly create fatal interpretive problems and even compromise standard arithmetic. I find such objections both unfair and misguided. But not all is well with the GRW approach. One complaint I articulate in this paper does not have to do with tails as such but with the specific way in which past physical structures linger forever in the total GRW wave function. By pushing the (...)
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  • Quantum Mechanics and Ordinary Language: The Fuzzy Link.Peter J. Lewis - 2003 - Philosophy of Science 70 (5):1437-1446.
    It is widely acknowledged that the link between quantum language and ordinary language must be "fuzzier" than the traditional eigenstate-eigenvalue link. In the context of spontaneous-collapse theories, Albert and Loewer argue that the form of this fuzzy link is a matter of convention, and can be freely chosen to minimize anomalies for those theories. I defend the position that the form of the link is empirical, and could be such as to render collapse theories idle. This means that defenders of (...)
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  • Deep Metaphysical Indeterminacy.Bradford Skow - 2010 - Philosophical Quarterly 60 (241):851 - 858.
    A recent theory of metaphysical indeterminacy says that metaphysical indeterminacy is multiple actuality: there is metaphysical indeterminacy when there are many 'complete precisifications of reality'. But it is possible for there to be metaphysical indeterminacy even when it is impossible to precisify reality completely. The orthodox interpretation of quantum mechanics illustrates this possibility. So this theory of metaphysical indeterminacy is not adequate.
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  • Emergent Quantum Indeterminacy.Cristian Mariani - 2021 - Ratio 34 (3):183-192.
    Many features of quantum mechanics (QM) suggest that, at the microscopic level, objects sometimes fail to determinately instantiate their properties. In recent years, many have argued that this phenomenon indicates the existence of an ontological kind of indeterminacy, often called metaphysical indeterminacy, which is supposed to affect the ontology of QM. As insisted by Glick ('Against Quantum Indeterminacy), however, once we look at the major realist approaches to QM we learn that the indeterminacy disappears from the description of the world (...)
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  • Plural Metaphysical Supervaluationism.Robert Michels, Cristian Mariani & Giuliano Torrengo - 2021 - Inquiry: An Interdisciplinary Journal of Philosophy.
    It has been argued that quantum mechanics forces us to accept the existence of metaphysical, mind-independent indeterminacy. In this paper we provide an interpretation of the indeterminacy involved in the quantum phenomena in terms of a view that we call Plural Metaphysical Supervaluationism. According to it, quantum indeterminacy is captured in terms of an irreducibly plural relation between the actual world and various misrepresentations of it.
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  • Quantum Indeterminacy.Claudio Calosi & Cristian Mariani - 2021 - Philosophy Compass 16 (4):e12731.
    This paper explores quantum indeterminacy, as it is operative in the failure of value‐definiteness for quantum observables. It first addresses questions about its existence, its nature, and its relations to extant quantum interpretations. Then, it provides a critical discussions of the main accounts of quantum indeterminacy.
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  • GRW: A Case Study in Quantum Ontology.Peter J. Lewis - 2006 - Philosophy Compass 1 (2):224–244.
  • Particles, Particle Labels, and Quanta: The Toll of Unacknowledged Metaphysics. [REVIEW]Michael Redhead & Paul Teller - 1991 - Foundations of Physics 21 (1):43-62.
    The practice of describing multiparticle quantum systems in terms of labeled particles indicates that we think of quantum entities as individuatable. The labels, together with particle indistinguishability, create the need for symmetrization or antisymmetrization (or, in principle, higher-order symmetries), which in turn results in “surplus formal structure” in the formalism, formal structure which corresponds to nothing in the real world. We argue that these facts show quanta to be unindividuatable entities, things in principle incapable of supporting labels, and so things (...)
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  • Four Tails Problems for Dynamical Collapse Theories.Kelvin J. McQueen - 2015 - Studies in the History and Philosophy of Modern Physics 49:10-18.
    The primary quantum mechanical equation of motion entails that measurements typically do not have determinate outcomes, but result in superpositions of all possible outcomes. Dynamical collapse theories (e.g. GRW) supplement this equation with a stochastic Gaussian collapse function, intended to collapse the superposition of outcomes into one outcome. But the Gaussian collapses are imperfect in a way that leaves the superpositions intact. This is the tails problem. There are several ways of making this problem more precise. But many authors dismiss (...)
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  • Thinking Outside the Toolbox: Towards a More Productive Engagement Between Metaphysics and Philosophy of Physics.Steven French & Kerry McKenzie - 2012 - European Journal of Analytic Philosophy 8 (1):42-59.
    he relationship between metaphysics and science has recently become the focus of increased attention. Ladyman and Ross, in particular, have accused even naturalistically inclined metaphysicians of pursuing little more than the philosophy of A-level chemistry and have suggested that analytic metaphysics should simply be discontinued. In contrast, we shall argue, first of all, that even metaphysics that is disengaged from modern science may offer a set of resources that can be appropriated by philosophers of physics in order to set physics (...)
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  • Quantum Theory and Determinism.Lev Vaidman - unknown
    Historically, appearance of the quantum theory led to a prevailing view that Nature is indeterministic. The arguments for the indeterminism and proposals for indeterministic and deterministic approaches are reviewed. These include collapse theories, Bohmian Mechanics and the many-worlds interpretation. It is argued that ontic interpretations of the quantum wave function provide simpler and clearer physical explanation and that the many-worlds interpretation is the most attractive since it provides a deterministic and local theory for our physical Universe explaining the illusion of (...)
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  • Gappy, Glutty, Glappy.Claudio Calosi - 2021 - Synthese 199 (3-4):11305-11321.
    According to the Determinable Based Account of metaphysical indeterminacy, there is MI when there is an indeterminate state of affairs, roughly a state of affairs in which a constituent object x has a determinable property but fails to have a unique determinate of that determinable. There are different ways in which x might have a determinable but no unique determinate: x has no determinate—gappy MI, or x has more than one determinate—glutty MI. Talk of determinables and determinates is usually constructed (...)
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  • Quantum Mechanics and Metaphysical Indeterminacy.George Darby - 2010 - Australasian Journal of Philosophy 88 (2):227-245.
    There has been recent interest in formulating theories of non-representational indeterminacy. The aim of this paper is to clarify the relevance of quantum mechanics to this project. Quantum-mechanical examples of vague objects have been offered by various authors, displaying indeterminate identity, in the face of the famous Evans argument that such an idea is incoherent. It has also been suggested that the quantum-mechanical treatment of state-dependent properties exhibits metaphysical indeterminacy. In both cases it is important to consider the details of (...)
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  • Statistics, Symmetry, and the Conventionality of Indistinguishability in Quantum Mechanics.Darrin W. Belousek - 2000 - Foundations of Physics 30 (1):1-34.
    The question to be addressed is, In what sense and to what extent do quantum statistics for, and the standard formal quantum-mechanical description of, systems of many identical particles entail that identical quantum particles are indistinguishable? This paper argues that whether or not we consider identical quantum particles as indistinguishable is a matter of theory choice underdetermined by logic and experiment.
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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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  • Can There Be Vague Objects?Gareth Evans - 1978 - Analysis 38 (4):208.
  • A Determinable-Based Account of Metaphysical Indeterminacy.Jessica M. Wilson - 2013 - Inquiry: An Interdisciplinary Journal of Philosophy 56 (4):359-385.
    ABSTRACT Many phenomena appear to be indeterminate, including material macro-object boundaries and certain open future claims. Here I provide an account of indeterminacy in metaphysical, rather than semantic or epistemic, terms. Previous accounts of metaphysical indeterminacy have typically taken this to involve its being indeterminate which of various determinate states of affairs obtain. On my alternative account, MI involves its being determinate that an indeterminate state of affairs obtains. I more specifically suggest that MI involves an object's having a determinable (...)
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  • Quantum Relational Indeterminacy.Claudio Calosi & Cristian Mariani - 2020 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 71:158-169.
  • Predictions and Primitive Ontology in Quantum Foundations: A Study of Examples.Valia Allori, Sheldon Goldstein, Roderich Tumulka & Nino Zanghì - 2014 - British Journal for the Philosophy of Science 65 (2):323-352.
    A major disagreement between different views about the foundations of quantum mechanics concerns whether for a theory to be intelligible as a fundamental physical theory it must involve a ‘primitive ontology’ (PO), i.e. variables describing the distribution of matter in four-dimensional space–time. In this article, we illustrate the value of having a PO. We do so by focusing on the role that the PO plays for extracting predictions from a given theory and discuss valid and invalid derivations of predictions. To (...)
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  • On the Common Structure of Bohmian Mechanics and the Ghirardi–Rimini–Weber Theory Dedicated to GianCarlo Ghirardi on the Occasion of His 70th Birthday.Valia Allori, Sheldon Goldstein, Roderich Tumulka & Nino Zanghì - 2008 - British Journal for the Philosophy of Science 59 (3):353 - 389.
    Bohmian mechanics and the Ghirardi-Rimini-Weber theory provide opposite resolutions of the quantum measurement problem: the former postulates additional variables (the particle positions) besides the wave function, whereas the latter implements spontaneous collapses of the wave function by a nonlinear and stochastic modification of Schrödinger's equation. Still, both theories, when understood appropriately, share the following structure: They are ultimately not about wave functions but about 'matter' moving in space, represented by either particle trajectories, fields on space-time, or a discrete set of (...)
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  • Discussion. Counting Marbles with 'Accessible' Mass Density: A Reply to Bassi and Ghirardi.R. Clifton & B. Monton - 2000 - British Journal for the Philosophy of Science 51 (1):155-164.
  • Quantum Mechanics, Orthogonality, and Counting.Peter J. Lewis - 1997 - British Journal for the Philosophy of Science 48 (3):313-328.
    In quantum mechanics it is usually assumed that mutually exclusives states of affairs must be represented by orthogonal vectors. Recent attempts to solve the measurement problem, most notably the GRW theory, require the relaxation of this assumption. It is shown that a consequence of relaxing this assumption is that arithmatic does not apply to ordinary macroscopic objects. It is argued that such a radical move is unwarranted given the current state of understanding of the foundations of quantum mechanics.
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  • Counting Marbles: Reply to Clifton and Monton.Angelo Bassi & GianCarlo Ghirardi - 2001 - British Journal for the Philosophy of Science 52 (1):125-130.
  • Do Dynamical Reduction Models Imply That Arithmetic Does Not Apply to Ordinary Macroscopic Objects?G. C. Ghirardi & A. Bassi - 1999 - British Journal for the Philosophy of Science 50 (1):49-64.
    We analyse a recent paper in which an alleged devastating criticism of the so called GRW proposal to account for the objectification of the properties of macroscopic systems has been presented and we show that the author has not taken into account the precise implications of the GRW theory. This fact makes his conclusions basically wrong. We also perform a survey of measurement theory aimed to focus better on the physical and the conceptual aspects of the so-called macro-objectification problem.
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  • Four Strategies for Dealing with the Counting Anomaly in Spontaneous Collapse Theories of Quantum Mechanics.Peter J. Lewis - 2003 - International Studies in the Philosophy of Science 17 (2):137 – 142.
    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 of response, based (...)
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  • The Problem of Ontology for Spontaneous Collapse Theories.Bradley Monton - 2004 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 35 (3):407-421.
    The question of how to interpret spontaneous collapse theories of quantum mechanics is an open one. One issue involves what link one should use to go from wave function talk to talk of ordinary macroscopic objects. Another issue involves whether that link should be taken ontologically seriously. In this paper, I ague that the link should be taken ontologically seriously; I argue against an ontology consisting solely of the wave function. I then consider three possible links: the fuzzy link, the (...)
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  • Whence the Eigenstate–Eigenvalue Link?Marian J. R. Gilton - 2016 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 55:92-100.
  • Spin as a Determinable.Johanna Wolff - 2015 - Topoi 34 (2):379-386.
    In this paper I aim to answer two questions: Can spin be treated as a determinable? Can a treatment of spin as a determinable be used to understand quantum indeterminacy? In response to the first question I show that the relations among spin number, spin components and spin values cannot be captured by a single determination relation; instead we need to look at spin number and spin value separately. In response to the second question I discuss three ways in which (...)
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  • GRW and the Tails Problem.Peter Lewis - 1995 - Topoi 14 (1):23-33.
    The GRW theory is a recent attempt to solve the measurement problem in quantum mechanics, and the tails problem is a well-known and potentially fatal criticism of the GRW theory. The first half of the paper is an exposition of the measurement problem, the GRW theory, and the tails problem. In the remainder of the paper, two methods of dealing with the tails problem are considered: first, altering the GRW theory so as to avoid the tails problem; and second, denying (...)
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  • Describing the Macroscopic World: Closing the Circle Within the Dynamical Reduction Program. [REVIEW]G. C. Ghirardi, R. Grassi & F. Benatti - 1995 - Foundations of Physics 25 (1):5-38.
    With reference to recently proposed theoretical models accounting for reduction in terms of a unified dynamics governing all physical processes, we analyze the problem of working out a worldview accommodating our knowledge about natural phenomena. We stress the relevant conceptual differences between the considered models and standard quantum mechanics. In spite of the fact that both theories describe systems within a genuine Hilbert space framework, the peculiar features of the spontaneous reduction models limit drastically the states which are dynamically stable. (...)
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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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  • Desiderata for a Modified Quantum Dynamics.Abner Shimony - 1990 - PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1990:49 - 59.
    If quantum mechanics is interpreted as an objective, complete, physical theory, applying to macroscopic as well as microscopic systems, then the linearity of quantum dynamics gives rise to the measurement problem and related problems, which cannot be solved without modifying the dynamics. Eight desiderata are proposed for a reasonable modified theory. They favor a stochastic modification rather than a deterministic non-linear one, but the spontaneous localization theories of Ghirardi et al. and Pearle are criticized. The intermittent fluorescence of a trapped (...)
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  • A Relativistic Version of the Ghirardi–Rimini–Weber Model.Roderich Tumulka - 2006 - Journal of Statistical Physics 125:821-840.