Results for 'gravity'

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  1.  39
    Quantum Gravity.Carlo Rovelli - 2007 - Cambridge University Press.
    Quantum gravity poses the problem of merging quantum mechanics and general relativity, the two great conceptual revolutions in the physics of the twentieth century. The loop and spinfoam approach, presented in this book, is one of the leading research programs in the field. The first part of the book discusses the reformulation of the basis of classical and quantum Hamiltonian physics required by general relativity. The second part covers the basic technical research directions. Appendices include a detailed history of (...)
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  2.  45
    Gravity and Grace.Simone Weil - 1952 - Routledge.
    Gravity and Grace was the first ever publication by the remarkable thinker and activist, Simone Weil. In it Gustave Thibon, the priest to whom she had entrusted her notebooks before her untimely death, compiled in one remarkable volume a compendium of her writings that have become a source of spiritual guidance and wisdom for countless individuals.
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  3. Quantum Gravity, Timelessness, and the Contents of Thought.David Braddon-Mitchell & Kristie Miller - 2019 - Philosophical Studies 176 (7):1807-1829.
    A number of recent theories of quantum gravity lack a one-dimensional structure of ordered temporal instants. Instead, according to many of these views, our world is either best represented as a single three-dimensional object, or as a configuration space composed of such three-dimensional objects, none of which bear temporal relations to one another. Such theories will be empirically self-refuting unless they can accommodate the existence of conscious beings capable of representation. For if representation itself is impossible in a timeless (...)
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  4. Spacetime Emergence in Quantum Gravity: Functionalism and the Hard Problem.Baptiste Le Bihan - 2021 - Synthese 199 (2):371–393.
    Spacetime functionalism is the view that spacetime is a functional structure implemented by a more fundamental ontology. Lam and Wüthrich have recently argued that spacetime functionalism helps to solve the epistemological problem of empirical coherence in quantum gravity and suggested that it also (dis)solves the hard problem of spacetime, namely the problem of offering a picture consistent with the emergence of spacetime from a non-spatio-temporal structure. First, I will deny that spacetime functionalism solves the hard problem by showing that (...)
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  5.  1
    Gravity and Grace.Simone Weil - 1952 - Routledge.
    _Gravity and Grace_ shows Weil's religious thoughts and ideas, drawn from many sources - Christian, Jewish, Indian, Greek and Hindu - and focusing on suffering and redemption. It brings the reader face to face with the profoundest levels of existence as Weil explores the relationship of the human condition to the realm of the transcendent.
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  6. Gravity and Newton’s Substance Counting Problem.Hylarie Kochiras - 2009 - Studies in History and Philosophy of Science Part A 40 (3):267-280.
    A striking feature of Newton’s thought is the very broad reach of his empiricism, potentially extending even to immaterial substances, including God, minds, and should one exist, a non-perceiving immaterial medium. Yet Newton is also drawn to certain metaphysical principles—most notably the principle that matter cannot act where it is not—and this second, rationalist feature of his thought is most pronounced in his struggle to discover ‘gravity’s cause’. The causal problem remains vexing, for he neither invokes primary causation, nor (...)
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  7.  98
    Quantum Gravity: A Primer for Philosophers.Dean Rickles - unknown
    ‘Quantum Gravity’ does not denote any existing theory: the field of quantum gravity is very much a ‘work in progress’. As you will see in this chapter, there are multiple lines of attack each with the same core goal: to find a theory that unifies, in some sense, general relativity (Einstein’s classical field theory of gravitation) and quantum field theory (the theoretical framework through which we understand the behaviour of particles in non-gravitational fields). Quantum field theory and general (...)
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  8. String Theory, Loop Quantum Gravity and Eternalism.Baptiste Le Bihan - 2020 - European Journal for Philosophy of Science 10:17.
    Eternalism, the view that what we regard locally as being located in the past, the present and the future equally exists, is the best ontological account of temporal existence in line with special and general relativity. However, special and general relativity are not fundamental theories and several research programs aim at finding a more fundamental theory of quantum gravity weaving together all we know from relativistic physics and quantum physics. Interestingly, some of these approaches assert that time is not (...)
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  9. Quantum Gravity.Claus Kiefer - 2004 - Oxford University Press UK.
    The search for a quantum theory of the gravitational field is one of the great open problems in theoretical physics. This book presents a self-contained discussion of the concepts, methods and applications that can be expected in such a theory. The two main approaches to its construction - the direct quantisation of Einstein's general theory of relativity and string theory - are covered. Whereas the first attempts to construct a viable theory for the gravitational field alone, string theory assumes that (...)
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  10.  28
    Quantum Gravity: A Dogma of Unification?Kian Salimkhani - 2018 - In Alexander Christian, David Hommen, Nina Retzlaff & Gerhard Schurz (eds.), Philosophy of Science. European Studies in Philosophy of Science, vol 9. Cham: Springer. pp. 23-41.
    The quest for a theory of quantum gravity is usually understood to be driven by philosophical assumptions external to physics proper. It is suspected that specifically approaches in the context of particle physics are rather based on metaphysical premises than experimental data or physical arguments. I disagree. In this paper, I argue that the quest for a theory of quantum gravity sets an important example of physics’ internal unificatory practice. It is exactly Weinberg’s and others’ particle physics stance (...)
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  11. Quantum Gravity, Timelessness, and the Folk Concept of Time.Andrew J. Latham & Kristie Miller - 2020 - Synthese 198 (10):9453-9478.
    What it would take to vindicate folk temporal error theory? This question is significant against a backdrop of new views in quantum gravity—so-called timeless physical theories—that claim to eliminate time by eliminating a one-dimensional substructure of ordered temporal instants. Ought we to conclude that if these views are correct, nothing satisfies the folk concept of time and hence that folk temporal error theory is true? In light of evidence we gathered, we argue that physical theories that entirely eliminate an (...)
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  12.  9
    Gravity and Grace.Simone Weil - 1952 - New York: Putnam.
    This is a book that no one with a serious interest in the spiritual life can afford to be without.
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  13. Gravity, Entropy, and Cosmology: In Search of Clarity.David Wallace - 2010 - British Journal for the Philosophy of Science 61 (3):513-540.
    I discuss the statistical mechanics of gravitating systems and in particular its cosmological implications, and argue that many conventional views on this subject in the foundations of statistical mechanics embody significant confusion; I attempt to provide a clearer and more accurate account. In particular, I observe that (i) the role of gravity in entropy calculations must be distinguished from the entropy of gravity, that (ii) although gravitational collapse is entropy-increasing, this is not usually because the collapsing matter itself (...)
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  14.  26
    Gravity and Newton’s Substance Counting Problem.Hylarie Kochiras - 2009 - Studies in History and Philosophy of Science Part A 40 (3):267-280.
    A striking feature of Newton’s thought is the very broad reach of his empiricism, potentially extending even to immaterial substances, including God, minds, and should one exist, a non-perceiving immaterial medium. Yet Newton is also drawn to certain metaphysical principles—most notably the principle that matter cannot act where it is not—and this second, rationalist feature of his thought is most pronounced in his struggle to discover ‘gravity’s cause’. The causal problem remains vexing, for he neither invokes primary causation, nor (...)
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  15.  67
    Quantum Gravity and the Nature of Space and Time.Keizo Matsubara - 2017 - Philosophy Compass 12 (3):e12405.
    This is a nontechnical overview of how various approaches to quantum gravity suggest modifications to the way we conceptualize space and time. A theory of quantum gravity is needed to reconcile quantum physics with general relativity, our best theory for gravity. The most popular approaches to quantum gravity are string theory and loop quantum gravity. So far, no approach has been empirically successful, and there is no commonly accepted theory. Thus, the conclusions presented here are (...)
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  16. Gravity and Grace.Simone Weil - 1953 - Philosophy 28 (106):276-278.
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  17. Quantum Gravity and Phenomenological Philosophy.Steven M. Rosen - 2008 - Foundations of Physics 38 (6):556-582.
    The central thesis of this paper is that contemporary theoretical physics is grounded in philosophical presuppositions that make it difficult to effectively address the problems of subject-object interaction and discontinuity inherent to quantum gravity. The core objectivist assumption implicit in relativity theory and quantum mechanics is uncovered and we see that, in string theory, this assumption leads into contradiction. To address this challenge, a new philosophical foundation is proposed based on the phenomenology of Maurice Merleau-Ponty and Martin Heidegger. Then, (...)
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  18. Quantum Gravity Meets Structuralism: Interweaving Relations in the Foundations of Physics.Dean Rickles & Steven French - 2006 - In Dean Rickles, Steven French & Juha T. Saatsi (eds.), The Structural Foundations of Quantum Gravity. Oxford University Press. pp. 1--39.
     
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  19.  57
    Gravity’s Cause and Substance Counting: Contextualizing the Problems.Hylarie Kochiras - 2011 - Studies in History and Philosophy of Science Part A 42 (1):167-184.
    This paper considers Newton’s position on gravity’s cause, both conceptually and historically. With respect to the historical question, I argue that while Newton entertained various hypotheses about gravity’s cause, he never endorsed any of them, and in particular, his lack of confidence in the hypothesis of robust and unmediated distant action by matter is explained by an inclination toward certain metaphysical principles. The conceptual problem about gravity’s cause, which I identified earlier along with a deeper problem about (...)
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  20.  60
    Gravity and Gauge.Nicholas J. Teh - 2016 - British Journal for the Philosophy of Science 67 (2):497-530.
    Philosophers of physics and physicists have long been intrigued by the analogies and disanalogies between gravitational theories and gauge theories. Indeed, repeated attempts to collapse these disanalogies have made us acutely aware that there are fairly general obstacles to doing so. Nonetheless, there is a special case space-time dimensions) in which gravity is often claimed to be identical to a gauge theory. I subject this claim to philosophical scrutiny in this article. In particular, I analyse how the standard disanalogies (...)
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  21.  21
    Gravity’s Cause and Substance Counting: Contextualizing the Problems.Hylarie Kochiras - 2011 - Studies in History and Philosophy of Science Part A 42 (1):167-184.
    This paper considers Newton’s position on gravity’s cause, both conceptually and historically. With respect to the historical question, I argue that while Newton entertained various hypotheses about gravity’s cause, he never endorsed any of them, and in particular, his lack of confidence in the hypothesis of robust and unmediated distant action by matter is explained by an inclination toward certain metaphysical principles. The conceptual problem about gravity’s cause, which I identified earlier along with a deeper problem about (...)
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  22.  51
    Nonquantum Gravity.Stephen Boughn - 2009 - Foundations of Physics 39 (4):331-351.
    One of the great challenges for 21st century physics is to quantize gravity and generate a theory that will unify gravity with the other three fundamental forces of nature. This paper takes the (heretical) point of view that gravity may be an inherently classical, i.e., nonquantum, phenomenon and investigates the experimental consequences of such a conjecture. At present there is no experimental evidence of the quantum nature of gravity and the likelihood of definitive tests in the (...)
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  23.  2
    Quantum Gravity: A Dogma of Unification?Kian Salimkhani - 2018 - In Antonio Piccolomini D’Aragona, Martin Carrier, Roger Deulofeu, Axel Gelfert, Jens Harbecke, Paul Hoyningen-Huene, Lara Huber, Peter Hucklenbroich, Ludger Jansen, Elizaveta Kostrova, Keizo Matsubara, Anne Sophie Meincke, Andrea Reichenberger, Kian Salimkhani & Javier Suárez (eds.), Philosophy of Science: Between the Natural Sciences, the Social Sciences, and the Humanities. Springer Verlag. pp. 23-41.
    The quest for a theory of quantum gravity is usually understood to be driven by philosophical assumptions external to physics proper. It is suspected that specifically approaches in the context of particle physics are rather based on metaphysical premises than experimental data or physical arguments. I disagree. In this paper, I argue that the quest for a theory of quantum gravity sets an important example of physics’ internal unificatory practice. It is exactly Weinberg’s and others’ particle physics stance (...)
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  24. Quantum Gravity and Taoist Cosmology: Exploring the Ancient Origins of Phenomenological String Theory.Steven M. Rosen - 2017 - Progress in Biophysics and Molecular Biology 131:34-60.
    In the author’s previous contribution to this journal (Rosen 2015), a phenomenological string theory was proposed based on qualitative topology and hypercomplex numbers. The current paper takes this further by delving into the ancient Chinese origin of phenomenological string theory. First, we discover a connection between the Klein bottle, which is crucial to the theory, and the Ho-t’u, a Chinese number archetype central to Taoist cosmology. The two structures are seen to mirror each other in expressing the psychophysical (phenomenological) action (...)
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  25.  92
    Gauge Gravity and the Unification of Natural Forces.Chuang Liu - 2001 - International Studies in the Philosophy of Science 17 (2):143 – 159.
    Physics seems to tell us that there are four fundamental force-fields in nature: the gravitational, the electromagnetic, the weak, and the strong (or interactions). But it also seems to tell us that gravity cannot possibly be a force-field, in the same sense as the other three are. And yet the search for a grand unification of all four force-fields is today one of the hottest pursuits. Is this the result of a simple confusion? This article aims at clarifying this (...)
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  26. The Past Hypothesis Meets Gravity.Craig Callender - 2010 - In Andreas Hüttemann & Gerhard Ernst (eds.), Time, Chance and Reduction. Cambridge, UK: Cambridge University Press. pp. 34-58.
    The Past Hypothesis is the claim that the Boltzmann entropy of the universe was extremely low when the universe began. Can we make sense of this claim when *classical* gravitation is included in the system? I first show that the standard rationale for not worrying about gravity is too quick. If the paper does nothing else, my hope is that it gets the problems induced by gravity the attention they deserve in the foundations of physics. I then try (...)
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  27.  23
    Gravity and Magnetic Constraints on the Jurassic Opening of the Oceanic Gulf of Mexico and the Location and Tectonic History of the Western Main Transform Fault Along the Eastern Continental Margin of Mexico.Luan C. Nguyen & Paul Mann - 2016 - Interpretation: SEG 4 (1):SC23-SC33.
    Although the Gulf of Mexico has been the subject of geophysical and geologic studies for several decades, its crustal structures and opening kinematics remain poorly understood largely because of the difficulty in imaging the deeper basinal structure beneath its thick sedimentary and evaporitic layers. We have used gravity and magnetic data combined with seismic reflection and refraction data to better understand the crustal structure and basin opening kinematics. We have focused on the 700-km-long Jurassic continent/ocean transform fault that accommodated (...)
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  28.  41
    Mongrel Gravity.James Mattingly - 2009 - Erkenntnis 70 (3):379-395.
    It was recognized almost from the original formulation of general relativity that the theory was incomplete because it dealt only with classical, rather than quantum, matter. What must be done in order to complete the theory has been a subject of considerable debate over the last century, and here I just mention a few of the various options that have been suggested for a quantum theory of gravity. The aim of what follows is twofold. First, I address worries about (...)
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  29.  58
    Dualities and Emergent Gravity: Gauge/Gravity Duality.Sebastian de Haro - 2017 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 59:109-125.
    In this paper I develop a framework for relating dualities and emergence: two notions that are close to each other but also exclude one another. I adopt the conception of duality as 'isomorphism', from the physics literature, cashing it out in terms of three conditions. These three conditions prompt two conceptually different ways in which a duality can be modified to make room for emergence; and I argue that this exhausts the possibilities for combining dualities and emergence. I apply this (...)
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  30. Why Gravity is Not an Entropic Force.Shan Gao - 2010
    The remarkable connections between gravity and thermodynamics seem to imply that gravity is not fundamental but emergent, and in particular, as Verlinde suggested, gravity is probably an entropic force. In this paper, we will argue that the idea of gravity as an entropic force is debatable. It is shown that there is no convincing analogy between gravity and entropic force in Verlinde’s example. Neither holographic screen nor test particle satisfies all requirements for the existence of (...)
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  31. Gravity as Entanglement. Entanglement as Gravity.Vasil Penchev - 2020 - Logic and Philosophy of Mathematics eJournal (Elsevier: SSRN) 12 (30):1-23.
    A generalized and unifying viewpoint to both general relativity and quantum mechanics and information is investigated. It may be described as a generaliztion of the concept of reference frame from mechanics to thermodynamics, or from a reference frame linked to an element of a system, and thus, within it, to another reference frame linked to the whole of the system or to any of other similar systems, and thus, out of it. Furthermore, the former is the viewpoint of general relativity, (...)
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  32. Gravity and Gauge Theory.Steven Weinstein - 1999 - Philosophy of Science 66 (3):155.
    Gauge theories are theories that are invariant under a characteristic group of "gauge" transformations. General relativity is invariant under transformations of the diffeomorphism group. This has prompted many philosophers and physicists to treat general relativity as a gauge theory, and diffeomorphisms as gauge transformations. I argue that this approach is misguided.
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  33. Gravity and Spatial Geometry‘.David Malament - unknown
    Philosophers of science have written at great length about the geometric structure of physical space. But they have devoted their attention primarily to the question of the epistemic status of our attributions of geometric structure. They have debated whether our attributions are a priori truths, empirical discoveries, or, in a special sense, matters of stipulation or convention. lt is the goal of this paper to explore a quite different issue the role played by assumptions of spatial geometry within physical theory, (...)
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  34.  46
    Gravity and State Vector Reduction.Roger Penrose - 1986 - In Roger Penrose & C. J. Isham (eds.), Quantum Concepts in Space and Time. New York ;Oxford University Press. pp. 1--129.
  35.  29
    Quantum Gravity as a Fermi Liquid.Stephon H. S. Alexander & Gianluca Calcagni - 2008 - Foundations of Physics 38 (12):1148-1184.
    We present a reformulation of loop quantum gravity with a cosmological constant and no matter as a Fermi-liquid theory. When the topological sector is deformed and large gauge symmetry is broken, we show that the Chern–Simons state reduces to Jacobson’s degenerate sector describing 1+1 dimensional propagating fermions with nonlocal interactions. The Hamiltonian admits a dual description which we realize in the simple BCS model of superconductivity. On one hand, Cooper pairs are interpreted as wormhole correlations at the de Sitter (...)
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  36.  49
    Quantum Gravity.Steven Weinstein - 2008 - Stanford Encyclopedia of Philosophy.
  37.  21
    Gravity Constraints Drive Biological Systems Toward Specific Organization Patterns.Mariano Bizzarri, Maria Grazia Masiello, Alessandro Giuliani & Alessandra Cucina - 2018 - Bioessays 40 (1):1700138.
    Different cell lineages growing in microgravity undergo a spontaneous transition leading to the emergence of two distinct phenotypes. By returning these populations in a normal gravitational field, the two phenotypes collapse, recovering their original configuration. In this review, we hypothesize that, once the gravitational constraint is removed, the system freely explores its phenotypic space, while, when in a gravitational field, cells are “constrained” to adopt only one favored configuration. We suggest that the genome allows for a wide range of “possibilities” (...)
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  38.  34
    Does Gravity Induce Wavefunction Collapse? An Examination of Penrose's Conjecture.Shan Gao - 2013 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 44 (2):148-151.
    According to Penrose, the fundamental conflict between the superposition principle of quantum mechanics and the principle of general covariance of general relativity entails the existence of wavefunction collapse, e.g. a quantum superposition of two different space–time geometries will collapse to one of them due to the ill-definedness of the time-translation operator for the superposition. In this paper, we argue that Penrose's conjecture on gravity's role in wavefunction collapse is debatable. First of all, it is still a controversial issue what (...)
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  39.  71
    Quantum Gravity on a Quantum Computer?Achim Kempf - 2014 - Foundations of Physics 44 (5):472-482.
    EPR-type measurements on spatially separated entangled spin qubits allow one, in principle, to detect curvature. Also the entanglement of the vacuum state is affected by curvature. Here, we ask if the curvature of spacetime can be expressed entirely in terms of the spatial entanglement structure of the vacuum. This would open up the prospect that quantum gravity could be simulated on a quantum computer and that quantum information techniques could be fully employed in the study of quantum gravity.
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  40. Presentism and Quantum Gravity.Bradley Monton - 2001 - In Dennis Dieks (ed.), The Ontology of Spacetime.
    There is a philosophical tradition of arguing against presentism, the thesis that only presently existing things exist, on the basis of its incompatibility with fundamental physics. I grant that presentism is incompatible with special and general relativity, but argue that presentism is not incompatible with quantum gravity, because there are some theories of quantum gravity that utilize a fixed foliation of spacetime. I reply to various objections to this defense of presentism, and point out a flaw in Gödel's (...)
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  41.  73
    Time in Quantum Gravity.Nick Huggett, Tiziana Vistarini & Christian Wuthrich - 2012 - .
    Quantum gravity--the marriage of quantum physics with general relativity--is bound to contain deep and important lessons for the nature of physical time. Some of these lessons shall be canvassed here, particularly as they arise from quantum general relativity and string theory and related approaches. Of particular interest is the question of which of the intuitive aspects of time will turn out to be fundamental, and which 'emergent' in some sense.
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  42. Quantum Gravity and Mereology: Not So Simple.Sam Baron & Baptiste Le Bihan - 2022 - Philosophical Quarterly 72 (1):19-40.
    A number of philosophers have argued in favour of extended simples on the grounds that they are needed by fundamental physics. The arguments typically appeal to theories of quantum gravity. To date, the argument in favour of extended simples has ignored the fact that the very existence of spacetime is put under pressure by quantum gravity. We thus consider the case for extended simples in the context of different views on the existence of spacetime. We show that the (...)
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  43. Gravity and Inertia in a Machian Framework.Julian B. Barbour & Bruno Bertotti - 1977 - Nuovo Cimento 38:1--27.
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  44.  80
    Pre-Socratic Quantum Gravity.Gordon Belot & John Earman - 2001 - In .
    Physicists who work on canonical quantum gravity will sometimes remark that the general covariance of general relativity is responsible for many of the thorniest technical and conceptual problems in their field.1 In particular, it is sometimes alleged that one can trace to this single source a variety of deep puzzles about the nature of time in quantum gravity, deep disagreements surrounding the notion of ‘observable’ in classical and quantum gravity, and deep questions about the nature of the (...)
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  45. Have we Lost Spacetime on the Way? Narrowing the Gap between General Relativity and Quantum Gravity.Baptiste Le Bihan & Niels Siegbert Linnemann - 2019 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 65:112-121.
    Important features of space and time are taken to be missing in quantum gravity, allegedly requiring an explanation of the emergence of spacetime from non-spatio-temporal theories. In this paper, we argue that the explanatory gap between general relativity and non-spatio- temporal quantum gravity theories might significantly be reduced with two moves. First, we point out that spacetime is already partially missing in the context of general relativity when understood from a dynamical perspective. Second, we argue that most approaches (...)
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  46.  98
    Quantum Gravity: Has Spacetime Quantum Properties?Reiner Hedrich - unknown
    The conceptual incompatibility between General Relativity and Quantum Mechanics is generally seen as a sufficient motivation for the development of a theory of Quantum Gravity. If - so a typical argumentation - Quantum Mechanics gives a universally valid basis for the description of the dynamical behavior of all natural systems, then the gravitational field should have quantum properties, like all other fundamental interaction fields. And, if General Relativity can be seen as an adequate description of the classical aspects of (...)
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  47.  51
    Gravity-Related Wave Function Collapse: Is Superfluid He Exceptional?Lajos Diósi - 2014 - Foundations of Physics 44 (5):483-491.
    The gravity-related model of spontaneous wave function collapse, a longtime hypothesis, damps the massive Schrödinger Cat states in quantum theory. We extend the hypothesis and assume that spontaneous wave function collapses are responsible for the emergence of Newton interaction. Superfluid helium would then show significant and testable gravitational anomalies.
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  48. Gravity as Archimedes? Thrust and a Bifurcation in That Theory.Mayeul Arminjon - 2004 - Foundations of Physics 34 (11):1703-1724.
    Euler’s interpretation of Newton’s gravity (NG) as Archimedes’ thrust in a fluid ether is presented in some detail. Then a semi-heuristic mechanism for gravity, close to Euler’s, is recalled and compared with the latter. None of these two ‘‘gravitational ethers’’ can obey classical mechanics. This is logical since the ether defines the very reference frame, in which mechanics is defined. This concept is used to build a scalar theory of gravity: NG corresponds to an incompressible ether, a (...)
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  49.  27
    Dark Matter = Modified Gravity? Scrutinising the Spacetime–Matter Distinction Through the Modified Gravity/ Dark Matter Lens.Niels C. M. Martens & Dennis Lehmkuhl - 2020 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 72:237-250.
    This paper scrutinises the tenability of a strict conceptual distinction between space and matter via the lens of the debate between modified gravity and dark matter. In particular, we consider Berezhiani and Khoury's novel 'superfluid dark matter theory' as a case study. Two families of criteria for being matter and being spacetime, respectively, are extracted from the literature. Evaluation of the new scalar field postulated by SFDM according to these criteria reveals that it is as much matter as anything (...)
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  50.  3
    The Gravity of Thought.Jean-Luc Nancy - 1997 - Humanities Press.
    A meditation on the changing role of philosophy in a postmodernist context, the two essays gathered here—The Forgetting of Philosophy and The Weight of a Thought—represent some of the themes that have recently occupied Nancy's thought.
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