MURPHY, Alice. Thought Experiments and the Scientific Imagination. Phd
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Generalization of Lorentz-Poincare Ether Theory to Quantum Gravity
Abstract We present a quantum theory of gravity which is in agreement with observation in the relativistic domain. The theory is not rel- ativistic, but a Galilean invariant generalization of Lorentz-Poincare ether theory to quantum gravity. If we apply the methodological rule that the best available theory has to be preferred, we have to reject the relativistic paradigm and return to Galilean invariant ether theory. arXiv:gr-qc/9706055v1 18 Jun 1997 1 Generalization Of Lorentz-Poincare Ether Theory To Quantum Gravity Ilja Schmelzer∗ September 12, 2021 ... die bloße Berufung auf k¨unftig zu entdeckende Ableitungen bedeutet uns nichts. Karl Popper In quantum gravity, as we shall see, the space-time manifold ceases to exist as an objective physical reality; geometry becomes relational and contextual; and the foundational conceptual categories of prior science – among them, existence itself – become problematized and relativized. Alan Sokal Contents 1 The Problem Of Quantum Gravity 3 2 Introduction 4 3 Generalization Of Lorentz-Poincare Ether Theory To Gra- vity 6 3.1 Elementary Properties Of Post-Relativistic Gravity . 8 3.2 TheCosmologicalConstants . 9 3.2.1 The Observation Of The Cosmological Constants . 9 3.2.2 The Necessity Of Cosmological Constants . 10 3.3 TheGlobalUniverse ....................... 11 3.4 Gravitational Collapse . 12 ∗WIAS Berlin 2 3.5 A Post-Relativistic Lattice Theory . 13 3.6 BetterAtomicEtherTheories . 15 4 Canonical Quantization 16 5 Discussion 17 5.1 Conclusion............................. 18 1 The Problem Of Quantum Gravity We believe that there exists a unique physical theory which allows to describe the entire universe. That means, there exists a theory — quantum gravity — which allows to describe quantum effects as well as relativistic effects of strong gravitational fields. -
Interaction Energy of a Charged Medium and Its EM Field in a Curved Spacetime Mayeul Arminjon
Interaction Energy of a Charged Medium and its EM Field in a Curved Spacetime Mayeul Arminjon To cite this version: Mayeul Arminjon. Interaction Energy of a Charged Medium and its EM Field in a Curved Spacetime. Proceedings of the Twentieth International Conference on Geometry, Integrability and Quantization, Ivaïlo M. Mladenov, Jun 2018, Varna, Bulgaria. pp.88-98. hal-01881100 HAL Id: hal-01881100 https://hal.archives-ouvertes.fr/hal-01881100 Submitted on 25 Sep 2018 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Interaction Energy of a Charged Medium and its EM Field in a Curved Spacetime Mayeul Arminjon Univ. Grenoble Alpes, CNRS, Grenoble INP, 3SR lab., F-38000 Grenoble, France Abstract In the electrodynamics of special relativity (SR) or general relativ- ity (GR), the energy tensors of the charged medium and its EM field add to give the total energy tensor that obeys the dynamical equation without external force. In the investigated scalar theory of gravitation (\SET"), this assumption leads to charge non-conservation, hence an additional, \interaction" energy tensor T inter has to be postulated. The present work aims at constraining this tensor. -
In Defence of Classical Physics Abstract Classical Physics Seeks To
In defence of classical physics Abstract Classical physics seeks to find the laws of nature. I am of the opinion that classical Newtonian physics is “real” physics. This is in the sense that it relates to mechanical physics. I suggest that if physics is ever to succeed in determining a theory of everything it needs to introduce a more satisfactory invariant medium in order to do this. This is describing the laws of nature and retain the elementary foundational conditions of universal symmetry. [email protected] Quote: “Classical physics describes an inertial frame of reference within which bodies (objects) whose net force acting upon them is zero. These objects are not accelerated. They are either at rest or they move at a constant velocity in a straight line” [1] This means that classical physics is a model that describes time and space homogeneously. Classical physics seeks to find the laws of nature. Experiments and testing have traditionally found it difficult to isolate the conditions, influences and effects to achieve this objective. If scientists could do this they would discover the laws of nature and be able to describe these laws. Today I will discuss the relationship between classical Newtonian physics and Einstein’s Special Relativity model. I will share ideas as to why some scientists suggests there may be shortcomings in Einstein’s Special Relativity theory that might be able to successfully addressed, using my interpretation of both of these theories. The properties of the laws of nature are the most important invariants [2] of the universe and universal reality. -
Dersica NOTAS DE FÍSICA É Uma Pré-Publicaçso De Trabalhos Em Física Do CBPF
CBPF deRsica NOTAS DE FÍSICA é uma pré-publicaçSo de trabalhos em Física do CBPF NOTAS DE FÍSICA is a series of preprints from CBPF Pedidos de copies desta publicação devem ser enviados aos autores ou à: Requests for free copies of these reports should be addressed to: Drvbèo de Publicações do CBPF-CNPq Av. Wenceslau Braz, 71 - Fundos 22.290 - Rio de Janeiro - RJ. Brasil CBPF-NF-38/82 ON EXPERIMENTS TO DETECT POSSIBLE FAILURES OF RELATIVITY THEORY by U. A. Rodrigues1 and J. Tioano Ctntro BratiitirO dê Ptsquisas Físicas - CBPF/CNPq Rua XavUr Sigaud, ISO 22290 - Rfo dt Jantiro, RJ. - BRASIL * Instituto dt MatMitica IMECC - ONICAMP Caixa Postal 61SS 13100 - Canpinas, SP. - BRASIL ABSTRACT: condition* under which 41 may expect failure of Einstein's Relativity, ^^also give a comple te analysis of a recently proposed experiment by Kolen— Torr showing that it must give a negative result, ta 1. INTRODUCTION A number of experiments have been proposed or reported which supposedly would detect the motion of the laboratory relative to a preferential frame SQ (the ether), thus provinding an experi- mental distinction between the so called "Lorentz" Ether Theory and Einstein Theory of Relativity. Much of the confusion on the subject, as correctly identified (2) by Tyapkin . (where references until 1973 can be found) is pos- 3 nesiblw possibility due to Miller*y to tes* twh expexrifipentallo 4# 1957 startey relativityd a discussio. nH eo f asuggeste seeminglyd comparing the Doppler shift of two-maser beams whose atoms move in opposite directions. His calculation of the Doppler shift on the basis of pre-relativistic physics/ gave rise to the appearance of a term linearly dependent upon the velocity v of the labora- tory sytem moving with respect to the ether. -
The Controversy on the Conceptual Foundation of Space-Time Geometry
한국수학사학회지 제22권 제3호(2009년 8월), 273 - 292 The Controversy on the Conceptual Foundation of Space-Time Geometry Yonsei University Yang, Kyoung-Eun [email protected] According to historical commentators such as Newton and Einstein, bodily behaviors are causally explained by the geometrical structure of space-time whose existence analogous to that of material substance. This essay challenges this conventional wisdom of interpreting space-time geometry within both Newtonian and Einsteinian physics. By tracing recent historical studies on the interpretation of space-time geometry, I defends that space-time structure is a by-product of a more fundamental fact, the laws of motion. From this perspective, I will argue that the causal properties of space-time cannot provide an adequate account of the theory-change from Newtoninan to Einsteinian physics. key words: Space-Time Geometry, Substantivalism, Curved Space-Time, The Theory-Change from Newtonian Physics to Einsteinian Physics 1. Introduction The theory-change from Newtonian to Einsteinian physics is viewed by philosophers of science, historians and even physicists as an eloquent example of scientific revolution. According to the physicist Max Born, it signifies the ‘Einsteinian revolution,’ (Born 1965, 2) while the philosopher Karl Popper is of the view that Einstein ‘revolutionised physics.’ (Withrow 1967, 25) Thomas Kuhn, on his part, holds in his Structure of Scientific Revolutions, that the theory-change from Newtonian to Einsteinian physics provides a strong case for the occurrence of a revolution with obvious ‘paradigm changes.’ (Kuhn 1962): One [set of scientists] is embedded in a flat, the other in a curved, matrix of space. Practicing in different worlds, the two groups of - 273 - The Controversy on the Conceptual Foundation of Space-Time Geometry scientists see different things when they look from the same point in the same direction. -
Einstein, Nordström and the Early Demise of Scalar, Lorentz Covariant Theories of Gravitation
JOHN D. NORTON EINSTEIN, NORDSTRÖM AND THE EARLY DEMISE OF SCALAR, LORENTZ COVARIANT THEORIES OF GRAVITATION 1. INTRODUCTION The advent of the special theory of relativity in 1905 brought many problems for the physics community. One, it seemed, would not be a great source of trouble. It was the problem of reconciling Newtonian gravitation theory with the new theory of space and time. Indeed it seemed that Newtonian theory could be rendered compatible with special relativity by any number of small modifications, each of which would be unlikely to lead to any significant deviations from the empirically testable conse- quences of Newtonian theory.1 Einstein’s response to this problem is now legend. He decided almost immediately to abandon the search for a Lorentz covariant gravitation theory, for he had failed to construct such a theory that was compatible with the equality of inertial and gravitational mass. Positing what he later called the principle of equivalence, he decided that gravitation theory held the key to repairing what he perceived as the defect of the special theory of relativity—its relativity principle failed to apply to accelerated motion. He advanced a novel gravitation theory in which the gravitational potential was the now variable speed of light and in which special relativity held only as a limiting case. It is almost impossible for modern readers to view this story with their vision unclouded by the knowledge that Einstein’s fantastic 1907 speculations would lead to his greatest scientific success, the general theory of relativity. Yet, as we shall see, in 1 In the historical period under consideration, there was no single label for a gravitation theory compat- ible with special relativity. -
1 Hilary Putnam, Reason, Truth and History, (Cambridge: Harvard University Press, 1979). Henceforth 'RTH'. the Position Th
[The Journal of Philosophical Research XVII (1992): 313-345] Brains in a Vat, Subjectivity, and the Causal Theory of Reference Kirk Ludwig Department of Philosophy University of Florida Gainesville, FL 32611-8545 1. Introduction In the first chapter of Reason, Truth and History,1 Putnam argued that it is not epistemically possible that we are brains in a vat (of a certain sort). If his argument is correct, and can be extended in certain ways, then it seems that we can lay to rest the traditional skeptical worry that most or all of our beliefs about the external world are false. Putnam’s argument has two parts. The first is an argument for a theory of reference2 according to which we cannot refer to an object or a type of object unless we have had a certain sort of causal interaction with it. The second part argues from this theory to the conclusion that we can know that we are not brains in a vat. In this paper I will argue that Putnam’s argument to show that we cannot be brains in a vat is unsuccessful. However, the flaw is not in the argument from the theory of reference to the conclusion 1 Hilary Putnam, Reason, Truth and History, (Cambridge: Harvard University Press, 1979). Henceforth ‘RTH’. The position that Putnam advances in this first chapter is one that in later chapters of RTH he abandons in favor of the position that he calls ‘internal realism’. He represents the arguments he gives in chapter 1 as a problem posed for the ‘external realist’, who assumes the possibility of a God’s eye point of view. -
Abstract the Paper Is an Introduction Into General Ether Theory (GET
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by CERN Document Server Abstract The paper is an introduction into General Ether Theory (GET). We start with few assumptions about an universal “ether” in a New- tonian space-time which fulfils i @tρ + @i(ρv )=0 j i j ij @t(ρv )+@i(ρv v + p )=0 For an “effective metric” gµν we derive a Lagrangian where the Einstein equivalence principle is fulfilled: −1 00 11 22 33 √ L = LGR − (8πG) (Υg − Ξ(g + g + g )) −g We consider predictions (stable frozen stars instead of black holes, big bounce instead of big bang singularity, a dark matter term), quan- tization (regularization by an atomic ether, superposition of gravita- tional fields), related methodological questions (covariance, EPR cri- terion, Bohmian mechanics). 1 General Ether Theory Ilja Schmelzer∗ February 5, 2000 Contents 1 Introduction 2 2 General Ether Theory 5 2.1Thematerialpropertiesoftheether............... 5 2.2Conservationlaws......................... 6 2.3Lagrangeformalism........................ 7 3 Simple properties 9 3.1Energy-momentumtensor.................... 9 3.2Constraints............................ 10 4 Derivation of the Einstein equivalence principle 11 4.1 Higher order approximations in a Lagrange formalism . 13 4.2 Weakening the assumptions about the Lagrange formalism . 14 4.3Explanatorypowerofthederivation............... 15 5 Does usual matter fit into the GET scheme? 15 5.1TheroleoftheEinsteinLagrangian............... 16 5.2TheroleofLorentzsymmetry.................. 16 5.3Existingresearchaboutthesimilarity.............. 17 6 Comparison with RTG 18 ∗WIAS Berlin 2 7 Comparison with GR with four dark matter fields 19 8 Comparison with General Relativity 20 8.1Darkmatterandenergyconditions............... 20 8.2Homogeneousuniverse:nobigbangsingularity........ 21 8.3Isthereindependentevidenceforinflationtheory?....... 22 8.4Anewdarkmatterterm.................... -
Special Relativity for Economics Students
Special Relativity for Economics Students Takao Fujimoto, Dept of Econ, Fukuoka University (submitted to this Journal: 28th, April, 2006 ) 1Introduction In this note, an elementary account of special relativity is given. The knowledge of basic calculus is enough to understand the theory. In fact we do not use differentiation until we get to the part of composition of velocities. If you can accept the two hypotheses by Einstein, you may skip directly to Section 5. The following three sections are to explain that light is somehow different from sound, and thus compels us to make further assumptions about the nature of matter, if we stick to the existence of static ubiquitous ether as the medium of light. There is nothing original here. I have collected from various sources the parts which seem within the capacity of the average economics students. I heavily draws upon Harrison ([4]). And yet, something new in the way of exposition may be found in the subsections 5.4 and 6.1. Thus the reader can reach an important formula by Einstein that E = mc2 with all the necessary mathematical steps displayed explicitly. Thanks are due to a great friend of mine, Makoto Ogawa, for his comments. He read this note while he was travelling on the train between Tokyo and Niigata at an average speed of 150km/h. 2 An Experiment Using Sound We use the following symbols: c =speedoflight; s = speed of sound; V = velocity of another frame; x =positioninx-coordinate; t =time; 0 = value in another frame; V 2 β 1 2 ≡ r − c (Occasionally, some variables observed in another frame(O0) appear without a prime (0) to avoid complicated display of equations.) 1 2 Consider the following experiment depicted in Fig.1. -
A Solution of the Interpretation Problem of Lorentz Transformations
Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 30 July 2020 doi:10.20944/preprints202007.0705.v1 Article A Solution of the Interpretation Problem of Lorentz Transformations Grit Kalies* HTW University of Applied Sciences Dresden; 1 Friedrich-List-Platz, D-01069 Dresden, [email protected] * Correspondence: [email protected], Tel.: +49-351-462-2552 Abstract: For more than one hundred years, scientists dispute the correct interpretation of Lorentz transformations within the framework of the special theory of relativity of Albert Einstein. On the one hand, the changes in length, time and mass with increasing velocity are interpreted as apparent due to the observer dependence within special relativity. On the other hand, real changes are described corresponding to the experimental evidence of mass increase in particle accelerators or of clock delay. This ambiguity is accompanied by an ongoing controversy about valid Lorentz-transformed thermodynamic quantities such as entropy, pressure and temperature. In this paper is shown that the interpretation problem of the Lorentz transformations is genuinely anchored within the postulates of special relativity and can be solved on the basis of the thermodynamic approach of matter-energy equivalence, i.e. an energetic distinction between matter and mass. It is suggested that the velocity-dependent changes in state quantities are real in each case, in full agreement with the experimental evidence. Keywords: interpretation problem; Lorentz transformation; special relativity; thermodynamics; potential energy; space; time; entropy; non-mechanistic ether theory © 2020 by the author(s). Distributed under a Creative Commons CC BY license. Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 30 July 2020 doi:10.20944/preprints202007.0705.v1 2 of 25 1. -
Meaning Ain't in the Head 1. Hilary Putnam (1926-2016)
Louis deRosset { Spring 2019 Putnam: Meaning Ain't in the Head 1. Hilary Putnam (1926-2016): Philosopher, logician, mathematician. Putnam is famous for important and seminal work in just about every sub- field in philosophy. 2. Putnam's Target: . two unchallenged assumptions: (1) That knowing the meaning of a term is just a matter of being in a certain psychological state. (2) That the meaning of a term determines its extension. (700) DEFINITION: The extension of a term is its nominatum: • for names, definite descriptions: a certain person, place, or thing. EX.: `Obama', `The president of the U.S.' • for predicates: the set of things of which the predicate is true. EX.: `is a student', `is a person'. Putnam's Target is the Fregean theory of intentionality: The Fregean Triangle (yet again!): Sense 4< expresses determines #+ expression Nominatum Putnam (following Carnap) uses different terminology for the same ideas: Frege says... Putnam says... sense meaning, intension nominatum extension The Fregean Triangle (Putnam's terms): meaning 3; expresses determines expression extension"* Putnam adds the speaker to the picture [BLACKBOARD: draw the speaker with a speech balloon around the expression]. Louis deRosset { Spring 2019 In this situation, Putnam (following Frege), says that the speaker grasps the sense. [BLACKBOARD: draw the grasping relation between the speaker and the sense]. Putnam's target: (a) grasping a meaning is a psychological state; and (b) meaning determines extension, (i.e. if A and B grasp the same meaning, their expressions have the same extension.) 3. Putnam's Thesis: I shall argue that these two assumptions are not jointly sat- isfied by any notion, let alone any notion of meaning. -
A Historical Survey of Sir Karl Popper's Contribution to Quantum
A Historical Survey of Sir Karl Popper’s Contribution to Quantum Mechanics William M. Shields Worcester Polytechnic Institute, Worcester, Massachusetts, United States. E-mail: [email protected] Editors: Ion C. Baianu, Christoph Lehner, Debajyoti Gangopadhyay & Danko Georgiev Article history: Submitted on May 28, 2012; Accepted on July 28, 2012; Published on November 15, 2012. ir Karl Popper (1902–1994), though not 1 Popper in the physics journals trained as a physicist and embarrassed early Sin his career by a physics error pointed out by Sir Karl Popper, by any measure one of the preeminent Einstein and Bohr, ultimately made substantial con- philosophers of the twentieth century, died in 1994 at the tributions to the interpretation of quantum mechan- age of 92. He was productive to the end, publishing in ics. As was often the case, Popper initially formu- the year of his death a criticism of Kuhn’s incommensu- lated his position by criticizing the views of others – rability of paradigms [1]. That debate continues over his in this case Niels Bohr and Werner Heisenberg. Un- many and profound philosophical ideas and opinions is derlying Popper’s criticism was his belief that, first, hardly surprising, almost two decades after his death. The the Copenhagen interpretation of quantum mechan- proliferation of book-length biographies and scholarly ics abandoned scientific realism and second, the as- philosophical articles is testimony to Popper’s standing as sertion that quantum theory was complete (an asser- a philosopher [2–5]. Major conferences are also regularly tion rejected by Einstein among others) amounted held on the thought of Karl Popper [6, 7].