About this topic
Summary Quantum field theory (QFT) is the framework of elementary particle physics; it is, in a nutshell, a mathematical framework in which one does quantum mechanics on fields. The metaphysical implications of quantum field theory are of particular interest to philosophers, and in the current literature there are two mainstream opposing views regarding the correct ontology of quantum field theory. According to one, the correct ontology of quantum field theory consists of point particles only, they are real, and fundamental, and fields are not. The other view claims that particles cannot exist, only fields. Also of interest to philosophers are the issues posed by effective field theories and renormalization theory; some philosophers reject conventional quantum field theory and argue for a new axiomatization of quantum field theory. 
Key works In the "fields-only" interpretation of QFT camp are Malament 1996, Fraser 2008, and Hobson 2012; Baker 2009 argues that neither the fields-only or particles-only ontologies are tenable. Wallace 2011 contains a summary and critique of the debate over whether we should adopt conventional or axiomatic quantum field theories in response to the issues posed by renormalization theory and effective field theories. 
Introductions The Stanford Encyclopedia article on Quantum Field Theory is an excellent introduction to the philosophical issues.  Zee's Quantum Field Theory in a Nutshell is a lucid introduction to the physics and mathematics of quantum field theory, and Peskin and Schroeder's Introduction to Quantum Field Theory is the canonical QFT textbook used by physicists. 
Related

Contents
256 found
Order:
1 — 50 / 256
  1. Emergence in effective field theories.Jonathan Bain - 2013 - European Journal for Philosophy of Science 3 (3):257-273.
    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.
    Remove from this list   Direct download (7 more)  
     
    Export citation  
     
    Bookmark   17 citations  
  2. How is spontaneous symmetry breaking possible? Understanding Wigner's theorem in light of unitary inequivalence.David John Baker & Hans Halvorson - 2013 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 44 (4):464-469.
    We pose and resolve a puzzle about spontaneous symmetry breaking in the quantum theory of infinite systems. For a symmetry to be spontaneously broken, it must not be implementable by a unitary operator in a ground state's GNS representation. But Wigner's theorem guarantees that any symmetry's action on states is given by a unitary operator. How can this unitary operator fail to implement the symmetry in the GNS representation? We show how it is possible for a unitary operator of this (...)
    Remove from this list   Direct download (7 more)  
     
    Export citation  
     
    Bookmark   6 citations  
  3. Can Magnetic Forces Do Work?Jacob Barandes - manuscript
    Standard lore holds that magnetic forces are incapable of doing mechanical work. More precisely, the claim is that whenever it appears that a magnetic force is doing work, the work is actually being done by another force, with the magnetic force serving only as an indirect mediator. However, the most familiar instances of magnetic forces acting in everyday life, such as when bar magnets lift other bar magnets, appear to present manifest evidence of magnetic forces doing work. These sorts of (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark   4 citations  
  4. Manifestly Covariant Lagrangians, Classical Particles with Spin, and the Origins of Gauge Invariance.Jacob Barandes - manuscript
    In this paper, we review a general technique for converting the standard Lagrangian description of a classical system into a formulation that puts time on an equal footing with the system's degrees of freedom. We show how the resulting framework anticipates key features of special relativity, including the signature of the Minkowski metric tensor and the special role played by theories that are invariant under a generalized notion of Lorentz transformations. We then use this technique to revisit a classification of (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark   3 citations  
  5. Some historical aspects concerning the rise of the first exact measurements of the anomalous magnetic moment of the muon.Giuseppe Iurato - manuscript
    In this paper, we wish to outline the main historical moments which have led to the first exact measurements of the anomalous magnetic moment of the muon.
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  6. The emergence of resonance dual models: a first look at some early historical prolegomena of a related formal technique.Giuseppe Iurato - manuscript
    We wish to lay out, within its historical context, one of the chief works which has led to the formulation of the early resonance dual models prior to string theory. Indeed, we shall focus on the fundamental Tullio Regge work of 1959, to be precise, on certain Mathematical methods handled by him to pursue his original intentions mainly motivated to prove the validity of the so-called Mandelstam representation for the potential scattering of two spinless particles for a given class of (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  7. The Metaphysics of Invariance.David Schroeren - manuscript
    Fundamental physics contains an important link between properties of elementary particles and continuous symmetries of particle systems. For example, properties such as mass and spin are said to be 'associated' with specific continuous symmetries. -/- These 'associations' have played a key role in the discovery of various new particle kinds, but more importantly: they are thought to provide a deep insight into the nature of physical reality. The link between properties and symmetries has been said to call for a radical (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  8. Emergence of particles from bosonic quantum field theory.David Wallace - manuscript
    An examination is made of the way in which particles emerge from linear, bosonic, massive quantum field theories. Two different constructions of the one-particle subspace of such theories are given, both illustrating the importance of the interplay between the quantum-mechanical linear structure and the classical one. Some comments are made on the Newton-Wigner representation of one-particle states, and on the relationship between the approach of this paper and those of Segal, and of Haag and Ruelle.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark   22 citations  
  9. Feynman's Diagrams, Pictorial Representations and Styles of Scientific Thinking.Dorato Mauro & Emanuele Rossanese - 2017
    In this paper we argue that the different positions taken by Dyson and Feynman on Feynman diagrams’ representational role depend on different styles of scientific thinking. We begin by criticizing the idea that Feynman Diagrams can be considered to be pictures or depictions of actual physical processes. We then show that the best interpretation of the role they play in quantum field theory and quantum electrodynamics is captured by Hughes' Denotation, Deduction and Interpretation theory of models (DDI), where “models” are (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  10. Model λ(φ^2n )_4,n≥2 Quantum Field Theory: A Nonstandard Approach Based on Nonstandard Pointwise-Defined Quantum Fields.Jaykov Foukzon - forthcoming - Journal of Physics: Conference Series:35. Translated by Jaykov Foukzon.
    A new non-Archimedean approach to interacted quantum fields is presented. In proposed approach, a field operator φ(x,t) no longer a standard tempered operator-valued distribution, but a non-classical operator-valued function. We prove using this novel approach that the quantum field theory with Hamiltonian P(φ)_4 exists and that the corresponding C^*­ algebra of bounded observables satisfies all the Haag-Kastler axioms except Lorentz covariance. We prove that the λ(φ^2n )_4,n≥2 quantum field theory models are Lorentz covariant.
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  11. Effective Ontic Structural Realism.James Ladyman & Lorenzo Lorenzetti - forthcoming - British Journal for the Philosophy of Science.
    Three accounts of effective realism (ER) have been advanced to solve three problems for scientific realism: Fraser and Vickers (forthcoming) develop a version of ER about non-relativistic quantum mechanics that they argue is compatible with all the main realist versions (‘interpretations’) of quantum mechanics avoiding the problem of underdetermination among them; Williams (2019) and Fraser (2020b) propose ER about quantum field theory as a response to the problems facing realist interpretations; Robertson and Wilson (forthcoming) propose ER to deal with the (...)
    Remove from this list   Direct download (5 more)  
     
    Export citation  
     
    Bookmark  
  12. Real Virtuality and Actual Transitions: Historical Reflections on Virtual Entities before Quantum Field Theory.Alexander S. Blum & Martin Jähnert - 2024 - Perspectives on Science 32 (3):329-349.
    This paper studies the notion of virtuality in the Bohr-Kramers-Slater theory of 1924. We situate the virtual entities of BKS within the tradition of the correspondence principle and the radiation theory of the Bohr model. We show how, in this context, virtual oscillators emerged as classical substitute radiators and were used to describe the otherwise elusive quantum transitions. They played an effective role in the quantum theory of radiation while remaining categorically distinct and ontologically separated from the quantum world of (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  13. The causal axioms of algebraic quantum field theory: A diagnostic.Francisco Calderón - 2024 - Studies in History and Philosophy of Science Part A 104 (C):98-108.
    Algebraic quantum field theory (AQFT) puts forward three ``causal axioms'' that aim to characterize the theory as one that implements relativistic causation: the spectrum condition, microcausality, and primitive causality. In this paper, I aim to show, in a minimally technical way, that none of them fully explains the notion of causation appropriate for AQFT because they only capture some of the desiderata for relativistic causation I state or because it is often unclear how each axiom implements its respective desideratum. After (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  14. The Promise of Supersymmetry.Enno Fischer - 2024 - Synthese 203 (6):1-21.
    Supersymmetry (SUSY) has long been considered an exceptionally promising theory. A central role for the promise has been played by naturalness arguments. Yet, given the absence of experimental findings it is questionable whether the promise will ever be fulfilled. Here, I provide an analysis of the promises associated with SUSY, employing a concept of pursuitworthiness. A research program like SUSY is pursuitworthy if (1) it has the plausible potential to provide high epistemic gain and (2) that gain can be achieved (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  15. Eliminating the ‘Impossible’: Recent Progress on Local Measurement Theory for Quantum Field Theory.Maria Papageorgiou & Doreen Fraser - 2024 - Foundations of Physics 54 (3):1-75.
    Arguments by Sorkin (Impossible measurements on quantum fields. In: Directions in general relativity: proceedings of the 1993 International Symposium, Maryland, vol 2, pp 293–305, 1993) and Borsten et al. (Phys Rev D 104(2), 2021. https://doi.org/10.1103/PhysRevD.104.025012 ) establish that a natural extension of quantum measurement theory from non-relativistic quantum mechanics to relativistic quantum theory leads to the unacceptable consequence that expectation values in one region depend on which unitary operation is performed in a spacelike separated region. Sorkin [ 1 ] labels (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  16. Naturalness and the Forward-Looking Justification of Scientific Principles.Enno Fischer - 2023 - Philosophy of Science 90 (5):1050 - 1059.
    It has been suggested that particle physics has reached the "dawn of the post-naturalness era." I provide an explanation of the current shift in particle physicists' attitude towards naturalness. I argue that the naturalness principle was perceived to be supported by the theories it has inspired. The potential coherence between major beyond the Standard Model (BSM) proposals and the naturalness principle led to an increasing degree of credibility of the principle among particle physicists. The absence of new physics at the (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  17. The Coalescence Approach to Inequivalent Representation: Pre-QM ∞ Parallels.Caspar Jacobs - 2023 - British Journal for the Philosophy of Science 74 (4):1069-1090.
    Ruetsche ([2011]) argues that the occurrence of unitarily inequivalent representations in quantum theories with infinitely many degrees of freedom poses a novel interpretational problem. According to Ruetsche, such theories compel us to reject the so-called ideal of pristine interpretation; she puts forward the ‘coalescence approach’ as an alternative. In this paper I offer a novel defence of the coalescence approach. The defence rests on the claim that the ideal of pristine interpretation already fails before one considers the peculiarities of QM∞: (...)
    Remove from this list   Direct download (5 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  18. Taking Robots Beyond the Threshold of Awareness: Scientifically Founded Conditions for Artificial Consciousness.Joachim Keppler - 2023 - Proceedings of the 1St Workshop on Artificial Intelligence for Perception and Artificial Consciousness (Aixpac 2023), Ceur Workshop Proceedings, Volume 3563.
    To approach the creation of artificial conscious systems systematically and to obtain certainty about the presence of phenomenal qualities (qualia) in these systems, we must first decipher the fundamental mechanism behind conscious processes. In achieving this goal, the conventional physicalist position exhibits obvious shortcomings in that it provides neither a plausible mechanism for the generation of qualia nor tangible demarcation criteria for conscious systems. Therefore, to remedy the deficiencies of the standard physicalist approach, a new theory for the understanding of (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  19. Mathematical Formalism for Nonlocal Spontaneous Collapse in Quantum Field Theory.D. W. Snoke - 2023 - Foundations of Physics 53 (2):1-24.
    Previous work has shown that spontaneous collapse of Fock states of identical fermions can be modeled as arising from random Rabi oscillations between two states. In this paper, a mathematical formalism is presented to incorporate this into many-body quantum field theory. This formalism allows for nonlocal collapse in the context of a relativistic system. While there is no absolute time-ordering of events, this approach allows for a coherent narrative of the collapse process.
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  20. Causal Lie Products of Free Fields and the Emergence of Quantum Field Theory.Detlev Buchholz, Roberto Longo & Karl-Henning Rehren - 2022 - Foundations of Physics 52 (5):1-7.
    All causal Lie products of solutions of the Klein-Gordon equation and the wave equation in Minkowski space are determined. The results shed light on the origin of the algebraic structures underlying quantum field theory.
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  21. Four Attitudes Towards Singularities in the Search for a Theory of Quantum Gravity.Karen Crowther & Sebastian De Haro - 2022 - In Antonio Vassallo (ed.), The Foundations of Spacetime Physics: Philosophical Perspectives. New York, NY: Routledge. pp. 223-250.
    Singularities in general relativity and quantum field theory are often taken not only to motivate the search for a more-fundamental theory (quantum gravity, QG), but also to characterise this new theory and shape expectations of what it is to achieve. Here, we first evaluate how particular types of singularities may suggest an incompleteness of current theories. We then classify four different 'attitudes' towards singularities in the search for QG, and show, through examples in the physics literature, that these lead to (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark   1 citation  
  22. From Bohm’s Vision of Quantum Processes to Quantum Field Theory... to the Transactional Approach. Variations on the Theme. [REVIEW]Davide Fiscaletti - 2022 - Foundations of Physics 52 (3):1-25.
    The vision of quantum physics developed by David Bohm, and especially the idea of the implicit order, can be considered the true epistemological foundation of quantum field theory and the idea of a quantum vacuum that underlies the observable forms of matter, energy and space-time. Assuming the non-locality as the crucial visiting card of quantum processes, it is thus possible to arrive directly to the transactional interpretation and to the idea of a non-local quantum vacuum in which the behaviour of (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  23. Particles in Quantum Field Theory.Doreen Fraser - 2022 - In Eleanor Knox & Alastair Wilson (eds.), The Routledge Companion to Philosophy of Physics. London, UK: Routledge. pp. 323-336.
    The consensus view among philosophers of physics is that relativistic quantum field theory does not describe particles. That is, according to QFT, particles are not fundamental entities. How is this negative conclusion compatible with the positive role that the particle notion plays in particle physics? The first part of this chapter lays out multiple lines of negative argument that all conclude that QFT cannot be given a particle interpretation. These arguments probe the properties of the `particles' in standard formulations of (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark   3 citations  
  24. Spacetime "Emergence".Nick Huggett - 2022 - In Eleanor Knox & Alastair Wilson (eds.), The Routledge Companion to Philosophy of Physics. London, UK: Routledge.
    Could spacetime be derived rather than fundamental? The question is pressing because attempts to quantize gravity have led to theories in which (arguably) there are either no, or only extremely thin, spacetime structures. Moreover, recent proposals for the interpretation of quantum mechanics have suggested that 3-dimensional space may be an ‘appearance’ derived from the 3N-dimensional space in which an N-particle wavefunction lives (cross- reference). In fact, I will largely assume a positive answer, and investigate how it could be; in particular, (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark   3 citations  
  25. A current need for continuity.Nils Patrik Svensson - 2022 - Diva.
    Throughout these last few decades, phenomenology and modern physics have slowly started to approach each other in order to bridge the gap between subjective and objective. In this thesis I aim to show an approach done with the help of Karen Barad's agential realism; a quantum interpretation enabling us to better understand and analyse our complex world, as well as our perception of it. Taking inspiration from new materialism, phenomenology, and physics, I see a need to properly leave discrete dualism (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  26. On the Ostrogradski Instability; or, Why Physics Really Uses Second Derivatives.Noel Swanson - 2022 - British Journal for the Philosophy of Science 73 (1):23-46.
    Candidates for fundamental physical laws rarely, if ever, employ higher than second time derivatives. Easwaran sketches an enticing story that purports to explain away this puzzling fact and thereby provides indirect evidence for a particular set of metaphysical theses used in the explanation. I object to both the scope and coherence of Easwaran's account, before going on to defend an alternative, more metaphysically deflationary explanation: in interacting Lagrangian field theories, it is either impossible or very hard to incorporate higher than (...)
    Remove from this list   Direct download (6 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  27. Renormalization Group Methods.Porter Williams - 2022 - In Eleanor Knox & Alastair Wilson (eds.), The Routledge Companion to Philosophy of Physics. London, UK: Routledge.
    This is an introduction to renormalization group methods in quantum field theory aimed at philosophers of science. review path integral methods, the relationship between early renormalization theory and renormalization group methods, and conceptual shifts in thinking about quantum field theory spurred by the development of renormalization group methods.
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  28. Gauge Invariance for Classical Massless Particles with Spin.Jacob A. Barandes - 2021 - Foundations of Physics 51 (1):1-14.
    Wigner's quantum-mechanical classification of particle-types in terms of irreducible representations of the Poincaré group has a classical analogue, which we extend in this paper. We study the compactness properties of the resulting phase spaces at fixed energy, and show that in order for a classical massless particle to be physically sensible, its phase space must feature a classical-particle counterpart of electromagnetic gauge invariance. By examining the connection between massless and massive particles in the massless limit, we also derive a classical-particle (...)
    Remove from this list   Direct download (7 more)  
     
    Export citation  
     
    Bookmark   4 citations  
  29. On Magnetic Forces and Work.Jacob A. Barandes - 2021 - Foundations of Physics 51 (4):1-17.
    We address a long-standing debate over whether classical magnetic forces can do work, ultimately answering the question in the affirmative. In detail, we couple a classical particle with intrinsic spin and elementary dipole moments to the electromagnetic field, derive the appropriate generalization of the Lorentz force law, show that the particle's dipole moments must be collinear with its spin axis, and argue that the magnetic field does mechanical work on the particle's elementary magnetic dipole moment. As consistency checks, we calculate (...)
    Remove from this list   Direct download (5 more)  
     
    Export citation  
     
    Bookmark   3 citations  
  30. I ain’t afraid of no ghost.John Dougherty - 2021 - Studies in History and Philosophy of Science Part A 88 (C):70-84.
    This paper criticizes the traditional philosophical account of the quantization of gauge theories and offers an alternative. On the received view, gauge theories resist quantization because they feature distinct mathematical representatives of the same physical state of affairs. This resistance is overcome by a sequence of ad hoc modifications, justified in part by reference to semiclassical electrodynamics. Among other things, these modifications introduce "ghosts": particles with unphysical properties which do not appear in asymptotic states and which are said to be (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    Bookmark   2 citations  
  31. Quantum Field Theory Formulated as a Markov Process Determined by Local Configuration.Jun Ni - 2021 - Foundations of Physics 51 (3):1-17.
    We propose the quantum field formalism as a new type of stochastic Markov process determined by local configuration. Our proposed Markov process is different with the classical one, in which the transition probability is determined by the state labels related to the character of state. In the new quantum Markov process, the transition probability is determined not only by the state character, but also by the occupation of the state. Due to the probability occupation of the state, the classical relation (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  32. Drawing scales apart: The origins of Wilson's conception of effective field theories.Sébastien Rivat - 2021 - Studies in History and Philosophy of Science Part A 90 (C):321-338.
    This article traces the origins of Kenneth Wilson's conception of effective field theories (EFTs) in the 1960s. I argue that what really made the difference in Wilson's path to his first prototype of EFT are his long-standing pragmatic aspirations and methodological commitments. Wilson's primary interest was to work on mathematically interesting physical problems and he thought that progress could be made by treating them as if they could be analyzed in principle by a sufficiently powerful computer. The first point explains (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark   3 citations  
  33. Large gauge transformations and the strong CP problem.John Dougherty - 2020 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 69:50-66.
    According to the Standard Model of particle physics, some gauge transformations are physical symmetries. That is, they are mathematical transformations that relate representatives of distinct physical states of affairs. This is at odds with the standard philosophical position according to which gauge transformations are an eliminable redundancy in a gauge theory's representational framework. In this paper I defend the Standard Model's treatment of gauge from an objection due to Richard Healey. If we follow the Standard Model in taking some gauge (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark   4 citations  
  34. Ontological Investigations in the Quantum Domain: A deflationary approach on ontology of physics.Lauro de Matos Nunes Filho - 2020 - Dissertation, Federal University of Santa Catarina
    The aim of this thesis is to propose a deflationary approach towards the ontological analysis of physical theories. Such an approach sustains that the development of ontologies for physical theories must be neutral relatively to the debate between realists and anti-realists in philosophy of physics. Mainly, our attention will be oriented towards what we called "quantum domain", which includes the non-relativistic Quantum Mechanics and variants of the Quantum Field Theory. This meta-ontological approach consists in an attempt to provide a methodology (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  35. Toward a realist view of quantum field theory.James D. Fraser - 2020 - In Steven French & Juha Saatsi (eds.), Scientific Realism and the Quantum. Oxford: Oxford University Press.
    Remove from this list  
     
    Export citation  
     
    Bookmark   8 citations  
  36. The dissipative approach to quantum field theory: conceptual foundations and ontological implications.Andrea Oldofredi & Hans Christian Öttinger - 2020 - European Journal for Philosophy of Science 11 (1):1-36.
    Many attempts have been made to provide Quantum Field Theory with conceptually clear and mathematically rigorous foundations; remarkable examples are the Bohmian and the algebraic perspectives respectively. In this essay we introduce the dissipative approach to QFT, a new alternative formulation of the theory explaining the phenomena of particle creation and annihilation starting from nonequilibrium thermodynamics. It is shown that DQFT presents a rigorous mathematical structure, and a clear particle ontology, taking the best from the mentioned perspectives. Finally, after the (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark   3 citations  
  37. Effective theories and infinite idealizations: a challenge for scientific realism.Sébastien Rivat - 2020 - Synthese 198 (12):12107-12136.
    Williams and J. Fraser have recently argued that effective field theory methods enable scientific realists to make more reliable ontological commitments in quantum field theory than those commonly made. In this paper, I show that the interpretative relevance of these methods extends beyond the specific context of QFT by identifying common structural features shared by effective theories across physics. In particular, I argue that effective theories are best characterized by the fact that they contain intrinsic empirical limitations, and I extract (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark   9 citations  
  38. Philosophical foundations of effective field theories.Sébastien Rivat & Alexei Grinbaum - 2020 - European Physical Journal A 56 (3).
    This survey covers some of the main philosophical debates raised by the framework of effective field theories during the last decades. It is centered on three issues: whether effective field theories underpin a specific realist picture of the world, whether they support an anti-reductionist picture of physics, and whether they provide reasons to give up the ultimate aspiration of formulating a final and complete physical theory. Reviewing the past and current literature, we argue that effective field theories do not give (...)
    Remove from this list  
     
    Export citation  
     
    Bookmark   9 citations  
  39. How to Be a Relativistic Spacetime State Realist.Noel Swanson - 2020 - British Journal for the Philosophy of Science 71 (3):933-957.
    According to spacetime state realism, the fundamental ontology of a quantum mechanical world consists of a state-valued field evolving in four-dimensional spacetime. One chief advantage it claims over rival wave-function realist views is its natural compatibility with relativistic quantum field theory. I argue that the original density operator formulation of SSR cannot be extended to QFTs where the local observables form type III von Neumann algebras. Instead, I propose a new formulation of SSR in terms of a presheaf of local (...)
    Remove from this list   Direct download (6 more)  
     
    Export citation  
     
    Bookmark   11 citations  
  40. On the nature of the Higgs boson.Damiano Anselmi - 2019 - Mod. Phys. Lett. A 34.
    Several particles are not observed directly, but only through their decay products. We consider the possibility that they might be fakeons, i.e. fake particles, which mediate interactions but are not asymptotic states. A crucial role to determine the true nature of a particle is played by the imaginary parts of the one-loop radiative corrections, which are affected in nontrivial ways by the presence of fakeons in the loop. The knowledge we have today is sufficient to prove that most non directly (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  41. Empirical incoherence and double functionalism.Sam Baron - 2019 - Synthese (Suppl 2):1-27.
    Recent work on quantum gravity suggests that neither spacetime nor spatiotemporally located entites exist at a fundamental level. The loss of both brings with it the threat of empirical incoherence. A theory is empirically incoherent when the truth of that theory undermines the empirical justification for believing it. If neither spacetime nor spatiotemporally located entities exist as a part of a fundamental theory of QG, then such a theory seems to imply that there are no observables and so no way (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark   3 citations  
  42. Renormalization scrutinized.Sébastien Rivat - 2019 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 68:23-39.
    In this paper, I propose a general framework for understanding renormalization by drawing on the distinction between effective and continuum Quantum Field Theories (QFTs), and offer a comprehensive account of perturbative renormalization on this basis. My central claim is that the effective approach to renormalization provides a more physically perspicuous, conceptually coherent and widely applicable framework to construct perturbative QFTs than the continuum approach. I also show how a careful comparison between the two approaches: (i) helps to dispel the mystery (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark   10 citations  
  43. Naturalness, Hierarchy, and Fine-Tuning.Joshua Rosaler, Robert Harlander, Gregor Schiemann & Miguel Ángel Carretero Sahuquillo - 2019 - Foundations of Physics 49 (9):855-859.
    The requirement of naturalness has long served as an influential constraint on model-building in theoretical particle physics. Yet there are many ways of understanding what, precisely, this requirement amounts to, from restrictions on the amount of fine-tuning that a model can exhibit, to prohibitions on sensitive dependence between physics at different scales, to the requirement that dimensionless parameters defining the Lagrangian of a theory all be of order one unless they are protected by a symmetry. This workshop aims to clarify (...)
    Remove from this list   Direct download (3 more)  
     
    Export citation  
     
    Bookmark  
  44. Preface to Naturalness, Hierarchy, and Fine-Tuning.Joshua Rosaler, Robert Harlander, Gregor Schiemann & Miguel Ángel Carretero Sahuquillo - 2019 - Foundations of Physics 49 (9):855-859.
    The requirement of naturalness has long served as an influential constraint on model-building in theoretical particle physics. Yet there are many ways of understanding what, precisely, this requirement amounts to, from restrictions on the amount of fine-tuning that a model can exhibit, to prohibitions on sensitive dependence between physics at different scales, to the requirement that dimensionless parameters defining the Lagrangian of a theory all be of order one unless they are protected by a symmetry. This workshop aims to clarify (...)
    Remove from this list   Direct download (2 more)  
     
    Export citation  
     
    Bookmark  
  45. Deciphering the algebraic CPT theorem.Noel Swanson - 2019 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 68:106-125.
    The CPT theorem states that any causal, Lorentz-invariant, thermodynamically well-behaved quantum field theory must also be invariant under a reflection symmetry that reverses the direction of time, flips spatial parity, and conjugates charge. Although its physical basis remains obscure, CPT symmetry appears to be necessary in order to unify quantum mechanics with relativity. This paper attempts to decipher the physical reasoning behind proofs of the CPT theorem in algebraic quantum field theory. Ultimately, CPT symmetry is linked to a systematic reversal (...)
    Remove from this list   Direct download (4 more)  
     
    Export citation  
     
    Bookmark   1 citation  
  46. Reduction and Emergence in Science and Philosophy By Carl Gillett Cambridge University Press, 2016. 389pp., £52.99 ISBN: 9781107075351. [REVIEW]Karen Crowther - 2018 - Philosophy 93 (4):586-590.
  47. The Nature of Representation in Feynman Diagrams.Mauro Dorato & Emanuele Rossanese - 2018 - Perspectives on Science 26 (4):443-458.
    After a brief presentation of Feynman diagrams, we criticizise the idea that Feynman diagrams can be considered to be pictures or depictions of actual physical processes. We then show that the best interpretation of the role they play in quantum field theory and quantum electrodynamics is captured by Hughes' Denotation, Deduction and Interpretation theory of models, where “models” are to be interpreted as inferential, non-representational devices constructed in given social contexts by the community of physicists.
    Remove from this list   Direct download (8 more)  
     
    Export citation  
     
    Bookmark   4 citations  
  48. Whence the Effectiveness of Effective Field Theories?Alexander Franklin - 2018 - British Journal for the Philosophy of Science 71 (4):1235-1259.
    Effective quantum field theories are effective insofar as they apply within a prescribed range of length-scales, but within that range they predict and describe with extremely high accuracy and precision. The effectiveness of EFTs is explained by identifying the features—the scaling behaviour of the parameters—that lead to effectiveness. The explanation relies on distinguishing autonomy with respect to changes in microstates, from autonomy with respect to changes in microlaws, and relating these, respectively, to renormalizability and naturalness. It is claimed that the (...)
    Remove from this list   Direct download (6 more)  
     
    Export citation  
     
    Bookmark   11 citations  
  49. A 4*4 Schroedinger equation from relativistic total energy with a 2*2 Lorentz invariant solution.Han Geurdes - 2018 - High Energy Density Physics 26:10.1016/j.hedp.2017.12.004.
    Abstract In this paper an algebraic method is presented to derive a 4 × 4 Hermitian Schrödinger equation from with and . The latter operator replacement is a common procedure in a quantum description of the total energy. In the derivation we don’t make use of Dirac’s method of four vectors. Moreover, the root operator isn’t squared either. Instead, use is made of the algebra of operators to derive a Hermitian matrix Schrödinger equation. We believe that new physics can be (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark  
  50. A Scientific Metaphysical Naturalisation of Information.Bruce Long - 2018 - Dissertation, University of Sydney
    The objective of this thesis is to present a naturalised metaphysics of information, or to naturalise information, by way of deploying a scientific metaphysics according to which contingency is privileged and a-priori conceptual analysis is excluded (or at least greatly diminished) in favour of contingent and defeasible metaphysics. The ontology of information is established according to the premises and mandate of the scientific metaphysics by inference to the best explanation, and in accordance with the idea that the primacy of physics (...)
    Remove from this list   Direct download  
     
    Export citation  
     
    Bookmark   1 citation  
1 — 50 / 256