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Tesi sul tema "Relativity (Physics)"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 31 luglio 2024

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1

Starr, I. M. "Multidimensional relativity." Thesis, University of Leeds, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235269.

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2

Drake, S. P. "Axisymmetric spacetimes in relativity /." Title page, contents and introduction only, 1998. http://web4.library.adelaide.edu.au/theses/09PH/09phd763.pdf.

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3

Farr, Will M. (Will Meierjurgen). "Numerical relativity from a gauge theory perspective." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62871.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2010.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student submitted PDF version of thesis.<br>Includes bibliographical references (p. 121-123).<br>I present a new method for numerical simulations of general relativistic systems that eliminates constraint violating modes without the need for constraint damping or the introduction of extra dynamical fields. The method is a type of variational integrat

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4

Sjödin, Robert. "Cosmic strings in general relativity." Thesis, University of Southampton, 2001. https://eprints.soton.ac.uk/50619/.

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In this thesis we examine the properties of Cosmic Strings in the theory of General Relativity. We begin by considering static Cosmic Strings in flat space-time. We derive the field equations for the Cosmic String and show that the solution depends upon a single scaling parameter a which is constructed from the physical constants. Using this result we construct 1-parameter families of solutions which depend on an auxiliary parameter e and which describe the thin-string limit of a Cosmic String. By interpreting these solutions as elements of the simplified Colombeau algebra we may interpret the

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5

O'Donnell, N. "Electromagnetic radiation reaction in general relativity." Thesis, Bucks New University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384632.

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6

Kotze, Jacques. "An introduction to general relativity and entropy bounds." Thesis, Stellenbosch : University of Stellenbosch, 2006. http://hdl.handle.net/10019.1/17375.

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Thesis (MSc)--University of Stellenbosch, 2006.<br>ENGLISH ABSTRACT: Entropy bounds arise from Black hole thermodynamics and are a significant departure from the conventional understanding of the information in a given region. This shift in paradigm is a consequence of the the fact that there is an unexpected relationship between the area and the entropy of a given region of spacetime. Entropy bounds are simplified formulations which are ultimately attempting to be developed into the complete and broad conjecture of the Holographic Principle. This hasn’t been achieved successfully as yet.

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7

Sixaba, Vuyile. "Geometry of deformed special relativity." Thesis, Rhodes University, 2018. http://hdl.handle.net/10962/59478.

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We undertake a study of the classical regime in which Planck's constant and Newton's gravitational constant are negligible, but not their ratio, the Planck mass, in hopes that this could possibly lead to testable quantum gravity (QG) effects in a classical regime. In this quest for QG phenomenology we consider modifications of the standard dispersion relation of a free particle known as deformed special relativity (DSR). We try to geometrize DSR to find the geometric origin of the spacetime and momentum space. In particular, we adopt the framework of Hamilton geometry which is set up on phase

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8

Roy, Ian M. "Projective and Ricci collineations in general relativity." Thesis, University of Aberdeen, 1998. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU099861.

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The thesis considers various problems in general relativity concerning projective and Ricci collineations. A result due to Yano in the maximum dimension of the projective algebra on a non-flat space-time is improved using a pointwise classification scheme. The converse of a result, relating Weyl projective vector fields and curvature collineations under certain well defined circumstances, is given. A result is presented showing that, under specified conditions a space-time admitting a proper special projective vector field admits a proper special conformal vector field and vice versa. The work

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9

Walter, Scott. "Henri Poincaré, theoretical Physics, and Relativity Theory in Paris." Wissenschaftlicher Verlag Harri Deutsch, 2011. https://slub.qucosa.de/id/qucosa%3A16256.

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10

Sylvester, Alex J. "Testing General Relativity with Spherical Resonant Mass Detectors." Thesis, University of Louisiana at Lafayette, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10002423.

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<p> Gravitational waves in <i>f</i>(<i>R</i>) gravity excite monopole and m = 0±2 quadrupole resonance modes of a spherical detector. This document reviews the basic ideas of general relativity and gravitational waves, and then applies those concepts to an <i>f</i>(<i> R</i>) gravitational wave. The acoustic response of a GW incident with a spherical detector is reviewed in detail, and the absorption cross section for an <i>f</i>(<i>R</i>) GW impinging on the spherical detector is calculated. Minimum detectable scalar wave amplitudes are explored for the Mario Schenberg detector. The ma

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11

Murdock, David P. 1954. "Proton scattering as a probe of relativity in nuclei." Thesis, Massachusetts Institute of Technology, 1987. http://hdl.handle.net/1721.1/45690.

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12

Baker, Theresa Mary. "Cosmological tests of general relativity." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:dd5fda2f-d552-4130-839c-71c1a375ef49.

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Understanding the apparent accelerating expansion rate of the universe is a challenge for modern cosmology. One category of explanations is that we are using the wrong gravitational physics to study the observations. Our paradigmatic theory of gravity – Einstein’s theory of General Relativity – may be subsumed by a larger theory. This thesis develops a selection of tools for testing General Relativity and the numerous alternative theories of gravity that have been put forward. I advocate that an elegant and efficient way to test this space of theories is through the use of parameterized framew

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13

Samuelsson, Lars. "Stellar Models in General Relativity." Doctoral thesis, Stockholm : Univ, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-13.

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14

Mena, Filipe Artur Pacheco Neves Carteado. "Inhomogeneous and anisotropic space times in general relativity." Thesis, Queen Mary, University of London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.252193.

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15

Hossack, Andrew D. "Sectional curvature and plane waves in general relativity." Thesis, University of Aberdeen, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314609.

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This thesis considers several problems in general relativity which involve the <i>sectional curvature function</i> σ. The causal structure defined by Lorentzian metrics on space-times makes the behaviour of σ more interesting in general relativity than in classical (positive-definite) geometry and comparisons between results in classical and Lorentzian geometry are made which illustrate this point. The thesis as a whole emphasises the geometrical rather than the physical aspects of the theory. There are three principal areas of study contained in this thesis: A theorem by J.L. Synge which rela

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16

Nahmad-Achar, E. "Angular momentum and metric perturbations in general relativity." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382639.

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17

Cooney, Alan James. "Astrophysical Tests of Gravity Beyond General Relativity." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/294014.

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Abstract (sommario):

The General theory of Relativity (GR) brought gravity into accord with the principles of locality and relativity. Since its discovery it has been preeminent, recognized as the most accurate description of gravity on the many scales where it has been tested. During this period, seemingly radical predictions like the existence of black holes and the expansion of the Universe have been verified and testify to the great leap of insight that GR represented in our understanding of space and time. However not all precision observations of astrophysical systems have yielded easily to interpretation wi

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18

Keir, Joseph. "Aspects of stability and instability in general relativity." Thesis, University of Cambridge, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709537.

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19

Mertens, James B. "Application of Methods from Numerical Relativity to Late-Universe Cosmology." Case Western Reserve University School of Graduate Studies / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case1484497200032472.

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20

Holmes, G. "Some algorithmic approaches to exact solutions in general relativity." Thesis, University of Southampton, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373932.

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21

Lonie, David P. "Projective symmetries, holonomy and curvature structure in general relativity." Thesis, University of Aberdeen, 1995. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU082893.

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In the mathematical study of general relativity it is valuable to consider the classification and properties of the metric connection and Riemannian curvature derived from the spacetime metric. The aim of this thesis is to present various results obtained regarding (i) the holonomy groups of simply-connected spacetimes (ii) the problem of deciding if a connection is a metric connection (iii) a sub-class of curvature preserving symmetries and (iv) geodesic preserving symmetries. The holonomy group associated with a spacetime provides a global classification scheme for the metric connection. Aft

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22

Durkee, Mark N. "New approaches to higher-dimensional general relativity." Thesis, University of Cambridge, 2011. https://www.repository.cam.ac.uk/handle/1810/240580.

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This thesis considers various aspects of general relativity in more than four spacetime dimensions. Firstly, I review the generalization to higher dimensions of the algebraic classification of the Weyl tensor and the Newman-Penrose formalism. In four dimensions, these techniques have proved useful for studying many aspects of general relativity, and it is hoped that their higher dimensional generalizations will prove equally useful in the future. Unfortunately, many calculations using the Newman-Penrose formalism can be unnecessarily complicated. To address this, I describe new work introducin

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23

Boudreaux, Andrew. "An investigation of student understanding of Galilean relativity /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/9718.

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24

Tian, Chi. "Exploring General Relativistic Effects in the Universe Through Numerical Relativity." Case Western Reserve University School of Graduate Studies / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1595607121795162.

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25

Ilhan, Ibrahim B. "Dynamics Of Extended Objects In General Relativity." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610981/index.pdf.

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In this thesis, multipole expansions of mass, momentum and stress density will be made for a body in Newtonian mechanics. Using these definitions<br>momentum, angular momentum, center of mass, force and torque are defined for N gravitationally interacting isolated bodies. Equations of motions of such a system are derived. Definitions of momentum, angular momentum, center of mass, force and torque are made in a relativistic theory. Dynamical (gravitational) skeleton is defined and the multipole moments of the dynamical skeleton are found. Equations of motion for a test body moving in a gravitat

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26

Corbo, Joel C. (Joel Christopher) 1982. "Superdense objects in general relativity : modeling neutron stars with free quark cores." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/32736.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2004.<br>Includes bibliographical references (p. 65-66).<br>We present the results of a numerical study of neutron stars made of a color-flavor locked (CFL) quark matter center and a nuclear fluid exterior. CFL quark matter is a theoretical state of matter which may exist at the center of highly dense neutron stars. To verify its existence, we need to make falsifiable predictions about the differences between typical neutron stars and CFL hybrid neutron stars and verify them observationally. This thesis begins this process

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27

Adhyam, Sundararajan Pranesh. "Using perturbation theory to understand the two body problem in general relativity." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/54597.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2009.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 171-178).<br>Binary systems composed of compact objects (neutron stars and black holes) radiate gravitational waves (GWs). The prospect of detecting these GWs using ground and space based experiments has made it imperative to understand the dynamics of such compact binaries. This work describes several advances in our ability to model compact binaries and extract the rich science they encode. A major part of this dissertation focuse

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28

Janca, Andrew Joseph. "Physical constraints on causality-violating spacetimes in general relativity." NCSU, 2007. http://www.lib.ncsu.edu/theses/available/etd-03252007-193645/.

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The theoretical possibility of global causality violation has long been a problem within general relativity, for there exists a large number of model spacetimes known to admit <I>closed timelike curves</I>, trajectories allowing a timelike observer to return to some point in her own past. However, nearly all such known models have some unphysical feature. These physicality issues rendered causality-violation to the status of an interesting but safely theoretical problem until twenty years ago, when the appearance of a new type of causality-violating model spacetime and the subsequent prolifera

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29

Scherr, Rachel Ellen. "An investigation of student understanding of basic concepts in special relativity /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/9681.

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30

Vlasov, Igor. "Reference frames and equations of motion in the first PPN approximation of scaler-tensor and vector-tensor theories of gravity." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4372.

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Thesis (Ph. D.)--University of Missouri-Columbia, 2006.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (Mar. 1, 2007). Vita. Includes bibliographical references.

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31

Lin, Yinghua. "Computer aided instruction of special relativity." Virtual Press, 1991. http://liblink.bsu.edu/uhtbin/catkey/774750.

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This thesis creates an small expert system that is based on Einstein's special relativity. The basic knowledge of special relativity and the bases for building an expert system are described. The concepts of special relativity are put into a knowledge base by changing the formulas into rules and facts. The Prolog language was used to develop the expert system. New information can be input that does not contradict the rules and facts already in the database. The system also uses computer graphics to demonstrate the physical concepts of relativity. By using this expert system, one can teach the

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32

Negm, Dorry A. "The physical structure of the energy-momentum tensor in general relativity." Thesis, University of Aberdeen, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328743.

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33

Eriksson, Daniel. "Perturbative Methods in General Relativity." Doctoral thesis, Umeå : Department of Physics, Umeå University, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1488.

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34

Reid, James Andrew. "Conformal holonomy and theoretical gravitational physics." Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=215305.

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Conformal holonomy theory is the holonomy theory of the tractor connection on a conformal manifold. In this thesis, we present the first application of conformal holonomy theory to theoretical physics and determine the conformal holonomy groups/algebras of physically relevant spaces. After recalling some necessary background on conformal structures, tractor bundles and conformal holonomy theory in chapter 1, we begin in chapter 2 by discussing the role of conformal holonomy in the gauge-theoretic MacDowell-Mansouri formulation of general relativity. We show that the gauge algebra of this formu

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35

Van, der Walt Petrus Johannes. "Numerical relativity on cosmological past null cones." Thesis, Rhodes University, 2013. http://hdl.handle.net/10962/d1002959.

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The observational approach to cosmology is the endeavour to reconstruct the geometry of the Universe using only data that is theoretically verifiable within the causal boundaries of a cosmological observer. Using this approach, it was shown in [36] that given ideal cosmological observations, the only essential assumption necessary to determine the geometry of the Universe is a theory of gravity. Assuming General Relativity, the full set of Einstein field equations (EFEs) can be used to reconstruct the geometry of the Universe using direct observations on the past null cone (PNC) as initial con

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36

Honeycutt, David Carl. "Relativity via a Bergmannian Chronometric in a squared-dimensional hyperspace." Diss., Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/27984.

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37

Perry, George Philip. "Isolated systems in general relativity : the gravitational-electrostatic two-body balance problem and the gravitational geon." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0006/NQ34282.pdf.

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38

Boonserm, Petarpa. "Some exact solutions in general relativity : a thesis submitted to the Victoria University of Wellington in fulfilment of the requirements for the degree of Master of Science in Mathematics /." ResearchArchive@Victoria e-Thesis, 2005. http://hdl.handle.net/10063/16.

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39

Fontana, Rodrigo Dal Bosco. "Universos D-dimensionais e soluções de cordas negras." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-08112013-103203/.

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Durante os últimos 90 anos temos visto o grande esplendor que a teoria da relatividade geral de Einstein alcançou em suas diversas previsões. Esta dissertação é um estudo a respeito desta teoria e suas extrapolações. Falaremos de início acerca da primeira solução das equações de Einstein para buracos negros obtida por Karl Schwarzschild em 1916: o buraco negro esfericamente simétrico e sem carga. Trataremos das possíveis órbitas neste tipo de solução bem como de perturbações gravitacionais e escalares. Ainda utilizando a solução de Schwarzschild, adentraremos os tópicos desenvolvidos recenteme

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40

Dixon, Thomas S. "Problems for presentism the inconsistency of presentism with the special theory of relativity /." Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1594478181&sid=2&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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41

Ahmadi, Morteza, and University of Lethbridge Faculty of Arts and Science. "Aspects of black hole physics." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2006, 2006. http://hdl.handle.net/10133/386.

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In this thesis, aspects of the physics of black holes are reviewed and new results in black hole thermodynamics are presented. First, general black hole solutions of Einstein’s equations of general relativity are mentioned and a proof of conservation law of energy and momentum in general relativity is presented. Aspects of the laws of black hole mechanics and Hawking radiation are then studied. Two proposals which attempt to explain the origin of black hole entropy (the brick wall model and entanglement entropy) are then discussed. Finally, some recent work related to the possible production a

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42

Sarkar, Souvik. "Consequences of Quantum Mechanics in General Relativity." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1535709090287102.

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43

Verma, Ashok Kumar. "Improvement of the planetary ephemerides using spacecraft navigation data and its application to fundamental physics." Thesis, Besançon, 2013. http://www.theses.fr/2013BESA2030/document.

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Les éphémérides planétaires jouent un rôle important pour la navigation des missions spatiales actuelles et la mise en place des missions futures ainsi que la réduction et l'analyse des observations astronomiques les plus précises. Les éphémérides planétaires actuelles (DE, INPOP, EPM)L'objectif de la thèse est d'utiliser des archives de données de missions spatiales passées et présentes et de fournir des outils d'analyse pour l'amélioration de l'éphéméride de données pour l'amélioration de l’éphéméride planétaire planétaire INPOP, ainsi que pour une meilleure utilisation des éphémérides pour

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44

McClune, James C. "Some effects of spacetime curvature in general relativity /." free to MU campus, to others for purchase, 1997. http://wwwlib.umi.com/cr/mo/fullcit?p9841171.

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45

Panassiti, Antonio. "General relativity limit of Brans-Dicke gravity." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23344/.

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In Brans-Dicke gravity a scalar field non-minimally coupled with the curvature acts as a new gravitational degree of freedom in addition to the usual metric field of General Relativity. Usually, when the coupling ω of the scalar field diverges, the latter approaches a constant and the solutions of the theory reduce to those generated by the Einstein equations with the same energy-momentum tensor as source. However, in the limit ω → ∞, the static and spherically symmetric vacuum solutions, called Brans solutions, do not reduce to the Schwarzschild metric, the only solution of General Relativity

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46

Bonifacio, Paolo. "Spacetime conformal fluctuations and quantum dephasing." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=33587.

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47

Dorkenoo, Leggat Alasdair. "Dirac solitons in general relativity and conformal gravity." Thesis, University of St Andrews, 2017. http://hdl.handle.net/10023/12127.

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Static, spherically-symmetric particle-like solutions to the coupled Einstein-Dirac and Einstein-Dirac-Maxwell equations have been studied by Finster, Smoller and Yau (FSY). In their work, FSY left the fermion mass as a parameter set to ±1. This thesis generalises these equations to include the Higgs field, letting the fermion mass become a function through coupling, μ. We discuss the dynamics associated with the Higgs field and find that there exist qualitatively similar solutions to those found by FSY, with well behaved, non-divergent metric components and electrostatic potential, close to t

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48

Stark, Elizabeth. "Gravitoelectromagnetism and the question of stability in general relativity." Monash University, School of Mathematical Sciences, 2004. http://arrow.monash.edu.au/hdl/1959.1/9509.

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49

Henriksson, Johan. "Molecular Quadratic Response Properties with Inclusion of Relativity." Doctoral thesis, Linköping : Department of Physics, Chemistry and Biology, Linköping University, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11035.

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50

Diener, Jacobus Petrus Willem. "Relativistic mean-field theory applied to the study of neutron star properties." Thesis, Link to the online version, 2008. http://hdl.handle.net/10019/760.

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