Search results for 'Gerard 'T. Hooft' (try it on Scholar)

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  1. Emmanuel Tourpe & Gilbert Gérard (2001). [Comment Dieu Entre-T-Il En Philosophie?]. Revue Philosophique De Louvain 99 (3):357-357.
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  2. Duménil Gérard, Lévy Dominique & Bruno Tinel (2009). À propos de la crise du néolibéralisme. Un entretien de Bruno Tinel avec Gérard Duménil et Dominique Lévy. Actuel Marx 46:178 - 194.
    ome Remarks on the Crisis of Capitalism What are the causes and consequences of the crisis of capitalism ? What are the plausible scenarios forthe outcome of the crisis ? To what extent is the current crisis comparable to that of 1929, and to whatextent does it differ from the crisis of the 1970s ? To what extent can one speak of a crisis of neoliberalism ? These are some of the questions which the authors of The Crisis of Neoliberalism (...)
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  3.  20
    Nazim Bouatta & Jeremy Butterfield (2015). On Emergence in Gauge Theories at the ’T Hooft Limit‘. European Journal for Philosophy of Science 5 (1):55-87.
    Quantum field theories are notoriously difficult to understand, physically as well as philosophically. The aim of this paper is to contribute to a better conceptual understanding of gauge quantum field theories, such as quantum chromodynamics, by discussing a famous physical limit, the ’t Hooft limit, in which the theory concerned often simplifies. The idea of the limit is that the number N of colours goes to infinity. The simplifications that can happen in this limit, and that we will consider, (...)
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  4. Henry Stapp, On Thu, 2 Aug 2007, Stanley Klein Wrote: > Hi Henry, > Do You Know What 'T Hooft is Up to in the Following Article? > Why is It That Different From > Bohm's Deterministic Theory. [REVIEW]
    This "axiom" must be used with great care. It is well-known that the formalism of Relativistic Quantum Field Theory (RQFT) is 'Relativistic" in the sense that it allows no "signal" to be transmitted faster than the speed of light. So RQFT does conform to "The FIN Axiom" if by "effectively transmitted" one is referring to the transmission of a "signal". Here a "signal" means a controllable dependence of a faraway observable upon a sender's choices (of how he will act); a (...)
     
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  5.  7
    Gerard ’T. Hooft (2011). A Class of Elementary Particle Models Without Any Adjustable Real Parameters. Foundations of Physics 41 (12):1829-1856.
    Conventional particle theories such as the Standard Model have a number of freely adjustable coupling constants and mass parameters, depending on the symmetry algebra of the local gauge group and the representations chosen for the spinor and scalar fields. There seems to be no physical principle to determine these parameters as long as they stay within certain domains dictated by the renormalization group. Here however, reasons are given to demand that, when gravity is coupled to the system, local conformal invariance (...)
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  6.  69
    V. L. Austin (2010). Book Review: Philomena Cullen, Bernard Hoose and Gerard Mannion (Eds.), Catholic Social Justice: Theological and Practical Explorations (London: T & T Clark, 2007). Xx + 250 Pp. 18.99 (Pb), ISBN 978-0-567-04542-. [REVIEW] Studies in Christian Ethics 23 (1):87-90.
  7.  7
    Alexander Lucie-Smith (2012). Moral Theology for the Twenty-First Century: Essays in Celebration of Kevin Kelly. Edited by Bernard Hoose , Julie Clague and Gerard Mannion . Pp. Xvi, 301, T&T Clark, 2008, £70.00. [REVIEW] Heythrop Journal 53 (5):837-838.
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  8.  3
    N. H. Taylor (2012). Christian Community Now: Ecclesiological Investigations (Ecclesiological Investigations 2). By Paul M. Collins, Gerard Mannion, Gareth Powell & Kenneth Wilson. Pp. Xviii, 200, London, T & T Clark, 2008, $87.84. [REVIEW] Heythrop Journal 53 (6):1056-1056.
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  9.  1
    Dorothy V. Jones (1996). Peacemaking, Edited by Gerard F. Powers, Drew Christiansen S.J., and Robert T. Hennemeyer , 368 Pp., $19.95, Paper; For Peace in God's World , 24 Pp. [REVIEW] Ethics and International Affairs 10:214-215.
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  10. Jean-Dominique Robert (1982). SIEGWALT, Gérard, dir., La nature a-t-elle un sens ? Civilisation technologique et conscience chrétienne devant l'inquiétude technologique. Laval Théologique et Philosophique 38 (2):213-214.
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  11.  25
    Dennis Dieks, Jeroen van Dongen & Sebastian de Haro (2015). Emergence in Holographic Scenarios for Gravity. Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 52:203-216.
    'Holographic' relations between theories have become a main theme in quantum gravity research. These relations entail that a theory without gravity is equivalent to a gravitational theory with an extra spatial dimension. The idea of holography was first proposed in 1993 by Gerard 't Hooft on the basis of his studies of evaporating black holes. Soon afterwards the holographic 'AdS/CFT' duality was introduced, which since has been heavily studied in the string theory community and beyond. Recently, Erik Verlinde (...)
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  12.  4
    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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  13.  78
    Gerard ’T. Hooft (2014). Superstrings and the Foundations of Quantum Mechanics. Foundations of Physics 44 (5):463-471.
    It is put forward that modern elementary particle physics cannot be completely unified with the laws of gravity and general relativity without addressing the question of the ontological interpretation of quantum mechanics itself. The position of superstring theory in this general question is emphasized: superstrings may well form exactly the right mathematical system that can explain how quantum mechanics can be linked to a deterministic picture of our world. Deterministic interpretations of quantum mechanics are usually categorically rejected, because of Bell’s (...)
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  14.  11
    Sebastian de Haro, Dennis Dieks, Gerard ’T. Hooft & Erik Verlinde (2013). Forty Years of String Theory Reflecting on the Foundations. Foundations of Physics 43 (1):1-7.
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  15.  48
    Gerard 'T. Hooft (2001). Obstacles on the Way Towards the Quantisation of Space, Time and Matter — and Possible Resolutions. Studies in History and Philosophy of Science Part B 32 (2):157-180.
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  16.  28
    Gerard ’T. Hooft (2012). The Pursuit of Quantum Gravity. Foundations of Physics 42 (5):685-687.
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  17.  19
    Gerard ’T. Hooft (2011). A Class of Elementary Particle Models Without Any Adjustable Real Parameters. Foundations of Physics 41 (12):1829-1856.
  18.  27
    Gerard ’T. Hooft (2013). Duality Between a Deterministic Cellular Automaton and a Bosonic Quantum Field Theory in 1+1 Dimensions. Foundations of Physics 43 (5):597-614.
    Methods developed in a previous paper are employed to define an exact correspondence between the states of a deterministic cellular automaton in 1+1 dimensions and those of a bosonic quantum field theory. The result may be used to argue that quantum field theories may be much closer related to deterministic automata than what is usually thought possible.
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  19.  17
    Gerard ’T. Hooft (2008). Editorial Note. Foundations of Physics 38 (1):1-2.
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  20.  13
    Gerard ’T. Hooft (2008). A Locally Finite Model for Gravity. Foundations of Physics 38 (8):733-757.
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  21.  14
    Gerard ’T. Hooft (2012). The Pursuit of Quantum Gravity. Foundations of Physics 42 (5):685-687.
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  22.  13
    Gerard ’T. Hooft (2008). A Locally Finite Model for Gravity. Foundations of Physics 38 (8):733-757.
    Matter interacting classically with gravity in 3+1 dimensions usually gives rise to a continuum of degrees of freedom, so that, in any attempt to quantize the theory, ultraviolet divergences are nearly inevitable. Here, we investigate matter of a form that only displays a finite number of degrees of freedom in compact sections of space-time. In finite domains, one has only exact, analytic solutions. This is achieved by limiting ourselves to straight pieces of string, surrounded by locally flat sections of space-time. (...)
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  23.  13
    Gerard ’T. Hooft (2013). On the Foundations of Superstring Theory. Foundations of Physics 43 (1):46-53.
    Superstring theory is an extension of conventional quantum field theory that allows for stringlike and branelike material objects besides pointlike particles. The basic foundations on which the theory is built are amazingly shaky, and, equally amazingly, it seems to be this lack of solid foundations to which the theory owes its strength. We emphasize that such a situation is legitimate only in the development phases of a new doctrine. Eventually, a more solidly founded structure must be sought.Although it is advertised (...)
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  24.  10
    Gerard ’T. Hooft (2013). Duality Between a Deterministic Cellular Automaton and a Bosonic Quantum Field Theory in 1+1 Dimensions. Foundations of Physics 43 (5):597-614.
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  25.  8
    Gerard ’T. Hooft (2014). Relating the Quantum Mechanics of Discrete Systems to Standard Canonical Quantum Mechanics. Foundations of Physics 44 (4):406-425.
    Standard canonical quantum mechanics makes much use of operators whose spectra cover the set of real numbers, such as the coordinates of space, or the values of the momenta. Discrete quantum mechanics uses only strictly discrete operators. We show how one can transform systems with pairs of integer-valued, commuting operators $P_i$ and $Q_i$ , to systems with real-valued canonical coordinates $q_i$ and their associated momentum operators $p_i$ . The discrete system could be entirely deterministic while the corresponding (p, q) system (...)
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  26.  5
    Gerard `T. Hooft (1997). Complexity in Quantum Gravity. Complexity 3 (1):36-37.
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  27.  5
    Gerard ’T. Hooft (2013). On the Foundations of Superstring Theory. Foundations of Physics 43 (1):46-53.
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  28. Gerard T. Hooft (2008). Naar een herstel van het deterministische wereldbeeld. Algemeen Nederlands Tijdschrift voor Wijsbegeerte 100 (4).
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  29. Gerard 'T. Hooft (2001). Obstacles on the Way Towards the Quantisation of Space, Time and Matter — and Possible Resolutions. Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 32 (2):157-180.
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  30.  4
    Gerard Magill (2012). Catholic Social Teaching, 1891-Present: A Historical, Theological, and Ethical Analysis. By Charles Curran. Pp. 261, Washington, D.C., Georgetown University Press, 2002, $24.95. Christian Bioethics: A Guide for the Perplexed. By Agneta Sutton. Pp.180, London, T & T Clark (Continuum), 2008, £24.95. [REVIEW] Heythrop Journal 53 (5):849-851.
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  31. Martin Heidegger, Aloys Becker & Gérard Granel (1960). Qu'appelle-t'on penser? Les Etudes Philosophiques 15 (1):106-107.
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  32.  14
    Gerard Magill (2007). A Church That Can and Cannot Change: The Development of Catholic Moral Teaching. By John T. Noonan Jr, Social Traps and the Problem of Trust. By Bo Rothstein, Living Together & Christian Ethics. By Adrian Thatcher and More Lasting Unions: Christianity, the Family, and Society. By Stephen G. Post. [REVIEW] Heythrop Journal 48 (4):647–649.
  33.  2
    Gérard Vachon (1989). Freud a-T-Il Vraiment Renié le Pouvoir Thérapeutique de la Psychanalyse? Dialogue 28 (04):663-.
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  34. Gerard Casey (1993). T. H. Irwin, "Aristotle's First Principles". International Journal of Philosophical Studies:166.
     
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  35. H. Greaves & D. Wallace (2014). Empirical Consequences of Symmetries. British Journal for the Philosophy of Science 65 (1):59-89.
    It is widely recognized that ‘global’ symmetries, such as the boost invariance of classical mechanics and special relativity, can give rise to direct empirical counterparts such as the Galileo-ship phenomenon. However, conventional wisdom holds that ‘local’ symmetries, such as the diffeomorphism invariance of general relativity and the gauge invariance of classical electromagnetism, have no such direct empirical counterparts. We argue against this conventional wisdom. We develop a framework for analysing the relationship between Galileo-ship empirical phenomena on the one hand, and (...)
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  36. Katherine Brading & Harvey R. Brown (2004). Are Gauge Symmetry Transformations Observable? British Journal for the Philosophy of Science 55 (4):645-665.
    In a recent paper in the British Journal for the Philosophy of Science, Kosso discussed the observational status of continuous symmetries of physics. While we are in broad agreement with his approach, we disagree with his analysis. In the discussion of the status of gauge symmetry, a set of examples offered by ’t Hooft has influenced several philosophers, including Kosso; in all cases the interpretation of the examples is mistaken. In this paper we present our preferred approach to the (...)
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  37.  48
    Katherine Brading & Harvey R. Brown (2004). Are Gauge Symmetry Transformations Observable? British Journal for the Philosophy of Science 55 (4):645-665.
    In a recent paper in this journal, Kosso ([2000]) discussed the observational status of continuous symmetries of physics. While we are in broad agreement with his approach, we disagree with his analysis. In the discussion of the status of gauge symmetry, a set of examples offered by 't Hooft ([1980]) has influenced several philosophers, including Kosso; in all cases the interpretation of the examples is mistaken. In this paper, we present our preferred approach to the empirical significance of symmetries, (...)
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  38. Peter Bokulich (2005). Does Black Hole Complementarity Answer Hawking's Information Loss Paradox? Philosophy of Science 72 (5):1336-1349.
    A proper understanding of black hole complementarity as a response to the information loss paradox requires recognizing the essential role played by arguments for the applicability and limitations of effective semiclassical theories. I argue that this perspective sheds important light on the arguments advanced by Susskind, Thorlacius, and Uglum—although ultimately I argue that their position is unsatisfactory. I also consider the argument offered by ’t Hooft for the breakdown of microcausality around black holes, and conclude that it relies on (...)
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  39.  59
    David A. Owen (1997). The Bethe-Salpeter Equation for Spin-1 Particles. Foundations of Physics 27 (1):57-66.
    We develop here the general treatment of the Bethe—Salpeter equation for the bound state of two spin-l particles interacting through an electromagnetic interaction. The treatment here, which can be generalized to strong interactions, combines the two-component approach utilized previously by the author in conjunction with spontaneous symmetry breaking. This is done by using a Lagrangian having SU(2)×U(1) symmetry (without fermions) and then choosing the ′t Hooft gauge. In this way, a renormalizable theory for the interaction of two spin-l particles (...)
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  40.  14
    Philip D. Mannheim (2012). Making the Case for Conformal Gravity. Foundations of Physics 42 (3):388-420.
    We review some recent developments in the conformal gravity theory that has been advanced as a candidate alternative to standard Einstein gravity. As a quantum theory the conformal theory is both renormalizable and unitary, with unitarity being obtained because the theory is a PT symmetric rather than a Hermitian theory. We show that in the theory there can be no a priori classical curvature, with all curvature having to result from quantization. In the conformal theory gravity requires no independent quantization (...)
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  41.  77
    Jeremy Butterfield & John Earman (eds.) (2007). Philosophy of Physics. Elsevier.
    The ambition of this volume is twofold: to provide a comprehensive overview of the field and to serve as an indispensable reference work for anyone who wants to work in it. For example, any philosopher who hopes to make a contribution to the topic of the classical-quantum correspondence will have to begin by consulting Klaas Landsman’s chapter. The organization of this volume, as well as the choice of topics, is based on the conviction that the important problems in the philosophy (...)
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  42.  18
    Simon Friederich (2015). Symmetry, Empirical Equivalence, and Identity. British Journal for the Philosophy of Science 66 (3):537-559.
    The article proposes a novel approach to the much discussed question of which symmetries have ‘direct empirical significance’ and which do not. The approach is based on a development of a recently proposed framework by Hilary Greaves and David Wallace, who claim that, contrary to the standard folklore among philosophers of physics, ‘local’ symmetries may have direct empirical significance no less than ‘global’ ones. Partly vindicating the standard folklore, a result is derived here from a number of plausible assumptions, that (...)
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  43.  20
    Andrei Khrennikov (2009). Detection Model Based on Representation of Quantum Particles by Classical Random Fields: Born's Rule and Beyond. [REVIEW] Foundations of Physics 39 (9):997-1022.
    Recently a new attempt to go beyond quantum mechanics (QM) was presented in the form of so called prequantum classical statistical field theory (PCSFT). Its main experimental prediction is violation of Born’s rule which provides only an approximative description of real probabilities. We expect that it will be possible to design numerous experiments demonstrating violation of Born’s rule. Moreover, recently the first experimental evidence of violation was found in the triple slit interference experiment, see Sinha, et al. (Foundations of Probability (...)
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  44.  19
    Fabio Scardigli (2007). A Quantum-Like Description of the Planetary Systems. Foundations of Physics 37 (8):1278-1295.
    The Titius–Bode law for planetary distances is reviewed. A model describing the basic features of this rule in the “quantum-like” language of a wave equation is proposed. Some considerations about the ’t Hooft idea on the quantum behavior of deterministic systems with dissipation are discussed.
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  45.  15
    Gerard T. Campbell (1977). Sartre's Absolute Freedom. Laval Théologique et Philosophique 33 (1):61-91.
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  46.  46
    Vladimir A. Lefebvre & Yuri N. Efremov (2008). Cosmic Intelligence and Black Holes. World Futures 64 (8):563 – 576.
    We propose that black holes may serve as a physical substratum for intelligent beings, based on(1) The descriptions of brain and psyche are complementary to each other, as internal and external observers of a black hole in the Susskind-t'Hooft's schema.(2) There is an aspect of the inner structure of a black hole that is isomorphic to the structure of the human subjective domain in the psychological model of reflexion.(3) Both black holes and the brain-psyche system have a facet that (...)
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  47.  15
    Peter Bokulich (2011). Interactions and the Consistency of Black Hole Complementarity. International Studies in the Philosophy of Science 25 (4):371-386.
    Presentations of black hole complementarity by van Dongen and de Haro, as well as by 't Hooft, suffer from a mistaken claim that interactions between matter falling into a black hole and the emitted Hawking-like radiation should lead to a failure of commutativity between space-like-related observables localized inside and outside the black hole. I show that this conclusion is not supported by our standard understanding of quantum interactions. We have no reason to believe that near-horizon interactions will threaten microcausality. (...)
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  48.  11
    Gerard T. Ferrari (1986). The Resolution of Hume's Problem, and New Russellian Antinomies of Induction, Determinism, Relativism, and Skepticism. Philosophy Research Archives 12:471-517.
    A necessary refinement of the concept of circular reasoning is applied to the self-and-universally-referential inductive justification of induction. It is noted that the assumption necessary for the circular proof of a principle of induction is that one inference is valid, not that the entire principle or rule of induction governing that inference is true. The circularity in an ideal case is demonstrated to have a value of lin where n represents the number of inferences asserted valid by the conclusion of (...)
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  49.  6
    John Earman & Jeremy Butterfield (eds.) (2007). Philosophy of Physics. Elsevier.
    The ambition of this volume is twofold: to provide a comprehensive overview of the field and to serve as an indispensable reference work for anyone who wants to work in it. For example, any philosopher who hopes to make a contribution to the topic of the classical-quantum correspondence will have to begin by consulting Klaas Landsman’s chapter. The organization of this volume, as well as the choice of topics, is based on the conviction that the important problems in the philosophy (...)
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  50.  38
    Erik A. Anderson (2013). A Defense of the 'Sterility Objection' to the New Natural Lawyers' Argument Against Same-Sex Marriage. Ethical Theory and Moral Practice 16 (4):759-775.
    The “new natural lawyers” (NNLs) are a prolific group of philosophers, theologians, and political theorists that includes John Finnis, Robert George, Patrick Lee, Gerard Bradley, and Germain Grisez, among others. These thinkers have devoted themselves to developing and defending a traditional sexual ethic according to which homosexual sexual acts are immoral per se and marriage ought to remain an exclusively heterosexual institution. The sterility objection holds that the NNLs are guilty of making an arbitrary and irrational distinction between same-sex (...)
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