Search results for 'Field Theory' (try it on Scholar)

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  1. Hartry Field (1974). Quine and the Correspondence Theory. Philosophical Review 83 (2):200-228.score: 200.0
    A correspondence theory of truth explains truth in terms of various correspondence relations (e.G., Reference) between words and the extralinguistic world. What are the consequences of quine's doctrine of indeterminacy for correspondence theories? in "ontological relativity" quine implicitly claims that correspondence theories are impossible; that is what the doctrine of 'relative reference' amounts to. But quine's doctrine of relative reference is incoherent. Those who think the indeterminacy thesis valid should not try to relativize reference, They should abandon the relation (...)
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  2. Sunny Y. Auyang (1995). How is Quantum Field Theory Possible? Oxford University Press.score: 180.0
    Quantum field theory (QFT) combines quantum mechanics with Einstein's special theory of relativity and underlies elementary particle physics. This book presents a philosophical analysis of QFT. It is the first treatise in which the philosophies of space-time, quantum phenomena, and particle interactions are encompassed in a unified framework. Describing the physics in nontechnical terms, and schematically illustrating complex ideas, the book also serves as an introduction to fundamental physical theories. The philosophical interpretation both upholds the reality of (...)
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  3. Harvey R. Brown & Rom Harré (eds.) (1988). Philosophical Foundations of Quantum Field Theory. Oxford University Press.score: 180.0
    Quantum field theory, one of the most rapidly developing areas of contemporary physics, is full of problems of great theoretical and philosophical interest. This collection of essays is the first systematic exploration of the nature and implications of quantum field theory. The contributors discuss quantum field theory from a wide variety of standpoints, exploring in detail its mathematical structure and metaphysical and methodological implications.
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  4. R. G. Beil (2003). Finsler Geometry and Relativistic Field Theory. Foundations of Physics 33 (7):1107-1127.score: 180.0
    Finsler geometry on the tangent bundle appears to be applicable to relativistic field theory, particularly, unified field theories. The physical motivation for Finsler structure is conveniently developed by the use of “gauge” transformations on the tangent space. In this context a remarkable correspondence of metrics, connections, and curvatures to, respectively, gauge potentials, fields, and energy-momentum emerges. Specific relativistic electromagnetic metrics such as Randers, Beil, and Weyl can be compared.
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  5. Friedrich W. Hehl & Yuri N. Obukhov (2008). An Assessment of Evans' Unified Field Theory II. Foundations of Physics 38 (1):38-46.score: 180.0
    Evans attempted to develop a classical unified field theory of gravitation and electromagnetism on the background of a spacetime obeying a Riemann-Cartan geometry. In an accompanying paper I, we analyzed this theory and summarized it in nine equations. We now propose a variational principle for a theory that implements some of the ideas that have been (imprecisely) indicated by Evans and show that it yields two field equations. The second field equation is algebraic in (...)
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  6. Friedrich W. Hehl (2008). An Assessment of Evans' Unified Field Theory I. Foundations of Physics 38 (1):7-37.score: 180.0
    Evans developed a classical unified field theory of gravitation and electromagnetism on the background of a spacetime obeying a Riemann-Cartan geometry. This geometry can be characterized by an orthonormal coframe ϑ α and a (metric compatible) Lorentz connection Γ α β . These two potentials yield the field strengths torsion T α and curvature R α β . Evans tried to infuse electromagnetic properties into this geometrical framework by putting the coframe ϑ α to be proportional to (...)
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  7. 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.score: 180.0
    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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  8. Meinard Kuhlmann (2010). Why Conceptual Rigour Matters to Philosophy: On the Ontological Significance of Algebraic Quantum Field Theory. [REVIEW] Foundations of Physics 40 (9):1625-1637.score: 180.0
    I argue that algebraic quantum field theory (AQFT) permits an undisturbed view of the right ontology for fundamental physics, whereas standard (or Lagrangian) QFT offers different mutually incompatible ontologies.My claim does not depend on the mathematical inconsistency of standard QFT but on the fact that AQFT has the same concerns as ontology, namely categorical parsimony and a clearly structured hierarchy of entities.
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  9. Yuichiro Kitajima (2013). EPR States and Bell Correlated States in Algebraic Quantum Field Theory. Foundations of Physics 43 (10):1182-1192.score: 180.0
    A mathematical rigorous definition of EPR states has been introduced by Arens and Varadarajan for finite dimensional systems, and extended by Werner to general systems. In the present paper we follow a definition of EPR states due to Werner. Then we show that an EPR state for incommensurable pairs is Bell correlated, and that the set of EPR states for incommensurable pairs is norm dense between two strictly space-like separated regions in algebraic quantum field theory.
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  10. Gábor Hofer-Szabó & Péter Vecsernyés (2012). Reichenbach's Common Cause Principle in Algebraic Quantum Field Theory with Locally Finite Degrees of Freedom. Foundations of Physics 42 (2):241-255.score: 180.0
    In the paper it will be shown that Reichenbach’s Weak Common Cause Principle is not valid in algebraic quantum field theory with locally finite degrees of freedom in general. Namely, for any pair of projections A, B supported in spacelike separated double cones ${\mathcal{O}}_{a}$ and ${\mathcal{O}}_{b}$ , respectively, a correlating state can be given for which there is no nontrivial common cause (system) located in the union of the backward light cones of ${\mathcal{O}}_{a}$ and ${\mathcal{O}}_{b}$ and commuting with (...)
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  11. Miklos Redei & Stephen J. Summers (2002). Local Primitive Causality and the Common Cause Principle in Quantum Field Theory. Foundations of Physics 32 (3):335-355.score: 180.0
    If $\mathcal{A}$ (V) is a net of local von Neumann algebras satisfying standard axioms of algebraic relativistic quantum field theory and V 1 and V 2 are spacelike separated spacetime regions, then the system ( $\mathcal{A}$ (V 1 ), $\mathcal{A}$ (V 2 ), φ) is said to satisfy the Weak Reichenbach's Common Cause Principle iff for every pair of projections A∈ $\mathcal{A}$ (V 1 ), B∈ $\mathcal{A}$ (V 2 ) correlated in the normal state φ there exists a (...)
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  12. Mark H. Bickhard (2003). Variations in Variation and Selection: The Ubiquity of the Variation-and-Selective-Retention Ratchet in Emergent Organizational Complexity, Part II: Quantum Field Theory. [REVIEW] Foundations of Science 8 (3):283-293.score: 180.0
    If the general arguments concerning theinvolvement of variation and selection inexplanations of ``fit'' are valid, then variationand selection explanations should beappropriate, or at least potentiallyappropriate, outside the paradigm historisticdomains of biology and knowledge. In thisdiscussion, I wish to indicate some potentialroles for variation and selection infoundational physics – specifically inquantum field theory. I will not be attemptingany full coherent ontology for quantum fieldtheory – none currently exists, and none islikely for at least the short term future. Instead, I (...)
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  13. Iii George Medley (2013). The Inspiration of God and Wolfhart Pannenberg's “Field Theory of Information”. Zygon 48 (1):93-106.score: 180.0
    This paper will examine the implications of an extended “field theory of information,” suggested by Wolfhart Pannenberg, specifically in the Christian understanding of creation. The paper argues that the Holy Spirit created the world as field, a concept from physics, and the creation is directed by the logos utilizing information. Taking into account more recent developments of information theory, the essay further suggests that present creation has a causal impact upon the information utilized in creation. In (...)
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  14. P. A. Marchetti (2010). Spin-Statistics Transmutation in Quantum Field Theory. Foundations of Physics 40 (7):746-764.score: 180.0
    Spin-statistics transmutation is the phenomenon occurring when a “dressing” transformation introduced for physical reasons (e.g. gauge invariance) modifies the “bare” spin and statistics of particles or fields. Historically, it first appeared in Quantum Mechanics and in semiclassical approximation to Quantum Field Theory. After a brief historical introduction, we sketch how to describe such phenomenon in Quantum Field Theory beyond the semiclassical approximation, using a path-integral formulation of euclidean correlation functions, exemplifying with anyons, dyons and skyrmions.
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  15. Mark A. Rubin (2011). Observers and Locality in Everett Quantum Field Theory. Foundations of Physics 41 (7):1236-1262.score: 180.0
    A model for measurement in collapse-free nonrelativistic fermionic quantum field theory is presented. In addition to local propagation and effectively-local interactions, the model incorporates explicit representations of localized observers, thus extending an earlier model of entanglement generation in Everett quantum field theory (Rubin in Found. Phys. 32:1495–1523, 2002). Transformations of the field operators from the Heisenberg picture to the Deutsch-Hayden picture, involving fictitious auxiliary fields, establish the locality of the model. The model is applied to (...)
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  16. Francesco Giacosa (2012). Non-Exponential Decay in Quantum Field Theory and in Quantum Mechanics: The Case of Two (or More) Decay Channels. Foundations of Physics 42 (10):1262-1299.score: 180.0
    We study the deviations from the exponential decay law, both in quantum field theory (QFT) and quantum mechanics (QM), for an unstable particle which can decay in (at least) two decay channels. After a review of general properties of non-exponential decay in QFT and QM, we evaluate in both cases the decay probability that the unstable particle decays in a given channel in the time interval between t and t+dt. An important quantity is the ratio of the probability (...)
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  17. Mark A. Rubin (2002). Locality in the Everett Interpretation of Quantum Field Theory. Foundations of Physics 32 (10):1495-1523.score: 180.0
    Recently it has been shown that transformations of Heisenberg-picture operators are the causal mechanism which allows Bell-theorem-violating correlations at a distance to coexist with locality in the Everett interpretation of quantum mechanics. A calculation to first order in perturbation theory of the generation of EPRB entanglement in nonrelativistic fermionic field theory in the Heisenberg picture illustrates that the same mechanism leads to correlations without nonlocality in quantum field theory as well. An explicit transformation is given (...)
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  18. Bert Schroer (2010). Localization and the Interface Between Quantum Mechanics, Quantum Field Theory and Quantum Gravity I. Studies in History and Philosophy of Science Part B 41 (2):104-127.score: 156.0
    It is shown that there are significant conceptual differences between QM and QFT which make it difficult to view the latter as just a relativistic extension of the principles of QM. At the root of this is a fundamental distiction between Born-localization in QM (which in the relativistic context changes its name to Newton–Wigner localization) and modular localization which is the localization underlying QFT, after one separates it from its standard presentation in terms of field coordinates. The first comes (...)
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  19. Bert Schroer (2010). Localization and the Interface Between Quantum Mechanics, Quantum Field Theory and Quantum Gravity II. Studies in History and Philosophy of Science Part B 41 (4):293-308.score: 156.0
    The main topics of this second part of a two-part essay are some consequences of the phenomenon of vacuum polarization as the most important physical manifestation of modular localization. Besides philosophically unexpected consequences, it has led to a new constructive “outside-inwards approach” in which the pointlike fields and the compactly localized operator algebras which they generate only appear from intersecting much simpler algebras localized in noncompact wedge regions whose generators have extremely mild almost free field behavior. -/- Another consequence (...)
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  20. Thomas Fuß (2002). SU(3) Local Gauge Field Theory as Effective Dynamics of Composite Gluons. Foundations of Physics 32 (11):1737-1755.score: 156.0
    The effective dynamics of quarks is described by a nonperturbatively regularized NJL model equation with canonical quantization and probability interpretation. The quantum theory of this model is formulated in functional space and the gluons are considered as relativistic bound states of colored quark-antiquark pairs. Their wave functions are calculated as eigenstates of hardcore equations, and their effective dynamics is derived by weak mapping in functional space. This leads to the phenomenological SU(3) gauge invariant gluon equations in functional formulation, i.e., (...)
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  21. H. Kleinert (2014). Quantum Field Theory of Black-Swan Events. Foundations of Physics 44 (5):546-556.score: 156.0
    Free and weakly interacting particles are described by a second-quantized nonlinear Schrödinger equation, or relativistic versions of it. They describe Gaussian random walks with collisions. By contrast, the fields of strongly interacting particles are governed by effective actions, whose extremum yields fractional field equations. Their particle orbits perform universal Lévy walks with heavy tails, in which rare events are much more frequent than in Gaussian random walks. Such rare events are observed in exceptionally strong windgusts, monster or rogue waves, (...)
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  22. Olivier Driessens (2013). Celebrity Capital: Redefining Celebrity Using Field Theory. [REVIEW] Theory and Society 42 (5):543-560.score: 156.0
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  23. Jan Rzewuski (1967). Field Theory. London, Iliffe.score: 156.0
    v. 1. Classical theory.--v. 2. Functional formulation of S-matrix theory.
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  24. J. McFadden (2002). The Conscious Electromagnetic Information (Cemi) Field Theory: The Hard Problem Made Easy? Journal of Consciousness Studies 9 (8):45-60.score: 150.0
  25. Susan Pockett (2002). Difficulties with the Electromagnetic Field Theory of Consciousness. Journal of Consciousness Studies 9 (4):51-56.score: 150.0
  26. Heinz Werner & Seymour Wapner (1952). Experiments on Sensory-Tonic Field Theory of Perception: IV. Effect of Initial Position of a Rod on Apparent Verticality. Journal of Experimental Psychology 43 (1):68.score: 150.0
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  27. Seymour Wapner, Heinz Werner & Ricardo B. Morant (1951). Experiments on Sensory-Tonic Field Theory of Perception. III. Effect of Body Rotation on the Visual Perception of Verticality. [REVIEW] Journal of Experimental Psychology 42 (5):351.score: 150.0
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  28. Seymour Wapner & Heinz Werner (1952). Experiments on Sensory-Tonic Field Theory of Perception: V. Effect of Body Status on the Kinesthetic Perception of Verticality. Journal of Experimental Psychology 44 (2):126.score: 150.0
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  29. Heinz Werner, Seymour Wapner & Kenneth A. Chandler (1951). Experiments on Sensory-Tonic Field Theory of Perception: II. Effect of Supported and Unsupported Tilt of the Body on the Visual Perception of Verticality. Journal of Experimental Psychology 42 (5):346.score: 150.0
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  30. Frank Hättich (2004). Quantum Processes: A Whiteheadian Interpretation of Quantum Field Theory. Agenda.score: 150.0
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  31. Kullervo Rainio (1986). Stochastic Field Theory of Behavior. Academic Bookstore [Distributor].score: 150.0
  32. Seymour Wapner, Heinz Warner, Jan H. Bruell & Alvin G. Goldstein (1953). Experiments on Sensory-Tonic Field Theory of Perception: VII. Effect of Asymmetrical Extent and Starting Positions of Figures on the Visual Apparent Median Plane. Journal of Experimental Psychology 46 (4):300.score: 150.0
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  33. Heinz Werner, Seymour Wapner & Jan H. Bruell (1953). Experiments on Sensory-Tonic Field Theory of Perception: VI. Effect of Position of Head, Eyes, and of Object on Position of the Apparent Median Plane. Journal of Experimental Psychology 46 (4):293.score: 150.0
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  34. Seymour Wapner, Heinz Werner & Kenneth A. Chandler (1951). Experiments on Sensory-Tonic Field Theory of Perception: I. Effect of Extraneous Stimulation on the Visual Perception of Verticality. Journal of Experimental Psychology 42 (5):341.score: 138.0
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  35. Edward MacKinnon (2007). Schwinger and the Ontology of Quantum Field Theory. Foundations of Science 12 (4):295-323.score: 132.0
    An epistemological interpretation of quantum mechanics hinges on the claim that the distinctive features of quantum mechanics can be derived from some distinctive features of an observational basis. Old and new variations of this theme are listed. The program has a limited success in non-relativistic quantum mechanics. The crucial issue is how far it can be extended to quantum field theory without introducing significant ontological postulates. A C*-formulation covers algebraic quantum field theory, but not the standard (...)
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  36. Jerzy Król (2006). A Model for Spacetime II. The Emergence of Higher Dimensions and Field Theory/Strings Dualities. Foundations of Physics 36 (12):1778-1800.score: 132.0
    We show that in 4-spacetime modified at very short distances due to the weakening of classical logic, the higher dimensions emerge. We analyse the case of some smooth topoi, and the case of some class of pointless topoi. The pointless topoi raise the dimensionality due to the forcing adding “string” objects and thus replacing classical points in spacetime. Turning to strings would be something fundamental and connected with set theoretical forcing. The field theory/strings dualities originate at the set (...)
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  37. I. Schmelzer (2010). Overlaps in Pilot Wave Field Theories. Foundations of Physics 40 (3):289-300.score: 132.0
    Recently doubts have been raised about the ability of pilot wave theories with field ontology to recover the predictions of quantum field theory. In particular, Struyve has questioned that the overlap between wave functionals of macroscopically different states with fixed particle number is really non-significant.With numerical computations and some further plausibility arguments we show that the overlap between n-particle states in field theory decreases almost exponentially with the number of particles and becomes non-significant already for (...)
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  38. Jonathan Bain (2013). Emergence in Effective Field Theories. European Journal for Philosophy of Science 3 (3):257-273.score: 128.0
    This essay considers the extent to which a concept of emergence can be associated with Effective Field Theories (EFTs). I suggest that such a concept can be characterized by microphysicalism and novelty underwritten by the elimination of degrees of freedom from a high-energy theory, and argue that this makes emergence in EFTs distinct from other concepts of emergence in physics that have appeared in the recent philosophical literature.
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  39. Andrei Khrennikov (2011). Prequantum Classical Statistical Field Theory: Schrödinger Dynamics of Entangled Systems as a Classical Stochastic Process. [REVIEW] Foundations of Physics 41 (3):317-329.score: 124.0
    The idea that quantum randomness can be reduced to randomness of classical fields (fluctuating at time and space scales which are essentially finer than scales approachable in modern quantum experiments) is rather old. Various models have been proposed, e.g., stochastic electrodynamics or the semiclassical model. Recently a new model, so called prequantum classical statistical field theory (PCSFT), was developed. By this model a “quantum system” is just a label for (so to say “prequantum”) classical random field. Quantum (...)
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  40. Gabriel D. Puccini & Héctor Vucetich (2004). Steps Towards the Axiomatic Foundations of the Relativistic Quantum Field Theory: Spin-Statistics, Commutation Relations, and CPT Theorems. [REVIEW] Foundations of Physics 34 (4):643-667.score: 124.0
    A realistic physical axiomatic approach of the relativistic quantum field theory is presented. Following the action principle of Schwinger, a covariant and general formulation is obtained. The correspondence principle is not invoked and the commutation relations are not postulated but deduced. The most important theorems such as spin-statistics, and CPT are proved. The theory is constructed form the notion of basic field and system of basic fields. In comparison with others formulations, in our realistic approach fields (...)
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  41. Doreen Fraser (2009). Quantum Field Theory: Underdetermination, Inconsistency, and Idealization. Philosophy of Science 76 (4):536-567.score: 120.0
    Quantum field theory (QFT) presents a genuine example of the underdetermination of theory by empirical evidence. There are variants of QFT—for example, the standard textbook formulation and the rigorous axiomatic formulation—that are empirically indistinguishable yet support different interpretations. This case is of particular interest to philosophers of physics because, before the philosophical work of interpreting QFT can proceed, the question of which variant should be subject to interpretation must be settled. New arguments are offered for basing the (...)
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  42. J. B. Pitts (2011). Permanent Underdetermination From Approximate Empirical Equivalence in Field Theory: Massless and Massive Scalar Gravity, Neutrino, Electromagnetic, Yang-Mills and Gravitational Theories. British Journal for the Philosophy of Science 62 (2):259-299.score: 120.0
    Classical and quantum field theory provide not only realistic examples of extant notions of empirical equivalence, but also new notions of empirical equivalence, both modal and occurrent. A simple but modern gravitational case goes back to the 1890s, but there has been apparently total neglect of the simplest relativistic analog, with the result that an erroneous claim has taken root that Special Relativity could not have accommodated gravity even if there were no bending of light. The fairly recent (...)
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  43. Michael Redhead (1982). Quantum Field Theory for Philosophers. PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1982:57 - 99.score: 120.0
    The metaphysical commitments of quantum field theory are examined. A thesis of underdetermination as between field and particle approaches to the "elementary particles" is argued for but only if a disputed notion of transcendental individuality is admitted. The superiority of the field approach is further emphasized in the context of heuristics.
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  44. Laura Ruetsche (2002). Interpreting Quantum Field Theory. Philosophy of Science 69 (2):348-378.score: 120.0
    The availability of unitarily inequivalent representations of the canonical commutation relations constituting a quantization of a classical field theory raises questions about how to formulate and pursue quantum field theory. In a minimally technical way, I explain how these questions arise and how advocates of the Hilbert space and of the algebraic approaches to quantum theory might answer them. Where these answers differ, I sketch considerations for and against each approach, as well as considerations which (...)
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  45. N. Huggett (2000). Philosophical Foundations of Quantum Field Theory. British Journal for the Philosophy of Science 51 (4):617-637.score: 120.0
    Much attention has been directed to the philosophical implications of quantum field theory (QFT) in recent years; this paper attempts a survey in low-technical terms. First the relations of QFT to other kinds of theory, classical and quantum, particle and field, are discussed. Then various formulations of QFT are introduced, along with related interpretations. Finally a review is made of some of the most interesting foundational problems.
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  46. John Earman & Doreen Fraser (2006). Haag's Theorem and its Implications for the Foundations of Quantum Field Theory. Erkenntnis 64 (3):305 - 344.score: 120.0
    Although the philosophical literature on the foundations of quantum field theory recognizes the importance of Haag’s theorem, it does not provide a clear discussion of the meaning of this theorem. The goal of this paper is to make up for this deficit. In particular, it aims to set out the implications of Haag’s theorem for scattering theory, the interaction picture, the use of non-Fock representations in describing interacting fields, and the choice among the plethora of the unitarily (...)
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  47. Michael Redhead (1994). The Vacuum in Relativistic Quantum Field Theory. PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1994:77 - 87.score: 120.0
    The status of the vacuum in relativistic quantum field theory is examined. A sharp distinction arises between the global vacuum and the local vacuum. The concept of local number density is critically assessed. The global vacuum state implies fluctuations for all local observables. Correlations between such fluctuations in space-like separated regions of space-time are discussed and the existence of correlations which are maximal in a certain sense is remarked on, independently of how far apart those regions may be. (...)
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  48. Hans Halvorson & Michael Mueger (2006). Algebraic Quantum Field Theory. In J. Butterfield & J. Earman (eds.), Handbook of the philosophy of physics. Kluwer.score: 120.0
    Algebraic quantum field theory provides a general, mathematically precise description of the structure of quantum field theories, and then draws out consequences of this structure by means of various mathematical tools -- the theory of operator algebras, category theory, etc.. Given the rigor and generality of AQFT, it is a particularly apt tool for studying the foundations of QFT. This paper is a survey of AQFT, with an orientation towards foundational topics. In addition to covering (...)
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  49. David Baker (2009). Against Field Interpretations of Quantum Field Theory. British Journal for the Philosophy of Science 60 (3):585-609.score: 120.0
    I examine some problems standing in the way of a successful `field interpretation' of quantum field theory. The most popular extant proposal depends on the Hilbert space of `wavefunctionals.' But since wavefunctional space is unitarily equivalent to many-particle Fock space, two of the most powerful arguments against particle interpretations also undermine this form of field interpretation. IntroductionField Interpretations and Field OperatorsThe Wavefunctional InterpretationFields and Inequivalent Representations 4.1. The Rindler representation 4.2. Spontaneous symmetry breaking 4.3. Coherent (...)
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  50. Henry P. Stapp, Relativistic Whiteheadian Quantum Field Theory: Serial Order and Creative Advance.score: 120.0
    Alfred North Whitehead in his book Process and Reality describes the history of the universe in terms of a process of ‘creative advance into novelty.’ This advance is produced by a collection of happenings called ‘actual occasions’, or ‘actual entities’. Each actual entity has an associated actual world, and it arises from its own peculiar actual world. (PR 284). Two occasions are termed ‘contemporary’ if neither lies in the actual world of the other. A key issue is whether the words (...)
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