What Is Gravity and How Is Embedded in Mater Particles Giving Them Mass (Not the Higgs Field)? Stefan Mehedinteanu
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The Large Numbers Hypothesis: Outline of a Self-Similar Quantum
The Large Numbers Hypothesis: Outline of a self-similar quantum-cosmological Model H. GENREITH ∗ Institut f¨ur Geophysik und Meteorologie der Universit¨at zu K¨oln Abstract leads to a scaled quantum of action 3 In 1919 A. Einstein suspected first that gravita- H =Λ h (2) · tional fields could play an essential role in the in order to handle the Universe like an elementary structure of elementary particles. In 1937, P.A.M. particle. Hence the Universe should have an angu- Dirac found a miraculous link between the prop- lar momentum of about H/2π and it can be sus- erties of the visible Universe and elementary par- pected to be a huge rotating black-hole close to its ticles. Both conjectures stayed alive through the Kerr limit, or close to G¨odel’s spin [1, 2, 35, 10], following decades but still no final theory could be which is the value for the rotating cosmological so- derived to this issues. The herein suggested frac- lution to Einstein’s equations of General Relativity. tal model of the Universe gives a consistent expla- The recent discussion regarding the origin of and nation to Dirac’s Large Numbers Hypothesis and destiny of the Universe raises, for example, the combines the conjectures of Einstein and Dirac. question of where the Universe comes from. The main explanation for this is that time and space 1 Introduction were created with the big-bang and therefore the question of where the Universe is embedded or what 1.1 The Large Numbers Hypothesis happened before the creation, is not admissible. -
Experimental Tests of Quantum Gravity and Exotic Quantum Field Theory Effects
Advances in High Energy Physics Experimental Tests of Quantum Gravity and Exotic Quantum Field Theory Effects Guest Editors: Emil T. Akhmedov, Stephen Minter, Piero Nicolini, and Douglas Singleton Experimental Tests of Quantum Gravity and Exotic Quantum Field Theory Effects Advances in High Energy Physics Experimental Tests of Quantum Gravity and Exotic Quantum Field Theory Effects Guest Editors: Emil T. Akhmedov, Stephen Minter, Piero Nicolini, and Douglas Singleton Copyright © 2014 Hindawi Publishing Corporation. All rights reserved. This is a special issue published in “Advances in High Energy Physics.” All articles are open access articles distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Editorial Board Botio Betev, Switzerland Ian Jack, UK Neil Spooner, UK Duncan L. Carlsmith, USA Filipe R. Joaquim, Portugal Luca Stanco, Italy Kingman Cheung, Taiwan Piero Nicolini, Germany EliasC.Vagenas,Kuwait Shi-Hai Dong, Mexico Seog H. Oh, USA Nikos Varelas, USA Edmond C. Dukes, USA Sandip Pakvasa, USA Kadayam S. Viswanathan, Canada Amir H. Fatollahi, Iran Anastasios Petkou, Greece Yau W. Wah, USA Frank Filthaut, The Netherlands Alexey A. Petrov, USA Moran Wang, China Joseph Formaggio, USA Frederik Scholtz, South Africa Gongnan Xie, China Chao-Qiang Geng, Taiwan George Siopsis, USA Hong-Jian He, China Terry Sloan, UK Contents Experimental Tests of Quantum Gravity and Exotic Quantum Field Theory Effects,EmilT.Akhmedov, -
Non-Abelian Gravitoelectromagnetism and Applications at Finite Temperature
Hindawi Advances in High Energy Physics Volume 2020, Article ID 5193692, 8 pages https://doi.org/10.1155/2020/5193692 Research Article Non-Abelian Gravitoelectromagnetism and Applications at Finite Temperature A. F. Santos ,1 J. Ramos,2 and Faqir C. Khanna3 1Instituto de Física, Universidade Federal de Mato Grosso, 78060-900, Cuiabá, Mato Grosso, Brazil 2Faculty of Science, Burman University, Lacombe, Alberta, Canada T4L 2E5 3Department of Physics and Astronomy, University of Victoria, BC, Canada V8P 5C2 Correspondence should be addressed to A. F. Santos; alesandroferreira@fisica.ufmt.br Received 22 January 2020; Revised 9 March 2020; Accepted 18 March 2020; Published 3 April 2020 Academic Editor: Michele Arzano Copyright © 2020 A. F. Santos et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3. Studies about a formal analogy between the gravitational and the electromagnetic fields lead to the notion of Gravitoelectromagnetism (GEM) to describe gravitation. In fact, the GEM equations correspond to the weak-field approximation of the gravitation field. Here, a non-abelian extension of the GEM theory is considered. Using the Thermo Field Dynamics (TFD) formalism to introduce temperature effects, some interesting physical phenomena are investigated. The non-abelian GEM Stefan- Boltzmann law and the Casimir effect at zero and finite temperatures for this non-abelian field are calculated. 1. Introduction between equations for the Newton and Coulomb laws and the interest has increased with the discovery of the The Standard Model (SM) is a non-abelian gauge theory with Lense-Thirring effect, where a rotating mass generates a symmetry group Uð1Þ × SUð2Þ × SUð3Þ. -
Extended Gravitoelectromagnetism
sid.inpe.br/mtc-m21c/2020/12.21.15.21-RPQ EXTENDED GRAVITOELECTROMAGNETISM. III. MERCURY’S PERIHELION PRECESSION Gerson Otto Ludwig URL do documento original: <http://urlib.net/8JMKD3MGP3W34R/43QQMGL> INPE São José dos Campos 2020 PUBLICADO POR: Instituto Nacional de Pesquisas Espaciais - INPE Coordenação de Ensino, Pesquisa e Extensão (COEPE) Divisão de Biblioteca (DIBIB) CEP 12.227-010 São José dos Campos - SP - Brasil Tel.:(012) 3208-6923/7348 E-mail: [email protected] CONSELHO DE EDITORAÇÃO E PRESERVAÇÃO DA PRODUÇÃO INTELECTUAL DO INPE - CEPPII (PORTARIA No 176/2018/SEI- INPE): Presidente: Dra. Marley Cavalcante de Lima Moscati - Divisão de Modelagem Numérica do Sistema Terrestre (DIMNT) Membros: Dra. Carina Barros Mello - Coordenação de Pesquisa Aplicada e Desenvolvimento Tecnológico (COPDT) Dr. Alisson Dal Lago - Divisão de Heliofísica, Ciências Planetárias e Aeronomia (DIHPA) Dr. Evandro Albiach Branco - Divisão de Impactos, Adaptação e Vulnerabilidades (DIIAV) Dr. Evandro Marconi Rocco - Divisão de Mecânica Espacial e Controle (DIMEC) Dr. Hermann Johann Heinrich Kux - Divisão de Observação da Terra e Geoinfor- mática (DIOTG) Dra. Ieda Del Arco Sanches - Divisão de Pós-Graduação - (DIPGR) Silvia Castro Marcelino - Divisão de Biblioteca (DIBIB) BIBLIOTECA DIGITAL: Dr. Gerald Jean Francis Banon Clayton Martins Pereira - Divisão de Biblioteca (DIBIB) REVISÃO E NORMALIZAÇÃO DOCUMENTÁRIA: Simone Angélica Del Ducca Barbedo - Divisão de Biblioteca (DIBIB) André Luis Dias Fernandes - Divisão de Biblioteca (DIBIB) EDITORAÇÃO ELETRÔNICA: Ivone Martins - Divisão de Biblioteca (DIBIB) Cauê Silva Fróes - Divisão de Biblioteca (DIBIB) sid.inpe.br/mtc-m21c/2020/12.21.15.21-RPQ EXTENDED GRAVITOELECTROMAGNETISM. III. MERCURY’S PERIHELION PRECESSION Gerson Otto Ludwig URL do documento original: <http://urlib.net/8JMKD3MGP3W34R/43QQMGL> INPE São José dos Campos 2020 Esta obra foi licenciada sob uma Licença Creative Commons Atribuição-NãoComercial 3.0 Não Adaptada. -
Gravitoelectromagnetism, Solar System Tests, and Weak-Field Solutions in F (T, B) Gravity with Observational Constraints
universe Article Gravitoelectromagnetism, Solar System Tests, and Weak-Field Solutions in f (T, B) Gravity with Observational Constraints Gabriel Farrugia 1,2,*, Jackson Levi Said 1,2 and Andrew Finch 2 1 Institute of Space Sciences and Astronomy, University of Malta, Msida MSD 2080, Malta; [email protected] 2 Department of Physics, University of Malta, Msida MSD 2080, Malta; andrew.fi[email protected] * Correspondence: [email protected] Received: 14 December 2019; Accepted: 14 February 2020; Published: 18 February 2020 Abstract: Gravitomagnetism characterizes phenomena in the weak-field limit within the context of rotating systems. These are mainly manifested in the geodetic and Lense-Thirring effects. The geodetic effect describes the precession of the spin of a gyroscope in orbit about a massive static central object, while the Lense-Thirring effect expresses the analogous effect for the precession of the orbit about a rotating source. In this work, we explore these effects in the framework of Teleparallel Gravity and investigate how these effects may impact recent and future missions. We find that teleparallel theories of gravity may have an important impact on these effects which may constrain potential models within these theories. Keywords: gravitoelectromagnetism; geodetic; Lense-Thirring; teleparallel; f (T, B) gravity 1. Introduction General relativity (GR) has passed numerous observational tests since its inception just over a century ago, confirming its predictive power. The detection of gravitational waves in 2015 [1] agreed with the strong field predictions of GR, as does its solar system behavior [2]. However, GR requires a large portion of dark matter to explain the dynamics of galaxies [3,4] and even greater contributions from dark energy to produce current observations of cosmology [5]. -
Cosmological Matter-Antimatter Asymmetry and Antimatter in the Universe
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by CERN Document Server COSMOLOGICAL MATTER-ANTIMATTER ASYMMETRY AND ANTIMATTER IN THE UNIVERSE A.D. DOLGOV INFN, sezione di Ferrara, Via Paradiso, 12 - 44100 Ferrara, Italy and ITEP, Bol. Cheremushkinskaya 25, Moscow 113259, Russia Models of baryogenesis which may lead to astronomically significant amount of antimatter in the universe are reviewed. Observational features are briefly discussed. 1 Introduction Prediction of antimatter by Dirac 1 (1928) and quick subsequent discovery of the first antimatter particle, positron, by Anderson 2 (1933) are among greatest scientific achievements of XX cen- tury. Discovery of antiproton 22 years later 3 was the next step which had opened a whole new world of antiparticles. Now for (almost) every elementary particle a corresponding antiparticle has also been observed. The latter have opposite signs of all associated charges and, according to CPT theorem4, the same masses and, if unstable, life-times. Such symmetry between par- ticles and antiparticles naturally leads to suggestion that the universe as a whole may be also symmetric with respect to transformation from particles to antiparticles and there should exist astronomically large regions consisting of antimatter: anti-stars, clouds of diffuse antimatter, whole anti-galaxies, or even large clusters of anti-galaxies. As Dirac 5 said in his Nobel lecture a: “... we must regard it rather as an accident that the Earth (and presumably the whole solar system), contains a preponderance of negative electrons and positive protons. It is quite possible that for some of the stars it is the other way about, these stars being built up mainly of positrons and negative protons. -
Fundamental Geometrodynamic Justification of Gravitomagnetism
Issue 2 (October) PROGRESS IN PHYSICS Volume 16 (2020) Fundamental Geometrodynamic Justification of Gravitomagnetism (I) G. G. Nyambuya National University of Science and Technology, Faculty of Applied Sciences – Department of Applied Physics, Fundamental Theoretical and Astrophysics Group, P.O. Box 939, Ascot, Bulawayo, Republic of Zimbabwe. E-mail: [email protected] At a most fundamental level, gravitomagnetism is generally assumed to emerge from the General Theory of Relativity (GTR) as a first order approximation and not as an exact physical phenomenon. This is despite the fact that one can justify its existence from the Law of Conservation of Mass-Energy-Momentum in much the same manner one can justify Maxwell’s Theory of Electrodynamics. The major reason for this is that in the widely accepted GTR, Einstein cast gravitation as a geometric phenomenon to be understood from the vantage point of the dynamics of the metric of spacetime. In the literature, nowhere has it been demonstrated that one can harness the Maxwell Equa- tions applicable to the case of gravitation – i.e. equations that describe the gravitational phenomenon as having a magnetic-like component just as happens in Maxwellian Elec- trodynamics. Herein, we show that – under certain acceptable conditions where Weyl’s conformal scalar [1] is assumed to be a new kind of pseudo-scalar and the metric of spacetime is decomposed as gµν = AµAν so that it is a direct product of the components of a four-vector Aµ – gravitomagnetism can be given an exact description from within Weyl’s beautiful but supposedly failed geometry. My work always tried to unite the Truth with the Beautiful, consistent mathematical framework that has a direct corre- but when I had to choose one or the other, I usually chose the spondence with physical and natural reality as we know it. -
Quantum Wave Mechanics 3Rd Ed
Geometrical description of photons, electrons and composite particles. Dimensional analysis of electrical charge. Quantum gravity, gravitational frequency spectrum, mass oscillator synchronization, spectral energy density modulation and phase conjugation. Origin of charge, fine structure constant and inertia. Prospects for wave-based EM propulsion. Quantum Wave Mechanics by Larry Reed Order the complete book from the publisher Booklocker.com https://www.booklocker.com/p/books/10176.html?s=pdf or from your favorite neighborhood or online bookstore. To my parents who never knew the result of their great experiment Copyright © 2019, 2020 by Larry J. Reed All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, recording or otherwise, without the prior written permission of the author. Printed on acid-free paper. Library of Congress Control Number: 2018901065 ISBN: 978-1-63492-964-6 paperback To order additional copies of this book, contact: www.booklocker.com CONTENTS Preface ........................................................................................................................... ix SECTION 1 – LIGHT 1. Photon model ................................................................................................................. 1 2. Quantum vacuum ......................................................................................................... 13 3. Electromagnetic 4-Potential ....................................................................................... -
About Gravitomagnetism
About Gravitomagnetism Behrooz Malekolkalami∗ and Mehrdad Farhoudi† Department of Physics, Shahid Beheshti University, G. C., Evin, Tehran 19839, Iran September 2, 2008 Abstract The gravitomagnetic field is the force exerted by a moving body on the basis of the intriguing interplay between geometry and dynamics which is the analog to the magnetic field of a moving charged body in electromagnetism. The existence of such a field has been demonstrated based on special relativity approach and also by special relativity plus the gravitational time dilation for two different cases, a moving infinite line and a uniformly moving point mass, respectively. We treat these two approaches when the applied cases are switched while appropriate key points are employed. Thus, we demonstrate that the strength of the resulted gravitomagnetic field in the latter approach is twice the former. Then, we also discuss the full linearized general relativity and show that it should give the same strength for gravitomagnetic field as the latter approach. Hence, through an exact analogy with the elec- trodynamic equations, we present an argument in order to indicate the best definition amongst those considered in this issue in the literature. Finally, we investigate the gravitomagnetic effects and consequences of different definitions on the geodesic equation including the second order approximation terms. arXiv:gr-qc/0610095v2 13 Nov 2009 PACS number: 03.30. + p ; 04.20. q − Keywords: Gravitomagnetism; Special Relativity; Linearized General Relativity. 1 Introduction The analogous idea of the electric theory and the Newtonian gravita- tional theory inspiring a Maxwell–type gravitational theory is dated back to the second half of the nineteenth century [1]–[4]. -
Curriculum Vitae: M. Coleman Miller Date of Birth
Curriculum Vitae: M. Coleman Miller Date of Birth: 6 July 1968 The University of Maryland Place of Birth: Detroit, MI Department of Astronomy Citizenship: USA College Park, MD 20742-2421 E-mail: [email protected] Telephone: (301) 405-1037 FAX: (301) 314-9067 Webpage: http://www.astro.umd.edu/∼miller/ Research Interests Theoretical Astrophysics Computer Simulations and Modeling Physics of Dense Matter Physics in Strong Magnetic Fields General Relativity Gravitational Radiation PlasmaPhysics GravitationalLensing Education 1984 - 1990 California Institute of Technology, Pasadena, California Department: Physics, with Computer Science minor Thesis Topic: Radiation Transfer in Very Strong Magnetic Fields Degrees: M.S. (1986), Ph.D. (1990) (Advisor: E. S. Phinney) National Science Foundation Graduate Fellow, 1984-1987 1980 - 1984 Hillsdale College, Hillsdale, Michigan Major fields: Mathematics and Physics Degree: B.S., Summa Cum Laude (1984) Research Experience 2009 - Professor of Astronomy, University of Maryland 2020 Radboud Excellence Professor, Radboud University, Nijmegen, Netherlands 2017 - 2019 Chair, Maryland Astronomy Center for Theory and Computation 2015 - 2019 Astronomy Director, Joint Space-Science Institute 2013 - 2014 Director, Joint Space-Science Institute 2004 - 2009 Associate Professor of Astronomy, University of Maryland 2004 - 2006 Chair, Maryland Astronomy Center for Theory and Computation 1999 - 2004 Assistant Professor of Astronomy, University of Maryland 1997 - 1999 Member of the AXAF Science Center, Chicago beta test site 1994 - 1997 Compton Gamma-Ray Observatory Fellow, University of Chicago 1993 - 1999 Research Scientist, University of Chicago Constructed the first detailed model of kilohertz QPOs of neutron star low-mass X- ray binaries, investigated gravitational lensing of gamma-ray bursts and galaxies, and performed various studies of accreting black holes and neutron stars. -
Calculation of the Gravitoelectromagnetism Force for Cylindrically Symmetric Spacetime
U.P.B. Sci. Bull., Series A, Vol. 76, Iss. 3, 2014 ISSN 1223-7027 CALCULATION OF THE GRAVITOELECTROMAGNETISM FORCE FOR CYLINDRICALLY SYMMETRIC SPACETIME Morteza Yavari1 Keywords: Threading formalism, cylindrically symmetric spacetime, gravito- electromagnetism force Using 1+3 splitting concepts of a spacetime, we first discuss the gravito- electromagnetism force in terms of the gravitoelectric and gravitomagnetic fields. By applying the Hamilton-Jacobi method, the trajectory of a moving test particle in the cylindrically symmetric spacetime is calculated. Finally, the gravitoelectro- magnetism force and the corresponding potential function are determined. 1. Introduction As is well known [1], theory of general relativity discussed the motion of Mercury perihelion in terms of a relativistic gravitoelectric field correction to the Newtonian gravitational potential of the Sun. Also it contains a gravitomagnetic field due to proper rotation of the Sun and this field influence on planetary orbits, [2-4]. The gravitomagnetic field is much smaller than the gravitoelectric one. Theory of gravitoelectromagnetism1 that assumes a perfect isomorphism between gravitation and electromagnetism has been established by Heaviside [6] and Jefimenko, [7]. In the same way that a magnetic field is created when a charged object rotates, a gravitomagnetic field is created when a massive body rotates and this effect is too small. The gravitomagnetic field plays an important role in some astrophysical scenarios such as neutron stars [8-10] and rotating black holes. To detect this field, it is necessary to examine a very massive object or build an instrument that is very sensitive. The gravitomagnetic field of Earth can be measured by studying the motion of satellites LAGEOS2, [11,12]. -
Grand Unified Theories - Ii
- 31 - GRAND UNIFIED THEORIES - II J. Ellis CERN, Geneva, Switzerland INTRODUCTION In the previous lectures1»2) you have seen how the inadequacies of the standard SU(3) x SU(2) x U(l) model of the strong, weak, and electromagnetic interactions motivate the construction of grand unified theories (GUTs) which are sketched in Fig. 1. The strategy- then adopted was to assign the fundamental fermions — quarks and leptons — to "generations" forming economical representations of a simple grand unifying group G. The observed dis• parity of the strong and weak coupling constants implies that the group G must be broken down at a very high energy scale. The properties of the running coupling constants in re- normalizable field theories enable one to estimate3) this breaking scale to be around 1015 GeV in simple models'*) such as SU(5). Although the grand unification symmetry is very strongly broken, it can still be used to make predictions for parameters observable at low energies. In addition to the quantization of electromagnetic charge (|Q_|/|Q | = 1) which ^e p flows from the embedding of electromagnetic U(l) into a simple group, it is possible to 2 make predictions for the neutral weak mixing parameter sin 6W and for the ratios of certain 2 quark and lepton masses. While the predictions for sin 9W and m^/m^. are spectacularly successful, there are clouds over the predictions for the masses of other quarks1»2). The real tests of GUTs lie, however, with their predictions for new interactions, which can lead to qualitatively new phenomena such as baryon decay or neutrino masses and oscilla• tions.