Results for 'mass and charge density'

979 found
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  1. Meaning of the wave function.Shan Gao - 2010
    We investigate the meaning of the wave function by analyzing the mass and charge density distributions of a quantum system. According to protective measurement, a charged quantum system has effective mass and charge density distributing in space, proportional to the square of the absolute value of its wave function. In a realistic interpretation, the wave function of a quantum system can be taken as a description of either a physical field or the ergodic motion (...)
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  2. Protective measurement and the de Broglie-Bohm theory.Shan Gao - manuscript
    We investigate the implications of protective measurement for de Broglie-Bohm theory, mainly focusing on the interpretation of the wave function. It has been argued that the de Broglie-Bohm theory gives the same predictions as quantum mechanics by means of quantum equilibrium hypothesis. However, this equivalence is based on the premise that the wave function, regarded as a Ψ-field, has no mass and charge density distributions. But this premise turns out to be wrong according to protective measurement; a (...)
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  3. Why the de Broglie-Bohm theory is probably wrong.Shan Gao - manuscript
    We investigate the validity of the field explanation of the wave function by analyzing the mass and charge density distributions of a quantum system. It is argued that a charged quantum system has effective mass and charge density distributing in space, proportional to the square of the absolute value of its wave function. This is also a consequence of protective measurement. If the wave function is a physical field, then the mass and (...) density will be distributed in space simultaneously for a charged quantum system, and thus there will exist a remarkable electrostatic self-interaction of its wave function, though the gravitational self-interaction is too weak to be detected presently. This not only violates the superposition principle of quantum mechanics but also contradicts experimental observations. Thus we conclude that the wave function cannot be a description of a physical field. In the second part of this paper, we further analyze the implications of these results for the main realistic interpretations of quantum mechanics, especially for de Broglie-Bohm theory. It has been argued that de Broglie-Bohm theory gives the same predictions as quantum mechanics by means of quantum equilibrium hypothesis. However, this equivalence is based on the premise that the wave function, regarded as a Ψ-field, has no mass and charge density distributions, which turns out to be wrong according to the above results. For a charged quantum system, both Ψ-field and Bohmian particle have charge density distribution. This then results in the existence of an electrostatic self-interaction of the field and an electromagnetic interaction between the field and Bohmian particle, which contradicts both the predictions of quantum mechanics and experimental observations. Therefore, de Broglie-Bohm theory as a realistic interpretation of quantum mechanics is probably wrong. Lastly, we suggest that the wave function is a description of some sort of ergodic motion (e.g. random discontinuous motion) of particles, and we also briefly analyze the implications of this suggestion for other realistic interpretations of quantum mechanics including many-worlds interpretation and dynamical collapse theories. (shrink)
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  4.  38
    The Etherino and/or the Neutrino Hypothesis.Ruggero Maria Santilli - 2007 - Foundations of Physics 37 (4-5):670-711.
    By using a language as accessible to as broad an audience as possible, in this paper we identify serious insufficiencies of the neutrino and quark hypotheses for the synthesis of the neutrons from protons and electrons inside stars according to the familiar reaction ${{\rm p}^+ + \bar {\nu} + {\rm e}^-\rightarrow {\rm n}}$ . We introduce, apparently for the first time, the hypothesis that the energy and spin needed for the synthesis of the neutron originate either from the environment or (...)
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  5.  48
    On the reality and meaning of the wave function.Shan Gao - unknown
    In this article, we give a clearer argument for the reality of the wave function in terms of protective measurements, which does not depend on nontrivial assumptions and also overcomes existing objections. Moreover, based on an analysis of the mass and charge properties of a quantum system, we propose a new ontological interpretation of the wave function. According to this interpretation, the wave function of an N-body system represents the state of motion of N particles. Moreover, the motion (...)
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  6.  33
    Why the De Broglie-Bohm Theory Goes Astray.Shan Gao - unknown
    We show that the de Broglie-Bohm theory is inconsistent with the established parts of quantum mechanics concerning its physical content. According to the de Broglie-Bohm theory, the mass and charge of an electron are localized in a position where its Bohmian particle is. However, protective measurement implies that they are not localized in one position but distributed throughout space, and the mass and charge density of the electron in each position is proportional to the modulus (...)
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  7.  32
    Problems of the De Broglie-Bohm Theory.Shan Gao - unknown
    It is shown that the de Broglie-Bohm theory has a potential problem concerning the mass and charge distributions of a quantum system such as an electron. According to the de Broglie-Bohm theory, the mass and charge of an electron are localized in a position where its Bohmian particle is. However, protective measurement indicates that they are not localized in one position but distributed throughout space, and the mass and charge density of the electron (...)
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  8. Many Worlds and Schrodinger's First Quantum Theory.Valia Allori, Sheldon Goldstein, Roderich Tumulka & Nino Zanghì - 2011 - British Journal for the Philosophy of Science 62 (1):1-27.
    Schrödinger’s first proposal for the interpretation of quantum mechanics was based on a postulate relating the wave function on configuration space to charge density in physical space. Schrödinger apparently later thought that his proposal was empirically wrong. We argue here that this is not the case, at least for a very similar proposal with charge density replaced by mass density. We argue that when analyzed carefully, this theory is seen to be an empirically adequate (...)
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  9.  43
    Electron Charge Density: A Clue from Quantum Chemistry for Quantum Foundations.Charles T. Sebens - 2021 - Foundations of Physics 51 (4):1-39.
    Within quantum chemistry, the electron clouds that surround nuclei in atoms and molecules are sometimes treated as clouds of probability and sometimes as clouds of charge. These two roles, tracing back to Schrödinger and Born, are in tension with one another but are not incompatible. Schrödinger’s idea that the nucleus of an atom is surrounded by a spread-out electron charge density is supported by a variety of evidence from quantum chemistry, including two methods that are used to (...)
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  10.  19
    Contribution of Pressure to the Energy–Momentum Density in a Moving Perfect Fluid: A Physical Perspective.Ashok K. Singal - 2021 - Foundations of Physics 51 (1):1-20.
    In the energy–momentum density expressions for a relativistic perfect fluid with a bulk motion, one comes across a couple of pressure-dependent terms, which though well known, are to an extent, lacking in their conceptual basis and the ensuing physical interpretation. In the expression for the energy density, the rest mass density along with the kinetic energy density of the fluid constituents due to their random motion, which contributes to the pressure as well, are already included. (...)
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  11.  69
    The method of physical coincidences and the scale coordinate.Wm Bender - 1934 - Philosophy of Science 1 (3):253-272.
    The history of Physical Science appears to exhibit, periodically, a race between the acmulation of data and the ability of its codification to find a natural place for much of the empirical findings. If the codifying scheme is a mathematical theory, capable of interpolation and extrapolation, according to the rules of the particular branch of mathematics employed, the ablest handlers of the theory are frequently confronted with a situation in which mathematical computation alone does not suffice. In such a situation (...)
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  12.  88
    Relativistic mechanics and electrodynamics without one-way velocity assumptions.Carlo Giannoni - 1978 - Philosophy of Science 45 (1):17-46.
    The Conventionality of Simultaneity espoused by Reichenbach, Grunbaum, Edwards, and Winnie is herein extended to mechanics and electrodynamics. The extension is seen to be a special case of a generally covariant formulation of physics, and therefore consistent with Special Relativity as the geometry of flat space-time. Many of the quantities of classical physics, such as mass, charge density, and force, are found to be synchronization dependent in this formulation and, therefore, in Reichenbach's terminology, "metrogenic." The relationship of (...)
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  13.  74
    Unconventional Approach to Orbital-Free Density Functional Theory Derived from a Model of Extended Electrons.Werner A. Hofer - 2011 - Foundations of Physics 41 (4):754-791.
    An equation proposed by Levy, Perdew and Sahni (Phys. Rev. A 30:2745, 1984) is an orbital-free formulation of density functional theory. However, this equation describes a bosonic system. Here, we analyze on a very fundamental level, how this equation could be extended to yield a formulation for a general fermionic distribution of charge and spin. This analysis starts at the level of single electrons and with the question, how spin actually comes into a charge distribution in a (...)
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  14.  56
    A New Ontological Interpretation of the Wave Function.Shan Gao - unknown
    In this paper, we propose an ontological interpretation of the wave function in terms of random discontinuous motion of particles. According to this interpretation, the wave function of an N-body quantum system describes the state of random discontinuous motion of N particles, and in particular, the modulus squared of the wave function gives the probability density that the particles appear in every possible group of positions in space. We present three arguments supporting this new interpretation of the wave function. (...)
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  15.  25
    Fat-Free Mass and Bone Mineral Density of Young Soccer Players: Proposal of Equations Based on Anthropometric Variables.Rossana Gomez-Campos, Thiago Santi-Maria, Miguel Arruda, Thiago Maldonado, Altamiro Albernaz, Marco Schiavo & Marco Cossio-Bolaños - 2019 - Frontiers in Psychology 10.
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  16.  17
    Newtons Determination of the Masses and Densities of the Sun, Jupiter, Saturn, and the Earth.I. Bernard Cohen - 1998 - Archive for History of Exact Sciences 53 (1):83-95.
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  17.  56
    Elementary particles in bimetric general relativity.Nathan Rosen - 1989 - Foundations of Physics 19 (3):339-348.
    A classical model of an elementary particle is considered in the framework of the bimetric general relativity theory. The particle is regarded as a spherically symmetric object filling its Schwarzschild sphere and made of matter having mass density, pressure, and charge density. The mass is taken to be the Planck mass, and possible values of the charge are taken as zero, ±1/3e, ±2/3e, and ±e, with e the electron charge.
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  18.  13
    Charge and spin density distributions in the ferromagnetic alloy Fe2B.P. J. Brown & J. L. Cox - 1971 - Philosophical Magazine 23 (183):705-725.
  19.  69
    Electrogravitational induction and rotation.James F. Woodward - 1982 - Foundations of Physics 12 (5):467-478.
    The Faradayan hypothesis of inductive coupling of the electromagnetic and gravitational fields is briefly discussed. An experiment designed to test the hypothesis wherein samples are spun to see if any electrogravitational charge is induced is described. Results of the experiment are reported. They imply the induction of a charge density ρ* for spinning samples that behaves as ρ*=βρma, where ρm is the mass density of an element of matter experiencing an acceleration a, and β is (...)
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  20.  56
    A theoretical determination of the electronic rest mass.J. P. Kobus - 1975 - Foundations of Physics 5 (2):343-347.
    A theoretical relationship for the electron rest mass is derived in terms of the electron charge, Planck's quantum of action, and the speed of light. The basis for this derivation is an assumption that the electron rest mass is entirely electrostatic in origin, combined with the realization that the maximum action density of the world is simply the speed of light. Planck's quantum of action becomes perspicuously associated with an elliptical microspace.
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  21.  34
    Parity and time inversion symmetries of electromagnetic systems.R. M. Kiehn - 1977 - Foundations of Physics 7 (5-6):301-311.
    By forming the intersections of the parity and time reversal equivalence classes of physical entities that are represented by differential forms and differential form densities, a number of subsets of discrete symmetry classes for electromagnetic systems can be generated. Only one of these subsets is consistent with elementary thermodynamic arguments for dissipative systems and at the same time yields the notion that both charge and mass are spacetime scalars. This subset is not in correspondence with the two self-consistent (...)
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  22.  24
    Mass and elite politics in Mill's considerations on representative Government.Chris Barker - 2015 - History of European Ideas 41 (8):1143-1163.
    SUMMARYThis paper examines the formal filters of the public's political will defended by JS Mill as consistent with the best form of representative government. Holding that institutions must adjust to democratic society, and that democratic society must be improved to achieve wise rule, Mill rejects secret ballots and electoral pledges, and advocates a constitutional council and graduated enfranchisement. He also recommends but does not require the indirect election of the President and a unicameral legislature. Mill's historically sensitive approach puts pressure (...)
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  23.  74
    Is an Electron a Charge Cloud? A Reexamination of Schrödinger’s Charge Density Hypothesis.Shan Gao - 2018 - Foundations of Science 23 (1):145-157.
    This article re-examines Schrödinger’s charge density hypothesis, according to which the charge of an electron is distributed in the whole space, and the charge density in each position is proportional to the modulus squared of the wave function of the electron there. It is shown that the charge distribution of a quantum system can be measured by protective measurements as expectation values of certain observables, and the results as predicted by quantum mechanics confirm Schrödinger’s (...)
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  24.  21
    Diffuse electron scattering and vacancy ordering in VO Possible role of charge density waves.C. N. R. Rao, P. L. Gai & S. Ramasesha - 1976 - Philosophical Magazine 33 (2):387-392.
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  25.  45
    Non-accessible mass and the ontology of GRW.Cristian Mariani - 2022 - Studies in History and Philosophy of Science Part A 91 (C):270-279.
    The Mass Density approach to GRW (GRWm for short) has been widely discussed in the quantum foundations literature. A crucial feature of GRWm is the introduction of a Criterion of Accessibility for mass, which allows to explain the determinacy of experimental outcomes thus also addressing the tails problem of GRW. However, the Criterion of Accessibility leaves the ontological meaning of the non-accessible portion of mass utterly unexplained. In this paper I discuss two viable approaches to non-accessible (...)
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  26. Some Consequences of Zero Point Energy.Bo Lehnert - 2014 - JEMAA 6:319-327.
    Both theory and experiments indicate that the vacuum is not a state of empty space, but is populated by electromagnetic fluctuations at a lowest nonzero level, the Zero Point Energy (ZPE). This debouches into considerable changes of fundamental physics, as shown by a revised quantum electrodynamic theory (RQED) applied to elementary particles, and by a revised ZPE frequency spectrum applied to the expanding universe. The Standard Model based on a vacuum state of empty space is thus replaced by RQED, thereby (...)
     
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  27.  46
    Unified fields of analytic space-time-energy.André Gleyzal - 1976 - Foundations of Physics 6 (3):299-303.
    An “analytic gravitational field”Z αβ(Z y ) is shown to include electromagnetic phenomena. In an almost flat and almost static complex geometryds 2 =zαβdzαdzβ of four complex variables zγ=t, x, y, x the field equationsR αβ $\frac{1}{2}$ Rz αβ= −κ(σU α U β − υZ αβ) imply the conventional equations of motion and the conventional electromagnetic field equations to first order if σ=σ(Z v) and ν=ν(z γ) are expressed in terms of the conventional mass density function $\hat \sigma (...)
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  28.  34
    Classical elementary particles in general relativity.Mark Israelit & Nathan Rosen - 1991 - Foundations of Physics 21 (10):1237-1247.
    Elementary particles, regarded as the constituents of quarks and leptons, are described classically in the framework of the general relativity theory. There are neutral particles and particles having charges±1/3e. They are taken to be spherically symmetric and to have mass density, pressure, and (if charged) charge density. They are characterized by an equation of state P=−ρ suggested by earlier work on cosmology. The neutral particle has a very simple structure. In the case of the charged particle (...)
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  29.  25
    Solution of the Poisson equation for infinite and semi-infinite systems including near field corrections for charge densities of arbitrary shape.R. Hammerling, J. Zabloudil, L. Szunyogh & P. Weinberger - 2006 - Philosophical Magazine 86 (1):25-48.
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  30.  86
    The Equivalence Principle Revisited.Fritz Rohrlich - 2000 - Foundations of Physics 30 (5):621-630.
    The validity of the equivalence principle is examined. Since classical physics is not valid for point particles, and a mass density over a finite volume tends to collapse, stabilizing forces are necessary. These cause a deviation from geodesic motion. That deviation is discussed in the light of recent results which provide approximate expressions for the self-force of a finite size particle due to both its mass and its charge. The equivalence principle appears to be violated.
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  31.  16
    Elementary Charge and Neutrino’s Mass from Planck Length.Saulo Carneiro - 2020 - Foundations of Physics 50 (11):1376-1381.
    It is shown that the postulation of a minimum length for the horizons of a black hole leads to lower bounds for the electric charges and magnetic moments of elementary particles. If the minimum length has the order of the Planck scale, these bounds are given, respectively, by the electronic charge and by \. The latter implies that the masses of fundamental particles are bounded above by the Planck mass, and that the smallest non-zero neutrino mass is (...)
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  32.  67
    Spin-1/2 Maxwell Fields.Rollin S. Armour - 2004 - Foundations of Physics 34 (5):815-842.
    Requiring covariance of Maxwell's equations without a priori imposing charge invariance allows for both spin-1 and spin-1/2 transformations of the complete Maxwell field and current. The spin-1/2 case yields new transformation rules, with new invariants, for all traditional Maxwell field and source quantities. The accompanying spin-1/2 representations of the Lorentz group employ the Minkowski metric, and consequently the primary spin-1/2 Maxwell invariants are also spin-1 invariants; for example, Φ2−A2, E2−B2+2iE⋅B−2. The associated Maxwell Lagrangian density is also the same (...)
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  33.  75
    Collapse theories as beable theories.Guido Bacciagaluppi - 2010 - Manuscrito 33 (1):19-54.
    I discuss the interpretation of spontaneous collapse theories, with particular reference to Bell's suggestion that the stochastic jumps in the evolution of the wave function should be considered as local beables of the theory. I develop this analogy in some detail for the case of non-relativistic GRW-type theories, using a generalisation of Bell's notion of beables to POV measures. In the context of CSL-type theories, this strategy appears to fail, and I discuss instead Ghirardi and co-workers' mass-density interpretation (...)
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  34.  8
    Mass, Charge, Gravity and Rays: Distinguishing Between the Two Kinds of Universal Physics.Bernard Dugué - 2017 - In Information and the World Stage. Hoboken, NJ, USA: Wiley. pp. 69–84.
    In physics, mass is a property of matter that describes how material elements are arranged in space and opposed to forces, and also how they generate forces such as gravitation forces. Electric charge remains enigmatic. This charge is a universal constant, and it is discrete rather than continuous. Spin can be interpreted as a reversal movement that allows the outer side of matter to fold back on itself. Finally, Maxwell's theory on the propagation of light also belongs (...)
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  35.  44
    The ChargeMass–Spin Relation of Clifford Polyparticles, Kerr–Newman Black Holes and the Fine Structure Constant.Carlos Castro - 2004 - Foundations of Physics 34 (7):1091-1113.
    A Clifford-algebraic interpretation is proposed of the charge, mass, spin relationship found recently by Cooperstock and Faraoini, which was based on the Kerr–Newman metric solutions of the Einstein–Maxwell equations. The components of the polymomentum associated with a Clifford polyparticle in four dimensions provide for such a charge, mass, spin relationship without the problems encountered in Kaluza–Klein compactifications which furnish an unphysically large value for the electron charge. A physical reasoning behind such charge, mass, (...)
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  36.  69
    Charge, Geometry, and Effective Mass.Gerald E. Marsh - 2008 - Foundations of Physics 38 (3):293-300.
    Charge, like mass in Newtonian mechanics, is an irreducible element of electromagnetic theory that must be introduced ab initio. Its origin is not properly a part of the theory. Fields are then defined in terms of forces on either masses—in the case of Newtonian mechanics, or charges in the case of electromagnetism. General Relativity changed our way of thinking about the gravitational field by replacing the concept of a force field with the curvature of space-time. Mass, however, (...)
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  37.  69
    Charge, Geometry, and Effective Mass in the Kerr-Newman Solution to the Einstein Field Equations.Gerald E. Marsh - 2008 - Foundations of Physics 38 (10):959-968.
    It has been shown that for the Reissner-Nordström solution to the vacuum Einstein field equations charge, like mass, has a unique space-time signature (Marsh, Found. Phys. 38:293–300, 2008). The presence of charge results in a negative curvature. This work, which includes a discussion of effective mass, is extended here to the Kerr-Newman solution.
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  38. Could Charge and Mass be Universals?Marian J. R. Gilton - 2020 - Philosophy and Phenomenological Research 102 (3):624-644.
    Philosophy and Phenomenological Research, EarlyView.
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  39.  20
    Mass problems and density.Stephen Binns, Richard A. Shore & Stephen G. Simpson - 2016 - Journal of Mathematical Logic 16 (2):1650006.
    Recall that [Formula: see text] is the lattice of Muchnik degrees of nonempty effectively compact sets in Euclidean space. We solve a long-standing open problem by proving that [Formula: see text] is dense, i.e. satisfies [Formula: see text]. Our proof combines an oracle construction with hyperarithmetical theory.
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  40.  25
    Accessing a Big Bounce Universe with Concealed Mass and Gravitation.Guido J. M. Verstraeten & Willem W. Verstraeten - 2022 - Философия И Космология 28:32-41.
    According to Whitehead, nature is disclosed to mind by an ensemble of events characterized by unobservable hidden intrinsic factors (e.g., mass, gravitation) and observable extrinsic factors (e.g., motion, density). Mass is not the substratum of dynamics. It implies spatial extension and temporal duration, which are both necessary conditions of observable natural phenomena. Therefore, an instant, deprived of duration, is immeasurable. Whitehead’s claims on mass, space, and time corroborate Verlinde’s alternative conception of quantum gravitation. Within the de (...)
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  41. Mass Time, Mass System, Electrical Charge Time (Infinities in Physics).Farzad Didehvar - manuscript
    Here, we continue the discussion in [1], about infinities in Physics. Our goal is to create a Mathematical system to give a probable explanation for infinities in QED, based on Fuzzy time. This Mathematical system should be sufficiently satisfactory and Simple. In general, our goal of these series, is to provide more reasons to consider time as a fuzzy concept in a way that is explained in [4], [5], [6].
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  42.  57
    High-Density Lipoproteins-Associated Proteins and Subspecies Related to Arterial Stiffness in Young Adults with Type 2 Diabetes Mellitus.Xiaoting Zhu, Amy S. Shah, Debi K. Swertfeger, Hailong Li, Sheng Ren, John T. Melchior, Scott M. Gordon, W. Sean Davidson & L. Jason Lu - 2018 - Complexity 2018:1-14.
    Lower plasma levels of high-density lipoproteins in adolescents with type 2 diabetes have been associated with a higher pulse wave velocity, a marker of arterial stiffness. Evidence suggests that HDL proteins or particle subspecies are altered in T2D and these may drive these relationships. In this work, we set out to reveal any specific proteins and subspecies that are related to arterial stiffness in youth with T2D from proteomics data. Plasma and PWV measurements were previously acquired from lean and (...)
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  43.  80
    Gravitational field of electrically charged mass in the Lobachevski space.R. A. Asanov - 1995 - Foundations of Physics 25 (6):951-957.
    A variant of the Rosen bimetric general relativity with the Lobachevski background space metric is considered. An exact static external solution for the gravitational field of a concentrated electrically charged mass is found when the space is spherically symmetric. When the Lobachevski constant k → ∞, the solution turns into the Nordström-Reissner solution in general relativity, expressed via the harmonic coordinates. The results are also valid for the Chernikov theory with two connections and one metric.
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  44.  54
    Quantum mechanics of relativistic spinless particles.John R. Fanchi & R. Eugene Collins - 1978 - Foundations of Physics 8 (11-12):851-877.
    A relativistic one-particle, quantum theory for spin-zero particles is constructed uponL 2(x, ct), resulting in a positive definite spacetime probability density. A generalized Schrödinger equation having a Hermitian HamiltonianH onL 2(x, ct) for an arbitrary four-vector potential is derived. In this formalism the rest mass is an observable and a scalar particle is described by a wave packet that is a superposition of mass states. The requirements of macroscopic causality are shown to be satisfied by the most (...)
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  45. Mass‐energy‐momentum: Only there because of spacetime.Dennis Lehmkuhl - 2011 - British Journal for the Philosophy of Science 62 (3):453-488.
    I describe how relativistic field theory generalizes the paradigm property of material systems, the possession of mass, to the requirement that they have a mass–energy–momentum density tensor T µ associated with them. I argue that T µ does not represent an intrinsic property of matter. For it will become evident that the definition of T µ depends on the metric field g µ in a variety of ways. Accordingly, since g µ represents the geometry of spacetime itself, (...)
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  46.  18
    Equivalence Between Self-energy and Self-mass in Classical Electron Model.M. Kh Khokonov & J. U. Andersen - 2019 - Foundations of Physics 49 (7):750-782.
    A cornerstone of physics, Maxwell‘s theory of electromagnetism, apparently contains a fatal flaw. The standard expressions for the electromagnetic field energy and the self-mass of an electron of finite extension do not obey Einstein‘s famous equation, \, but instead fulfill this relation with a factor 4/3 on the left-hand side. Furthermore, the energy and momentum of the electromagnetic field associated with the charge fail to transform as a four-vector. Many famous physicists have contributed to the debate of this (...)
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  47. Force of Consciousness in Mass Charge Interactions.Wolfgang Baer - 2014 - Cosmos and History 10 (1):170-182.
    Primitive awareness leading to consciousness can be explained as a manifestation of internal forces between charge and mass. These internal forces, related to the weak and strong forces, balance the external forces of gravity-inertia and electricity-magnetism and thereby accommodate outside influences by adjusting the internal structure of material from which we are composed. Such accommodation is the physical implementation of a model of the external physical world and qualifies as Vitiello's double held inside ourselves. We experience this accommodation (...)
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  48.  97
    Discussion. Counting marbles with 'accessible' mass density: A reply to Bassi and Ghirardi.R. Clifton & B. Monton - 2000 - British Journal for the Philosophy of Science 51 (1):155-164.
  49.  71
    The Mass of the Gravitational Field.Charles T. Sebens - 2022 - British Journal for the Philosophy of Science 73 (1):211-248.
    By mass-energy equivalence, the gravitational field has a relativistic mass density proportional to its energy density. I seek to better understand this mass of the gravitational field by asking whether it plays three traditional roles of mass: the role in conservation of mass, the inertial role, and the role as source for gravitation. The difficult case of general relativity is compared to the more straightforward cases of Newtonian gravity and electromagnetism by way of (...)
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  50.  32
    Reference-Class Problems Are Real: Health-Adjusted Reference Classes and Low Bone Mineral Density.Nicholas Binney - 2024 - Journal of Medicine and Philosophy 49 (2):jhae005.
    Elselijn Kingma argues that Christopher Boorse’s biostatistical theory (the BST) does not show how the reference classes it uses are objective and naturalistic. Recently, philosophers of medicine have attempted to rebut Kingma’s concerns. I argue that these rebuttals are theoretically unconvincing, and that there are clear examples of physicians adjusting their reference classes according to their prior knowledge of health and disease. I focus on the use of age-adjusted reference classes to diagnose low bone mineral density in children. In (...)
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