Results for ' Electromagnetic Fields'

999 found
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  1. Electromagnetic-Field Theories of Mind.Mostyn W. Jones - 2013 - Journal of Consciousness Studies 20 (11-12):124-149.
    Neuroscience investigates how neuronal processing circuits work, but it has problems explaining experiences this way. For example, it hasn’t explained how colour and shape circuits bind together in visual processing, nor why colours and other qualia are experienced so differently yet processed by circuits so similarly, nor how to get from processing circuits to pictorial images spread across inner space. Some theorists turn from these circuits to their electromagnetic fields to deal with such difficulties concerning the mind’s qualia, (...)
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  2. The Electromagnetic Field Theory of Consciousness.Susan Pockett - 2012 - Journal of Consciousness Studies 19 (11-12):191-223.
    The electromagnetic field theory of consciousness proposes that conscious experiences are identical with certain electromagnetic patterns generated by the brain. While the theory has always acknowledged that not all of the electromagnetic patterns generated by brain activity are conscious, until now it has not been able to specify what might distinguish conscious patterns from non-conscious patterns. Here a hypothesis is proposed about the 3D shape of electromagnetic fields that are conscious, as opposed to those that (...)
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  3.  73
    Stationary Electromagnetic Fields of a Slowly Rotating Magnetized Neutron Star in General Relativity.L. Rezzolla, B. J. Ahmedov & J. C. Miller - 2001 - Foundations of Physics 31 (7):1051-1065.
    Following the general formalism presented by Rezzolla, Ahmedov and Miller, (1) we here derive analytic solutions of the electromagnetic fields equations in the internal and external background spacetime of a slowly rotating highly conducting magnetized neutron star. The star is assumed to be isolated and in vacuum, with a dipolar magnetic field not aligned with the axis of rotation. Our results indicate that the electromagnetic fields of a slowly rotating neutron star are modified by general relativistic (...)
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  4.  46
    Electromagnetic-field theories of qualia: can they improve upon standard neuroscience?Mostyn W. Jones & Tam Hunt - 2023 - Frontiers in Psychology 14.
    How do brains create all our different colors, pains, and other conscious qualities? These various qualia are the most essential aspects of consciousness. Yet standard neuroscience (primarily based on synaptic information processing) has not found the synaptic-firing codes, sometimes described as the “spike code,” to account for how these qualia arise and how they unite to form complex perceptions, emotions, et cetera. Nor is it clear how to get from these abstract codes to the qualia we experience. But electromagnetic (...)
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  5.  14
    Static electromagnetic fields in general relativity.B. K. Datta - 1971 - In Charles Goethe Kuper & Asher Peres (eds.), Relativity and Gravitation. New York: Gordon and Breach Science Publishers. pp. 1--111.
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  6.  9
    Electromagnetic Fields, Energy, and Forces.Robert M. Fano, Lan Jen Chu & Richard B. Adler - 1968 - MIT Press.
  7.  52
    Difficulties with the electromagnetic field theory of consciousness.Susan Pockett - 2002 - Journal of Consciousness Studies 9 (4):51-56.
    The author's version of the electromagnetic field theory of consciousness is stated briefly and then three difficulties with the theory are discussed. The first is a purely technical problem: how to measure accurately enough the spatial properties of the fields which are proposed to be conscious and then how to generate these artificially, so that the theory can be tested. The second difficulty might also be merely technical, or it might be substantive and fatal to the theory. This (...)
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  8.  6
    Is electromagnetic field momentum due to the flow of field energy?Oliver Davis Johns - 2021 - Studies in History and Philosophy of Science Part A 88 (C):358-366.
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  9.  66
    How to move an electromagnetic field?László E. Szabó & Márton Gömöri - unknown
    As a first principle, it is the basic assumption of the standard relativistic formulation of classical electrodynamics (ED) that the physical laws describing the electromagnetic phenomena satisfy the relativity principle (RP). According to the standard view, this assumption is absolutely unproblematic, and its correctness is well confirmed, at least in a hypothetico-deductive sense, by means of the empirical confirmation of the consequences derived from it. In this paper, we will challenge this customary view as being somewhat simplistic. In the (...)
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  10.  14
    Baconian Bees in the Electromagnetic Fields: Experimenter-Theorists In Nineteenth-Century Electrodynamics.Olivier Darrigol - 1999 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 30 (3):307-345.
  11.  62
    To Consider the Electromagnetic Field as Fundamental, and the Metric Only as a Subsidiary Field.Friedrich W. Hehl & Yuri N. Obukhov - 2005 - Foundations of Physics 35 (12):2007-2025.
    In accordance with an old suggestion of Asher Peres (1962), we consider the electromagnetic field as fundamental and the metric as a subsidiary field. In following up this thought, we formulate Maxwell’s theory in a diffeomorphism invariant and metric-independent way. The electromagnetic field is then given in terms of the excitation $H = ({\cal H}, {\cal D})$ and the field strength F = (E,B). Additionally, a local and linear “spacetime relation” is assumed between H and F, namely H (...)
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  12.  96
    Building Blocks for the Development of a Self-Consistent Electromagnetic Field Theory of Consciousness.Joachim Keppler - 2021 - Frontiers in Human Neuroscience 15:723415.
    The goal of this work is to compile the basic components for the construction of an electromagnetic field theory of consciousness that meets the standards of a fundamental theory. An essential cornerstone of the conceptual framework is the vacuum state of quantum electrodynamics which, contrary to the classical notion of the vacuum, can be viewed as a vibrant ocean of energy, termed zero-point field (ZPF). Being the fundamental substrate mediating the electromagnetic force, the ubiquitous ZPF constitutes the ultimate (...)
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  13.  24
    Low energy pulsing electromagnetic fields modify biomedical processes.C. A. L. Bassett - 1987 - Bioessays 6 (1):36-42.
    Low‐energy, pulsed electromagnetic fields (PEMFs) have reversed therapeutically resistant pathologic processes in the musculo‐skeletal system. Their development as a non‐thermal therapeutic agent is based on 30 years of study of the electro‐biological properties of connective tissues. Specific energy characteristics in applied PEMFs produce selected biological effects by modifying synthetic and other behavioral patterns of target cells; some mechanisms of action are defined. The technology appears safe and effective in clinical treatment of un‐united fractures, avascular necrosis of bone, and (...)
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  14.  11
    Propagation Properties of Bound Electromagnetic Field: Classical and Quantum Viewpoints.A. L. Kholmetskii, O. V. Missevitch, T. Yarman & R. Smirnov-Rueda - 2020 - Foundations of Physics 50 (11):1686-1722.
    The present work is motivated by recent experiments aimed to measure the propagation velocity of bound electromagnetic field that reveal no retardation in the absence of EM radiation. We show how these findings can be incorporated into the mathematical structure of special relativity theory that allows us to reconsider some selected problems of classical and quantum electrodynamics. In particular, we come to the conclusion that the total four-momentum for a classical system “particles plus fields” ought to be a (...)
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  15. Exposure to electromagnetic field by using mobile telephones and its influence on the brain functions.B. Djindjic, S. Radic, D. Krstic, D. Sokolovic, T. Pavlovic, D. Petkovic & J. Radosavljevic - 2003 - Facta Universitatis, Series: Linguistics and Literature 3 (2):2-12.
     
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  16. Helicity and the Electromagnetic Field.M. W. Evans - 1997 - Apeiron 4 (2-3):49.
     
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  17.  54
    A new look at electromagnetic field theory.Mendel Sachs - 1980 - Foundations of Physics 10 (11-12):921-936.
    The most general expression of electromagnetic theory is examined in the light of (1) Faraday's interpretation of the field as a potentiality for the force of charged matter to act upon a test body, and (2) Einstein's view of the field equations as an example of a covariant expression of special relativity. Faraday's original interpretation, in which all physical variables must be expressible as nonsingular fields, implies a particular generalization of the standard forms of the conservation equations and (...)
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  18. The conscious electromagnetic field: The hard problem made easy?J. McFadden - 2002 - Journal of Consciousness Studies.
  19.  13
    Maxwell on the Electromagnetic Field: A Guided Study. Thomas K. Simpson.L. Pearce Williams - 1997 - Isis 88 (4):715-716.
  20.  15
    Representing the Electromagnetic Field: How Maxwell’s Mathematics Empowered Faraday’s Field Theory.Ryan D. Tweney - 2011 - Science & Education 20 (7-8):687-700.
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  21. Synchronous firing and its influence on the brain's electromagnetic field: Evidence for an electromagnetic field theory of consciousness.J. McFadden - 2002 - Journal of Consciousness Studies 9 (4):23-50.
    The human brain consists of approximately 100 billion electrically active neurones that generate an endogenous electromagnetic field, whose role in neuronal computing has not been fully examined. The source, magnitude and likely influence of the brain's endogenous em field are here considered. An estimate of the strength and magnitude of the brain's em field is gained from theoretical considerations, brain scanning and microelectrode data. An estimate of the likely influence of the brain's em field is gained from theoretical principles (...)
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  22.  51
    The Vacuum Electromagnetic Fields and the Schrödinger Equation.A. J. Faria, H. M. França, G. G. Gomes & R. C. Sponchiado - 2007 - Foundations of Physics 37 (8):1296-1305.
    We consider the simple case of a nonrelativistic charged harmonic oscillator in one dimension, to investigate how to take into account the radiation reaction and vacuum fluctuation forces within the Schrödinger equation. The effects of both zero-point and thermal classical electromagnetic vacuum fields, characteristic of stochastic electrodynamics, are separately considered. Our study confirms that the zero-point electromagnetic fluctuations are dynamically related to the momentum operator p=−i ℏ ∂/∂ x used in the Schrödinger equation.
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  23.  29
    Baconian bees in the electromagnetic fields: Experimenter-theorists in nineteenth-century electrodynamics.Olivier Darrigol - 1999 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 30 (3):307-345.
  24.  73
    ‘…But I still can׳t get rid of a sense of artificiality’: The Reichenbach–Einstein debate on the geometrization of the electromagnetic field.Marco Giovanelli - 2016 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 54:35-51.
    This paper analyzes correspondence between Reichenbach and Einstein from the spring of 1926, concerning what it means to ‘geometrize’ a physical field. The content of a typewritten note that Reichenbach sent to Einstein on that occasion is reconstructed, showing that it was an early version of §49 of the untranslated Appendix to his Philosophie der Raum-Zeit-Lehre, on which Reichenbach was working at the time. This paper claims that the toy-geometrization of the electromagnetic field that Reichenbach presented in his note (...)
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  25.  11
    Symptom Presentation in Idiopathic Environmental Intolerance With Attribution to Electromagnetic Fields: Evidence for a Nocebo Effect Based on Data Re-Analyzed From Two Previous Provocation Studies.Stacy Eltiti, Denise Wallace, Riccardo Russo & Elaine Fox - 2018 - Frontiers in Psychology 9:306883.
    Individuals with idiopathic environmental illness with attribution to electromagnetic fields (IEI-EMF) claim they experience adverse symptoms when exposed to electromagnetic fields (EMFs) from mobile telecommunication devices. However, research has consistently reported no relationship between exposure to EMFs and symptoms in IEI-EMF individuals. The current study investigated whether presence of symptoms in IEI-EMF individuals were associated with a nocebo effect. Data from two previous double-blind provocation studies were re-analyzed based on participants’ judgments as to whether or not (...)
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  26.  15
    Local Description of the Aharonov–Bohm Effect with a Quantum Electromagnetic Field.Pablo L. Saldanha - 2021 - Foundations of Physics 51 (1):1-11.
    In the seminal works from Santos and Gozalo and Marletto and Vedral, it is shown how the Aharonov–Bohm effect can be described as the result of an exchange of virtual photons between the solenoid and the quantum charged particle along its propagation through the interferometer, where both the particle and the solenoid interact locally with the quantum electromagnetic field. This interaction results in a local and gauge-independent phase generation for the particle propagation in each path of the interferometer. Here (...)
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  27.  21
    Fields or firings? Comparing the spike code and the electromagnetic field hypothesis.Tam Hunt & Mostyn W. Jones - 2023 - Frontiers in Psychology 14 (1029715.):1-14.
    Where is consciousness? Neurobiological theories of consciousness look primarily to synaptic firing and “spike codes” as the physical substrate of consciousness, although the specific mechanisms of consciousness remain unknown. Synaptic firing results from electrochemical processes in neuron axons and dendrites. All neurons also produce electromagnetic (EM) fields due to various mechanisms, including the electric potential created by transmembrane ion flows, known as “local field potentials,” but there are also more meso-scale and macro-scale EM fields present in the (...)
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  28.  10
    The Slowest Shared Resonance: A Review of Electromagnetic Field Oscillations Between Central and Peripheral Nervous Systems. [REVIEW]Asa Young, Tam Hunt & Marissa Ericson - 2022 - Frontiers in Human Neuroscience 15.
    Electromagnetic field oscillations produced by the brain are increasingly being viewed as causal drivers of consciousness. Recent research has highlighted the importance of the body’s various endogenous rhythms in organizing these brain-generated fields through various types of entrainment. We expand this approach by examining evidence of extracerebral shared oscillations between the brain and other parts of the body, in both humans and animals. We then examine the degree to which these data support one of General Resonance Theory’s principles: (...)
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  29.  35
    Successive Lorentz transformations of the electromagnetic field.Abraham A. Ungar - 1991 - Foundations of Physics 21 (5):569-589.
    A velocity-orientation formalism to deal with compositions of successive Lorentz transformations, emphasizing analogies shared by Lorentz and Galilean transformations, has recently been developed. The emphasis in the present article is on the convenience of using the velocity-orientation formalism by resolving a paradox in the study of successive Lorentz transformations of the electromagnetic field that was recently raised by Mocanu. The paradox encountered by Mocanu results from the omission of the Thomas rotation (or, precession) which is involved in the composition (...)
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  30.  8
    Maxwell on the Electromagnetic Field: A Guided Study by Thomas K. Simpson. [REVIEW]L. Williams - 1997 - Isis 88:715-716.
  31.  32
    Particle-like configurations of the electromagnetic field: An extension of de Broglie's ideas.A. O. Barut & A. J. Bracken - 1992 - Foundations of Physics 22 (10):1267-1285.
    Localised configurations of the free electromagnetic field are constructed, possessing properties of massive, spinning, relativistic particles. In an inertial frame, each configuration travels in a straight line at constant speed, less than the speed of lightc, while slowly spreading. It eventually decays into pulses of radiation travelling at speedc. Each configuration has a definite rest mass and internal angular momentum, or spin. Each can be of “electric” or “magnetic” type, according as the radial component of the magnetic or electric (...)
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  32.  59
    On the Persistence of the Electromagnetic Field.Márton Gömöri & László E. Szabó - 2019 - Journal for General Philosophy of Science / Zeitschrift für Allgemeine Wissenschaftstheorie 50 (1):43-61.
    According to the standard realistic interpretation of classical electrodynamics, the electromagnetic field is conceived as a real physical entity existing in space and time. The problem we address in this paper is how to understand this spatiotemporal existence, that is, how to describe the persistence of a field-like physical entity like electromagnetic field. First, we provide a formal description of the notion of persistence: we derive an “equation of persistence” constituting a necessary condition that the spatiotemporal distributions of (...)
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  33. Initiation of intentional actions and the electromagnetic field theory of consciousness.Susan Pockett - 2011 - Humana Mente 4 (15):159-175.
     
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  34.  32
    A Hilbert space for the classical electromagnetic field.Bernard Jancewicz - 1993 - Foundations of Physics 23 (11):1405-1421.
    The synthetic Maxwell equation, uniting all Maxwell equations within the framework of a Clifford algebra, can be treated as a first-order wave equation. A Hilbert space of its solutions describing classical free electromagnetic fields is introduced. This Hilbert space can be called “classical,” which means that the Planck constant is absent. The scalar square of an element of this space is the total energy of the field. The time independence of the scalar product is demonstrated. The time and (...)
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  35.  18
    A Model of Topological Quantization of the Electromagnetic Field.Antonio F. Rañada - 1995 - In M. Ferrero & A. van der Merwe (eds.), Fundamental Problems in Quantum Physics. pp. 267--277.
  36.  77
    Topology and the physical properties of the electromagnetic field.Terence W. Barrett - 2000 - Apeiron 7:3-11.
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  37.  53
    A spinor equation of the pure electromagnetic field.Granville A. Perkins - 1978 - Foundations of Physics 8 (9-10):745-757.
    In the early history of spinors it became evident that a single undotted covariant elementary spinor can represent a plane wave of light. Further study of that relation shows that plane electromagnetic waves satisfy the Weyl equation, in a way that indicates the correct spin angular momentum. On the subatomic scale the Weyl equation discloses more detail than the vector equations. The spinor and vector equations are equivalent when applied to plane waves, and more generally (in the absence of (...)
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  38.  18
    What's nu? A re-examination of Maxwell's ‘ratio-of-units’ argument, from the mechanical theory of the electromagnetic field to ‘On the elementary relations between electrical measurements’.Daniel Jon Mitchell - 2017 - Studies in History and Philosophy of Science Part A 65:87-98.
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  39.  17
    Clerk Maxwell's corrections to the page proofs of “A Dynamical Theory of the Electromagnetic Field”.Paul F. Cranefield - 1954 - Annals of Science 10 (4):359-362.
  40.  46
    The history of electromagnetic theory through the lives of its founders: Nancy Forbes and Basil Mahon: Faraday, Maxwell, and the electromagnetic field: How two men revolutionized physics. Amherst, NY: Prometheus Books, 2014, 320pp, US $25.95 HB.Naomi Pasachoff - 2015 - Metascience 24 (2):233-236.
    This engaging book presents the history of the development of the science of electromagnetism through the lives of two of its founders. The first seven chapters of this seventeen-chapter book belong to Michael Faraday, the story of whose rise to scientific prominence from an unprivileged background is eternally appealing. Chapters eight through fifteen belong to James Clerk Maxwell, a truly great scientist whose name should be better known than it is. The book’s penultimate chapter introduces the “Maxwellians”—the Britons Oliver Heaviside, (...)
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  41.  60
    A spinor equation of the pure electromagnetic field. II.Granville A. Perkins - 1984 - Foundations of Physics 14 (4):341-349.
    Spinor equations, previously found valid and interesting in dealing with plane waves of light, are applied to spherical waves. It is found that the spinors pertaining to light do not form outgoing spherical waves, as the vectors do, but they can form standing spherical waves, which the vectors usually cannot. The spinors disclose details (“hidden variables”) which are hidden from the accepted theories of the subatomic scale.
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  42.  10
    James Clerk Maxwell and the Theory of the Electromagnetic Field. John Hendry.Bruce J. Hunt - 1988 - Isis 79 (4):735-736.
  43. As time went by, of course, this mechanical ether came to seem less and less necessary, or plausible, and the electromagnetic field emerged as a new, non-mechanical, concept; its vibrations were supposed not to require the existence of any underlying mechanical contraption. Gravity was also naturally regarded as a field theory. A. [REVIEW]Ijr Aitchison - 1991 - In Simon Saunders & Harvey R. Brown (eds.), The Philosophy of Vacuum. Oxford University Press. pp. 159.
  44.  44
    James Clerk Maxwell and the Theory of the Electromagnetic Field. John Hendry. [REVIEW]Margaret Morrison - 1991 - Philosophy of Science 58 (3):505-507.
  45.  7
    The electromagnetic brain: EM field theories on the nature of consciousness.Shelli Renée Joye - 2020 - Rochester, Vermont: Inner Traditions.
    An exploration of cutting-edge theories on the electromagnetic basis of consciousness Details, in nontechnical terms, 10 credible theories, each published by prominent professionals with extensive scientific credentials, that describe how electromagnetic fields may be the basis for consciousness Examines practical applications of electromagnetic-consciousness theory, including the use of contemporary brain stimulation devices to modify and enhance consciousness Explores the work of William Köhler, Susan Pockett, Johnjoe McFadden, Rupert Sheldrake, Ervin Laszlo, William Tiller, Harold Saxton Burr, Sir (...)
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  46.  27
    John Hendry. James Clerk Maxwell and the Theory of the Electromagnetic Field. Bristol and Boston: Adam Hilger, 1986. Pp. xix + 305. ISBN 0-85274-563-X. £30.00. [REVIEW]Paul Theerman - 1987 - British Journal for the History of Science 20 (3):365-366.
  47. The conscious electromagnetic information field theory: The hard problem made easy?J. McFadden - 2002 - Journal of Consciousness Studies 9 (8):45-60.
    In the April 2002 edition of JCS I outlined the conscious electromagnetic information field theory, claiming that consciousness is that component of the brain's electromagnetic field that is downloaded to motor neurons and is thereby capable of communicating its informational content to the outside world. In this paper I demonstrate that the theory is robust to criticisms. I further explore implications of the theory particularly as regards the relationship between electromagnetic fields, information, the phenomenology of consciousness (...)
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  48.  28
    Nancy Forbes;, Basil Mahon. Faraday, Maxwell, and the Electromagnetic Field: How Two Men Revolutionized Physics. 320 pp., illus., bibl., index. Amherst, N.Y.: Prometheus Books, 2014. $25.95. [REVIEW]Frank A. J. L. James - 2015 - Isis 106 (2):462-463.
  49.  45
    Extended Electromagnetic Theory, Angular Momentum and the B (3) Field.Bo Lehnert & Sisir Roy - 1997 - Apeiron 4 (2-3):59.
  50.  39
    Non-Minimal Electromagnetic Coupling for Spin-3/2 Fields.V. M. Villanueva, J. A. Nieto & O. Obregón - 2003 - Foundations of Physics 33 (5):735-740.
    The problem of the electromagnetic coupling for spin-3/2 particles is discussed. Following supergravity and some previous researches in the field of classical supersymmetric particles, we found that the electromagnetic coupling must not obey a minimal coupling in the sense of coupling the electromagnetic potential, but some kind of an electromagnetic field strength.
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