21. SIMULATING GENERAL RELATIVITY Some examples of the phenomena of general relativity are simulated. This provides a graphical sight on the main general relativity concepts. The simulations include solutions in 3D (XY +time) and 4D (XYZ+time) spaces. http://www.raczynski.com/pn/genrel.htm

SIMULATING GENERAL RELATIVITY Stanislaw Raczynski stanracz@prodigy.net.mx ABSTRACT Some examples of the phenomena of general relativity are simulated. This provides a graphical and quite illustrative sight on the main general relativity concepts. The simulations include solutions in 3D (XY +time) and 4D (XYZ+time) spaces. The solutions are more general than those which can be obtained analytically. For example, the approach to the black hole is simulated not only as a radial particle movement, but as an arbitrary trajectory in the 3D space. The distortion of images of far objects seen through a neighborhood of a black hole is simulated using photon trajectories in 4D space. Also the entrance of an arbitrary trajectory into the horizon of the black hole is simulated both with the coordinate time (seen by the static observer) and with the proper time (clock) of the moving body. Time distortion at the neighborhood of the black hole is shown as a 3D “space-distortion” plot. Interesting simulation experiments are also shown for the rotating black hole. Click here to download the complete article Consult also: http://www.raczynski.com/pn/pn.htm

22. General Relativity And Quantum Cosmology Preprints general relativity and Quantum Cosmology preprints general relativity and Quantum Cosmology preprints on the xxx.lanl.gov server (since 7/92). U.S. National Science Foundation ; Los Alamos http://rdre1.inktomi.com/click?u=http://xxx.lanl.gov/archive/gr-qc&y=02DFD15

23. Gen. Relativity Cosmology general relativity COSMOLOGY. As Elementary Particle Physicists direct their attention ``down toward the indescribably tiny, so http://musr.physics.ubc.ca/~jess/p200/cosm/cosm.html

Next: Astronomy As Elementary Particle Physicists direct their attention ``down'' toward the indescribably tiny, so Cosmologists turn their gaze ``upward'' toward the unfathomably huge. Of course, these days both are increasingly likely to be incarnate in the same individual - I'll get to that later. As one who has never looked through a telescope larger than I could carry, I am certain to give short shrift to the magnificent observational science of astronomy , which provides cosmology (a theoretical discipline) with all its data. But a summary of the former without good colour plates of star fields and nebulae would be a terrible waste anyway, so I hope I have motivated the curious to go out and read a good Astronomy book on their own. Moreover, I am so ignorant of General Relativity and most of the fine points of Cosmology that I really have no business writing about either. Therefore I must content myself with a justification in terms of my ``unique point of view,'' whereby I excuse the following distortions. Astronomy Tricks of the Trade Parallax Spectroscopy ... Bang!

24. Kluwer Academic Publishers - General Relativity And Gravitation http://www.kluweronline.com/issn/0001-7701/contents

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25. Seven Dimensional (and Up) Einsteinian Hyperspherical Universe Updated material from the archived Cosmology Review site written in cooperation with UNC. A conceptualization in plain English of an eternal, dual, periodic universe model according to Special and general relativity. http://www.fm/7-sphere/

Seven Dimensional (and up) Einsteinian Hyperspherical Universe In Plain English (Auto translate via AltaVista by Samuel A. Cox, BS; MSEd. Where are those one or two orders of magnitude of mass necessary to give us the universe we observe? Why is the universe accelerating outward? Why is the early universe observed to be dominated by Black Holes? How is order created, conserved and preserved in the cosmos? Why can matter only exist on a microscopic singular foundation? These and many, many other observations and questions are answered by this quasi-static "Geometric Universe" model, in which the dimensional parameters of cosmology are logically adjusted to better fit the mathematical dualism of General Relativity. This site consists of descriptive material and informal, non technical discussion of the profound implications of Singularity, Duality and Periodicity in a General Relativity Cosmology Model based on ... hyperspherical space with seven large dimensions; two/ sphere, Schwarzschild geometry and a single process but periodic time dimension. The model features a discrete, massive quantum Planck Realm, dual 3-space "hemispheres" with submicroscopic, and macroscopic, (astronomical) singular/photonic antipodes, inverse mapping with cosmological time separation, a photon based frame of reference system- and "time reversal" without an inverse process! Palikir, Pohnpei; November 25, 1999; Site Constructed August 2, 2000

26. Kluwer Academic Publishers - General Relativity And Gravitation http://www.kluweronline.com/issn/0001-7701/current

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27. A Unified Field Theory A mathematical description of nature based on the geometry of SpaceTime. general relativity,Energy-Stress tensor, a set of current densities and Quantum mechanics for Spin 1 Bosons. Space-Time dimensions calculated and not put in by hand. http://homepage.ntlworld.com/peter.hickman1/

28. GRG Society Home Page The International Society on general relativity and Gravitation was formed in 1971 and is the successor to the International Committee on general relativity http://www.maths.qmw.ac.uk/grgsoc/

Welcome to the GRG Society Home Page! The International Society on General Relativity and Gravitation was formed in 1971 and is the successor to the International Committee on General Relativity and Gravitation. It is also Affiliated Commission 2 (AC.2) of the International Union of Pure and Applied Physics (IUPAP), and within IUPAP is one of the participants in its Particle and Nuclear Astrophysics and Gravitation International Committee (PANAGIC). We are grateful to the School of Mathematical Sciences Queen Mary, University of London, Mile End Road, London E1 4NS, UK, for housing this home page. The College is not responsible for its contents, but has general rules on content with which we aim to conform We have the following: List of officers and committee Information on the Society, for prospective new members [also in downloadable form (LaTeX) The Society's constitution [also in downloadable form (LateX) Information on the GR17 General Assembly and current ballot and information on the candidates Individual membership form [also in downloadable form(LateX) Corporate membership form [also in downloadable form(LateX) Instructions for payment of dues [also in downloadable form(LateX) The public `Hyperspace' service, sponsored by the Society

29. General Relativity Notes By Kristen Wecht general relativity Tutorials. by Kristen Wecht. I designed the following general relativity tutorials for beginning graduate students in general relativity. http://www.lehigh.edu/~kdw5/project/

General Relativity Tutorials Designed by a Graduate Student for Graduate Students by Kristen Wecht I designed the following general relativity tutorials for beginning graduate students in general relativity. My goal here is to fill in the missing steps between the equations in popular text books on the subject. How to Linearize Einstein's Field Equations (PDF format) How to Construct a Coordinate System That Simplifies the Linearized Field Equations (Work in progress) How to Make Physical Predictions Using the Simplified Linearized Field Equations (Work in progress) Questions or comments? email: Kristen Wecht

30. Lanczos Collection Site announces the availability of the Cornelius Lanczos Collected Published Papers with commentaries. Lanczos (18931974) was one of the twentieth century's most versatile and innovative physicists and mathematicians. His papers cover an array of disciplines including general relativity, quantum mechanics, scientific computation, applied mathematics and numerical analysis. http://www.physics.ncsu.edu/lanczos

Announcing the CORNELIUS LANCZOS COLLECTED PUBLISHED PAPERS WITH COMMENTARIES Published by North Carolina State University College of Physical and Mathematical Sciences and Department of Physics Raleigh, North Carolina 27695-8202 USA [1998] Library of Congress Catalog Card Number: 98-67928 ISBN (for the Collection of Volumes I-VI): 0-929493-01-X [See Web: www.physics.ncsu.edu/lanczos (View the Order Form Ordering Instructions Collection 24 September 2002) (All orders are now being shipped from Raleigh, North Carolina) Cornelius Lanczos (1893-1974) was a physicist and mathematician who had a profound impact on the foundations of twentieth century science. His papers cover a vast array of disciplines, including general relativity, quantum mechanics, scientific computation, applied mathematics and numerical analysis. This Collection provides documentation (a) that Lanczos was indeed one of the twentieth century's most versatile and innovative scientific minds, and (b) that many of Lanczos's ideas are still of interest to present-day research in physics and applied mathematics. This Collection will be of special interest to theoretical physicists, numerical analysts and science historians. The Cornelius Lanczos Collected Published Papers with Commentaries (Lanczos Collection or CLCPPC herein-after referred to as the Collection) represents the second phase of a two-part celebration of the life and work of Cornelius Lanczos. The first phase of this celebration occurred in December 1993 when North Carolina State University's College of Physical and Mathematical Sciences hosted the Cornelius Lanczos International Centenary Conference. [See the

31. General Relativity Made Simple Advanced Physics Made Simple. general relativity. Where general relativity is needed is in the presence of heavy objects or large amounts of energy. http://www.geocities.com/autotheist/Physics/gr.htm

Advanced Physics Made Simple General Relativity Introduced by Albert Einstein in 1915, this theory was developed to generalize the theory of special relativity . Contrary to the stories told by many high school physics teachers, special relativity does cover accelerating objects, but the math is difficult. Where general relativity is needed is in the presence of heavy objects or large amounts of energy. The physics of general relativity is very simple: MASS AND ENERGY CURVE SPACE AND TIME and Einstein gave the equation which actually determines the relationship. The rest of general relativity is based on the mathematics of curved surfaces. Tests of General Relativity The most exciting test of general relativity is the PERIHELION OF MERCURY. Since the middle ages, it has been observed that the planet mercury travels along an ellipse (a squashed circle), and that the orbit shifts a little each year. The observed movement was a rotation of about 42 degrees per year. According to general relativity, the shift is 43 degrees per year, which convinced the world the general relativity was a correct theory. Another test is the GRAVITATIONAL REDSHIFT. According to general relativity, light will change color as it gets closer to the surface of the Earth. When researchers carefully measured light at the top and bottom of a tall building, they found exactly the same result! Unfortunately it was later shown that the same effect occurs in quantum mechanics without using general relativity.

32. General Relativity And Quantum Cosmology general relativity and Quantum Cosmology (since 7/92). index to grqc titles/authors; get gr-qc/abstract; help. e-Prints are available for the following years http://arxiv.org/archive/gr-qc

General Relativity and Quantum Cosmology (since 7/92) index to gr-qc titles/authors get gr-qc/abstract help e-Prints are available for the following years: Additional: new gr-qc papers received (most recent mailing) recent gr-qc listings current month's gr-qc listings lastupdate of daily changes to gr-qc database (ftp format) some info for gr-qc Links to: arXiv gr-qc find abs

33. Being And Becoming In Modern Physics Discusses implications of general relativity for the philosophy of time; by Steven Savitt. http://plato.stanford.edu/entries/spacetime-bebecome/

version history HOW TO CITE THIS ENTRY Stanford Encyclopedia of Philosophy A B C D ... Z This document uses XHTML-1/Unicode to format the display. Older browsers and/or operating systems may not display the formatting correctly. last substantive content change JUL Being and Becoming in Modern Physics Does time flow or lapse or pass? Are the future or the past as real as the present? These metaphysical questions have been debated for more than two millennia, with no resolution in sight. Modern physics provides us, however, with tools that enable us to sharpen these old questions and generate new arguments. Does the special theory of relativity, for example, show that there is no passage or that the future is as real as the present? The focus of this entry will be these new questions and arguments. 1. Introduction 2. Newtonian Spacetime 2.1 Presentism, Possibilism, Eternalism 2.2 McTaggart's Argument ... Related Entries 1. Introduction Around 500 B. C. Heraclitus wrote the following: Everything flows and nothing abides; everything gives way and nothing stays fixed. You cannot step twice into the same river, for other waters and yet others, go flowing on.

34. Jorge Pullin Quantizing general relativity brings knot theory into quantum gravity. The Jones polynomial is shown to give rise to physical states of quantum gravity. Links to research papers by the author. http://www.phys.lsu.edu/faculty/pullin

Jorge Pullin Horace Hearne Chair in theoretical Physics, Louisiana State University Adjunct Professor of Physics, University of Utah Adjunct Professor of Physics, PennState Ph.D., Instituto Balseiro Honors and awards Phone/Fax: (225)578-0464 pullin@phys.lsu.edu Horace Hearne Institute for Theoretical Physics Want to hear those pipes? Research. ... Background. Research My research interests cover many aspects of gravitational physics, both classical and quantum mechanical. I am currently focusing on two topics: quantum gravity and black hole collisions . You can also get my complete publication list , but if you want to get the latest, go to the Hearne Institute page and click on publications. The explanations that follow are a bit longish, feel free to skip to the next topic if you get bored! Quantum gravity I collaborate with Rodolfo Gambini, of the University of the Republic in Montevideo, Uruguay, our collaboration has been going on since 1990. We coauthored a book "Loops, knots, gauge theories and quantum gravity" in 1996 and have published many papers together. We study the quantization of general relativity using canonical methods. There is a small community pursuing this kind of research, which is complementary to the mainstream approach to quantum gravity: string theory. String theorists believe that one cannot quantize general relativity because it is not a fundamental theory and one has to replace it with string theory in order to quantize it. General relativity will be an "effective" "low energy" theory.

35. General Relativity, Gravitation And Cosmology WWW Sites general relativity, Gravitation and Cosmology WWW sites. Australasia Australasian Society for general relativity and Gravitation; http://www.physics.adelaide.edu.au/itp/relativity.html

General Relativity, Gravitation and Cosmology WWW sites Australasia Australasian Society for General Relativity and Gravitation Adelaide Mathematical Physics Group ANU Gravity Research ANU Gravitational Wave Group , Canberra Australian Consortium for Interferometric Gravitational Astronomy - ACIGA Canberra University Numerical Relativity Group , School of Mathematics and Statistics Monash - General Relativity Group , Dept of Mathematics and Statistics Sydney Nonlinear Analysis Group , School of Mathematics and Statistics UWA Gravity Wave Group Asia University of Tokyo, Gravitational Wave Group Europe , Potsdam AURIGA gravitational wave detector , Legnaro National Laboratories, Italy Balearic Islands University, Mallorca Cardiff Relativity Group Cambridge, DAMTP Relativity Group Cambridge, Institute of Astronomy ... GRAIL gravitational wave detector , NIKHEF, Netherlands Freiburg, Gravity Imperial College, Theoretical Physics Group Astrophysics Group King's College, London: Mathematics Department Theoretical Physics Group Rome gravitational wave research group Loughborough Relativity Group Newcastle-Upon-Tyne, Nottingham - Mathematical Physics Division Oxford University

36. Center For Gravitational Wave Physics One of 2 general relativity Centers at Penn State University. This center is active with the LIGO Project. http://cgwp.gravity.psu.edu/

37. [gr-qc/9512024] Introduction To The Effective Field Theory Description Of Gravit This is a pedagogical introduction to the treatment of general relativity as a quantum effective field theory. http://arxiv.org/abs/gr-qc/9512024

General Relativity and Quantum Cosmology, abstract gr-qc/9512024 From: "John F. Donoghue" [ view email ] Date: Mon, 11 Dec 1995 15:28:08 -0500 (EST) (19kb) Introduction to the Effective Field Theory Description of Gravity Author: John F. Donoghue (Univ. of Massachusetts, Amherst) Comments: 26 pages, Latex, no figures, Lectures presented at the Advanced School on Effective Field Theories (Almunecar, Spain, June 1995), to be published in the proceedings Report-no: UMHEP-424 This is a pedagogical introduction to the treatment of general relativity as a quantum effective field theory. Gravity fits nicely into the effective field theory description and forms a good quantum theory at ordinary energies. Full-text: PostScript PDF , or Other formats References and citations for this submission: SLAC-SPIRES HEP (refers to , cited by , arXiv reformatted) Which authors of this paper are endorsers? Links to: arXiv gr-qc find abs

38. General Relativity And Quantum Cosmology xxx.lanl.gov/archive/grqc/ More results from xxx.lanl.gov general relativity - Wikipedia, the free encyclopediageneral relativity. From Wikipedia, the free encyclopedia. general relativity The vierbein formulation of general relativity. This is http://xxx.lanl.gov/archive/gr-qc

General Relativity and Quantum Cosmology (since 7/92) index to gr-qc titles/authors get gr-qc/abstract help e-Prints are available for the following years: Additional: new gr-qc papers received (most recent mailing) recent gr-qc listings current month's gr-qc listings lastupdate of daily changes to gr-qc database (ftp format) some info for gr-qc Links to: arXiv gr-qc find abs

39. Dr. Mendel Sachs On compatibility of the quantum theory and theory of general relativity by Dr. Mendel Sachs http://www.compukol.com/mendel/

The Future of Physics? My name is Mendel Sachs. My subject is theoretical physics. I have recently become aware of this excellent means of communicating ideas to my fellow physicists. I would like to ask your indulgence in some of my thoughts about physics today. I have discovered during my professional career that in order to increase our comprehension of the material world, it is necessary to ask significant questions and then try to answer them, as completely and rigorously as possible no matter how hard this may seem to be at the outset. A "significant question" to me is one whose answer could possibly increase our understanding. Of course, there is no guarantee at the outset that the question would turn out to be significant in the final analysis. On the other hand, it is often clear when a question (that a great deal of attention may be given to) is not significant! Let me start out, then, with some questions that I believe are significant, and then try to answer them, in my view. 1) What do we presently believe are the most fundamental assertions of the laws of nature? My answer is: The bases of the quantum theory and the theory of relativity. I am not referring here to mathematical expressions of these theories; I refer to the basic concepts that underlie these expressions. If you do not agree with this answer, or those to the questions below, please respond with your own views.

40. [gr-qc/9712019] Lecture Notes On General Relativity general relativity and Quantum Cosmology, abstract grqc/9712019. From Sean Carroll 277kb) Lecture Notes on general relativity. Authors Sean http://arxiv.org/abs/gr-qc/9712019

General Relativity and Quantum Cosmology, abstract gr-qc/9712019 From: Sean Carroll [ view email ] Date: Wed, 3 Dec 1997 02:39:44 GMT (277kb) Lecture Notes on General Relativity Authors: Sean M. Carroll Comments: 238 pages, numerous figures. Individual chapters, and potentially updated versions, can be found at this http URL Report-no: NSF-ITP/97-147 These notes represent approximately one semester's worth of lectures on introductory general relativity for beginning graduate students in physics. Topics include manifolds, Riemannian geometry, Einstein's equations, and three applications: gravitational radiation, black holes, and cosmology. Full-text: PostScript PDF , or Other formats References and citations for this submission: SLAC-SPIRES HEP (refers to , cited by , arXiv reformatted); CiteBase (autonomous citation navigation and analysis) Which authors of this paper are endorsers? Links to: arXiv gr-qc find abs

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