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  1. added 2019-02-07
    Naturalness, the Autonomy of Scales, and the 125GeV Higgs.Porter Williams - 2015 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 51:82-96.
    The recent discovery of the Higgs at 125 GeV by the ATLAS and CMS experiments at the LHC has put significant pressure on a principle which has guided much theorizing in high energy physics over the last 40 years, the principle of naturalness. In this paper, I provide an explication of the conceptual foundations and physical significance of the naturalness principle. I argue that the naturalness principle is well-grounded both empirically and in the theoretical structure of effective field theories, and (...)
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  2. added 2019-01-21
    Mathematical Electron Model and the SI Unit 2017 Special Adjustment.Malcolm J. Macleod - manuscript
    Following the 26th General Conference on Weights and Measures are fixed the numerical values of the 4 physical constants ($h, c, e, k_B$). This is premised on the independence of these constants. This article discusses a model of a mathematical electron from which can be defined the Planck units as geometrical objects (mass M=1, time T=2$\pi$ ...). In this model these objects are interrelated via this electron geometry such that once we have assigned values to 2 Planck units then we (...)
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  3. added 2018-08-14
    Appareil, image et particule.Alexandre Guay - 2007 - In Marion Froger, Sylvestra Mariniello & Jean-Louis Déotte (eds.), Appareil et Intermédialité. l’Harmattan.
    This chapter (in French) compares the ways to access to events in science and in art. In particular, the Déotte's concept of "appareil" is discussed. To be published in Jean-Louis Déotte and Sylvestra Mariniello (ed.), Appareil et Intermédialité, L'Harmattan, 2007.
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  4. added 2018-07-21
    A Brief History of Time: From the Big Bang to Black Holes by Stephen Hawking. [REVIEW]Leemon McHenry - 1989 - Review of Metaphysics 46:626-628.
  5. added 2018-07-13
    Emergence Without Limits: The Case of Phonons.Alexander Franklin & Eleanor Knox - 2018 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 64:68-78.
    Recent discussions of emergence in physics have focussed on the use of limiting relations, and often particularly on singular or asymptotic limits. We discuss a putative example of emergence that does not fit into this narrative: the case of phonons. These quasi-particles have some claim to be emergent, not least because the way in which they relate to the underlying crystal is almost precisely analogous to the way in which quantum particles relate to the underlying quantum field theory. But there (...)
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  6. added 2018-06-08
    Time Reversal Invariance in Quantum Mechanics.Reza Moulavi Ardakani - 2017 - Dissertation, Texas Tech University
    Symmetries have a crucial role in today’s physics. In this thesis, we are mostly concerned with time reversal invariance (T-symmetry). A physical system is time reversal invariant if its underlying laws are not sensitive to the direction of time. There are various accounts of time reversal transformation resulting in different views on whether or not a given theory in physics is time reversal invariant. With a focus on quantum mechanics, I describe the standard account of time reversal and compare it (...)
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  7. added 2018-05-30
    Comparison of Quark Mixing in the Standard and Generational Models.Peter W. Evans & Brian A. Robson - 2006 - International Journal of Modern Physics E 15:617--625.
    The different interpretations of quark mixing involved in weak interaction processes in the Standard Model and the Generation Model are discussed with a view to obtaining a physical understanding of the Cabibbo angle and related quantities. It is proposed that hadrons are composed of mixed-quark states, with the quark mixing parameters being determined by the Cabibbo-Kobayashi-Maskawa matrix elements. In this model, protons and neutrons contain a contribution of about 5% and 10%, respectively, of strange valency quarks.
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  8. added 2018-05-22
    A Search for New Physics in High-Mass Ditau Events in the ATLAS Detector.Ryan Reece - 2013 - Dissertation, University of Pennsylvania
    This thesis is a work of experimental physics, a search for new physics with the ATLAS experiment. I post this thesis on the PhilArchive because it includes a pedagogical summary of quantum mechanics and the standard model of particle physics in the combination of chapters 1-2 and appendix A. This was my attempt at the end of my PhD of giving a bird's eye view of the standard model, with a thorough bibliography of the publication trail that lead to its (...)
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  9. added 2018-04-27
    Simplified Models: A Different Perspective on Models as Mediators.C. D. McCoy & Michela Massimi - 2018 - European Journal for Philosophy of Science 8 (1):99-123.
    We introduce a novel point of view on the “models as mediators” framework in order to emphasize certain important epistemological questions about models in science which have so far been little investigated. To illustrate how this perspective can help answer these kinds of questions, we explore the use of simplified models in high energy physics research beyond the Standard Model. We show in detail how the construction of simplified models is grounded in the need to mitigate pressing epistemic problems concerning (...)
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  10. added 2018-04-24
    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 (...)
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  11. added 2018-02-17
    Physical Composition.Richard Healey - 2013 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 44 (1):48-62.
    Atomistic metaphysics motivated an explanatory strategy which science has pursued with great success since the scientific revolution. By decomposing matter into its atomic and subatomic parts physics gave us powerful explanations and accurate predictions as well as providing a unifying framework for the rest of science. The success of the decompositional strategy has encouraged a widespread conviction that the physical world forms a compositional hierarchy that physics and other sciences are progressively articulating. But this conviction does not stand up to (...)
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  12. added 2018-02-16
    Are All Particles Real?Sheldon Goldstein, James Taylor, Roderich Tumulka & Nino Zanghi - 2004 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 36 (1):103-112.
    In Bohmian mechanics elementary particles exist objectively, as point particles moving according to a law determined by a wavefunction. In this context, questions as to whether the particles of a certain species are real---questions such as, Do photons exist? Electrons? Or just the quarks?---have a clear meaning. We explain that, whatever the answer, there is a corresponding Bohm-type theory, and no experiment can ever decide between these theories. Another question that has a clear meaning is whether particles are intrinsically distinguishable, (...)
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  13. added 2018-01-16
    Concepts of Mass in Contemporary Physics and Philosophy.Max Jammer - 2009 - Princeton University Press.
    The concept of mass is one of the most fundamental notions in physics, comparable in importance only to those of space and time. But in contrast to the latter, which are the subject of innumerable physical and philosophical studies, the concept of mass has been but rarely investigated. Here Max Jammer, a leading philosopher and historian of physics, provides a concise but comprehensive, coherent, and self-contained study of the concept of mass as it is defined, interpreted, and applied in contemporary (...)
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  14. added 2018-01-10
    Non-Minimal Coupling of the Higgs Boson to Curvature in an Inflationary Universe.Xavier Calmet, Iberê Kuntz & Ian G. Moss - 2018 - Foundations of Physics 48 (1):110-120.
    In the absence of new physics around \ GeV, the electroweak vacuum is at best metastable. This represents a major challenge for high scale inflationary models as, during the early rapid expansion of the universe, it seems difficult to understand how the Higgs vacuum would not decay to the true lower vacuum of the theory with catastrophic consequences if inflation took place at a scale above \ GeV. In this paper we show that the non-minimal coupling of the Higgs boson (...)
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  15. added 2018-01-10
    Inelastic Scattering of Fast Electrons by Crystals.C. J. Humphreys & M. J. Whelan - 1969 - Philosophical Magazine 20 (163):165-172.
  16. added 2018-01-10
    The Multiple Scattering of Particles of Opposite Charge.I. S. Hughes & D. Sinclair - 1959 - Philosophical Magazine 4 (45):1013-1016.
  17. added 2017-12-19
    Quantum Gravity and Taoist Cosmology: Exploring the Ancient Origins of Phenomenological String Theory.Steven M. Rosen - 2017 - Progress in Biophysics and Molecular Biology 131:34-60.
    In the author’s previous contribution to this journal (Rosen 2015), a phenomenological string theory was proposed based on qualitative topology and hypercomplex numbers. The current paper takes this further by delving into the ancient Chinese origin of phenomenological string theory. First, we discover a connection between the Klein bottle, which is crucial to the theory, and the Ho-t’u, a Chinese number archetype central to Taoist cosmology. The two structures are seen to mirror each other in expressing the psychophysical (phenomenological) action (...)
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  18. added 2017-12-08
    Annual Modulation Experiments, Galactic Models and WIMPs.Robert G. Hudson - 2007 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 38 (1):97-119.
  19. added 2017-12-08
    Annual Modulation Experiments, Galactic Models and WIMPs.Robert G. Hudson - 2006 - Studies in History and Philosophy of Modern Physics 38 (1):97-119.
  20. added 2017-12-08
    Principles and the Development of Physical Theory: Case Studies.Robert Corby Hovis - 1994 - Dissertation, Cornell University
    Three separate articles make up the chapters of this dissertation. They were written with different aims and audiences in mind, but each deals in some way with one or more "principles" that have been invoked in argumentation and explanation in the physical sciences. The principles of concern are propositions which have an "aesthetic" or "foundational" or "philosophical" character and which are generally believed to be widely applicable or particularly powerful--for example, the Principle of Plenitude, the Principle of Mathematical Beauty, Occam's (...)
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  21. added 2017-12-05
    Dark Matter, Dark Energy and Modern Cosmology: The Case For a Kuhnian Paradigm Shift.Jorge Horvath - 2009 - Cosmos and History 5 (2):287-303.
    Several works in the last few years devoted to measure fundamental probes of contemporary cosmology have suggested the existence of a delocalized dominant component , in addition to the several-decade-old evidence for “dark matter” other than ordinary baryons, both assuming the description of gravity to be correct. Either we are faced to accept the ignorance of at least 95 % of the content of the universe or consider a deep change of the conceptual framework to understand the data. Thus, the (...)
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  22. added 2017-11-28
    Order Out of Chaos? A Case Study in High Energy Physics.Rafaela Hillerbrand - 2012 - Studia Philosophica Estonica 5 (2):61-78.
    In recent years, computational sciences such as computational hydrodynamics or computational field theory have supplemented theoretical and experimental investigations in many scientific fields. Often, there is a seemingly fruitful overlap between theory, experiment, and numerics. The computational sciences are highly dynamic and seem a fairly successful endeavor---at least if success is measured in terms of publications or engineering applications. However, for theories, success in application and correctness are two very different things; and just the same may hold for "methodologies" like (...)
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  23. added 2017-11-25
    The Formation of Dislocation Loops in Copper During Neutron Irradiation.R. V. Hesketh - 1962 - Philosophical Magazine 7 (75):519-521.
  24. added 2017-11-25
    The Amazing Electron.Victor F. Hess - 1947 - Thought: Fordham University Quarterly 22 (1):190-191.
  25. added 2017-11-25
    Classical and Modern Physics.Victor Francis Hess - 1941 - Thought: Fordham University Quarterly 16 (1):199-200.
  26. added 2017-11-25
    The Discovery of Cosmic Radiation.Victor Francis Hess - 1940 - Thought: Fordham University Quarterly 15 (2):225-236.
  27. added 2017-11-24
    A Unified Field Theory.Miles Valzah Hayevans - 1964 - Stinehour Press.
  28. added 2017-11-06
    Particles, Fields and a Canonical Distance Form.A. N. Grigorenko - 2016 - Foundations of Physics 46 (3):382-392.
    We examine a notion of an elementary particle in classical physics and suggest that its existence requires non-trivial homotopy of space-time. We show that non-trivial homotopy may naturally arise for space-times in which metric relations are generated by a canonical distance form factorized by a Weyl field. Some consequences of the presence of a Weyl field are discussed.
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  29. added 2017-11-01
    A Search for Electron Capture in176Lu.R. N. Glover & D. E. Watt - 1957 - Philosophical Magazine 2 (17):699-702.
  30. added 2017-10-26
    The Machine Speaks Falsely.Allan Franklin - 2010 - Spontaneous Generations 4 (1):71-84.
    How can one determine if an experimental apparatus is giving an incorrect result, if it is speaking falsely? An interesting example of this occurred in the experimental investigation, in the early twentieth century, of the energy spectrum of electrons emitted in β decay. Meitner and her collaborators (1911), using photographic detection, found that all the electrons emitted by a single radioactive element were monoenergetic. Chadwick (1914), on the other hand, using either an ionization chamber or a Geiger counter, found a (...)
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  31. added 2017-10-26
    The Discovery and Nondiscovery of Parity Nonconservation.Allan Franklin - 1979 - Studies in History and Philosophy of Science Part A 10 (3):201-257.
  32. added 2017-10-26
    The Excitation of a 2.79 MeV Level in19F by Inelastic Neutron Scattering.Joan M. Freeman - 1957 - Philosophical Magazine 2 (17):628-634.
  33. added 2017-10-26
    LXI. The Levels of19F From Inelastic Neutron Scattering.Joan M. Freeman - 1956 - Philosophical Magazine 1 (7):591-604.
  34. added 2017-10-24
    Neutrino Oscillations with Nil Mass.Edward R. Floyd - 2017 - Foundations of Physics 47 (1):42-60.
    An alternative neutrino oscillation process is presented as a counterexample for which the neutrino may have nil mass consistent with the standard model. The process is developed in a quantum trajectories representation of quantum mechanics, which has a Hamilton–Jacobi foundation. This process has no need for mass differences between mass eigenstates. Flavor oscillations and \ oscillations are examined.
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  35. added 2017-10-22
    Mesoscale Strain Measurement in Deformed Crystals: A Comparison of X-Ray Microdiffraction with Electron Backscatter Diffraction.D. P. Field, K. R. Magid, I. N. Mastorakos, J. N. Florando, D. H. Lassila & J. W. Morris - 2010 - Philosophical Magazine 90 (11):1451-1464.
  36. added 2017-10-13
    Supersymmetric Duality in Deformed Superloop Space.Mir Faizal & Tsou Sheung Tsun - 2015 - Foundations of Physics 45 (11):1421-1432.
    In this paper, we will analyse the superloop space formalism for a four dimensional supersymmetric Yang–Mills theory in deformed superspace. We will deform the \ superspace by imposing imposing non-anticommutativity. This non-anticommutative deformation of the superspace will break half the supersymmetry of the original theory. So, this theory will have \ supersymmetry. We will analyse the superloop space duality for this deformed supersymmetric Yang–Mills theory using the \ superspace formalism. We will demonstrate that the sources in the original theory will (...)
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  37. added 2017-10-13
    Pragmatic Unification, Observation and Realism in Astroparticle Physics.Brigitte Falkenburg - 2012 - Journal for General Philosophy of Science / Zeitschrift für Allgemeine Wissenschaftstheorie 43 (2):327-345.
    Astroparticle physics is a recent sub-discipline of physics that emerged from early cosmic ray studies, astrophysics, and particle physics. Its theoretical foundations range from quantum field theory to general relativity, but the underlying “standard models” of cosmology and particle physics are far from being unified. The paper explores the pragmatic strategies employed in astroparticle physics in order to unify a disunified research field, the concept of observation involved in these strategies, and their relations to scientific realism.
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  38. added 2017-10-13
    Corpuscles, Electrons and Cathode Rays: J.J. Thomson and the ‘Discovery of the Electron’.Isobel Falconer - 1987 - British Journal for the History of Science 20 (3):241-276.
    On 30 April, 1897, J. J. Thomson announced the results of his previous four months' experiments on cathode rays. The rays, he suggested, were negatively charged subatomic particles. He called the particles ‘corpuscles’. They have since been re-named ‘electrons’ and Thomson has been hailed as their ‘discoverer’. Contrary to the accounts of most later writers, I show that this discovery was not the outcome of a concern with the nature of cathode rays which had occupied Thomson since 1881 and had (...)
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  39. added 2017-10-10
    Relativistic Theory of Meson-Nucleon Scattering.S. F. Edwards & P. T. Matthews - 1957 - Philosophical Magazine 2 (16):467-472.
  40. added 2017-10-08
    Quantum Entanglement and Uncertainty Principle.Michele Caponigro - manuscript
    We argue about quantum entanglement and the uncertainty principle through the tomographic approach. In the end of paper, we infer some epistemological implications.
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  41. added 2017-10-06
    Philosophy and Interpretations of Quantum Mechanics.Michele Caponigro - manuscript
    This paper is a critical suvery on the philosophy and the Interpretations of Quantum Mechanics.
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  42. added 2017-10-06
    Geometrie Und Materie — Ist Einsteins Vision Übertragbar Auf Die Elementarteilchenphysik?Wolfgang Drechsler - 1984 - Journal for General Philosophy of Science / Zeitschrift für Allgemeine Wissenschaftstheorie 15 (1):1-21.
    Summary The philosophical implications associated with the choice of a particular geometry required for the formulation of a dynamics at subnuclear distances are discussed. A dualism between geometry and matter — the former identified with a fiber bundle of Cartan type raised over space-time, the latter represented by a generalized quantum mechanical wave function — is presented as a possible framework for the dynamics of strongly interacting particles at distances of 10-13 cm.
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  43. added 2017-10-05
    Philosophy and Interpretations of Quantum Non-Locality.Michele Caponigro - manuscript
    In this brief paper, we argue about some epistemological positions about quantum non-locality.
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  44. added 2017-10-04
    Detection of Negative Energy: 4-Dimensional Examples.Paul Davies - manuscript
    We study the response of switched particle detectors to static negative energy densities and negative energy fluxes. It is demonstrated how the switching leads to excitation even in the vacuum and how negative energy can lead to a suppression of this excitation. We obtain quantum inequalities on the detection similar to those obtained for the energy density by Ford and co-workers and in an ‘‘operational’’ context by Helfer. We reexamine the question ‘‘Is there a quantum equivalence principle?’’ in terms of (...)
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  45. added 2017-10-04
    Quantum Entanglement: Epistemological Overview.Michele Caponigro - manuscript
    In this paper, we will introduce a brief history of Quantum Entanglement (QE) with reference to important works: 1) Jaeger (Jaeger 2010) and 2) Emerson (Emerson, 2009).
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  46. added 2017-10-04
    Tachyonic Dark Matter.Paul Davies - manuscript
    Recent attempts to explain the dark matter and energy content of the universe have involved some radical extensions of standard physics, including quintessence, phantom energy, additional space dimensions, and variations in the speed of light. In this paper I consider the possibility that some dark matter might be in the form of tachyons. I show that, subject to some reasonable assumptions, a tachyonic cosmological fluid would produce distinctive effects, such as a surge in quantum vacuum energy and particle creation, and (...)
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  47. added 2017-10-04
    A. Cappelli, E. Castellani, F. Colomo and P. Di Vecchia : The Birth of String Theory.Sebastian de Haro, Jans Henke & Darrell Tang - 2015 - Foundations of Physics 45 (6):657-660.
    The Birth of String Theory by Cappelli et al. tells the story of the beginnings of string theory and of the evolutionary process it has undergone from its origins in S-matrix theory to its current status as a candidate unification theory. The book is intended for an audience of students and researchers in physics, as well as historians and philosophers of science with some background in quantum field theory.In the 50s and early 60s, theoretical particle physics focused on formulating a (...)
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  48. added 2017-10-04
    LXXXIV. The Elastic Scattering of Protons by Light Elements.G. Dearnaley - 1956 - Philosophical Magazine 1 (9):821-834.
  49. added 2017-10-03
    Time Variation of the Coupling Constants.P. C. W. Davies - unknown
    of a logarithmic time dependence of the fine structure constant is apparently within the limits discussed if there is a corresponding logarithmic time dependence of the strong coupling constant also. Moreover the recent discover> of naturally occurring ' Pu places the Gamow hypothesis of e' r much nearer the allov'able limits than had previously been supposed.
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  50. added 2017-10-03
    On the Mössbauer Effect and the Rigid Recoil Question.Mark Davidson - 2017 - Foundations of Physics 47 (3):327-354.
    The rigid recoil of a crystal is the accepted mechanism for the Mössbauer effect. It’s at odds with the special theory of relativity which does not allow perfectly rigid bodies. The standard model of particle physics which includes QED should not allow any signals to be transmitted faster than the speed of light. If perturbation theory can be used, then the X-ray emitted in a Mössbauer decay must come from a single nuclear decay vertex at which the 4-momentum is exactly (...)
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