Gravitational Curvature

Author: Theodore Frankel
Publisher: Courier Corporation
ISBN: 9780486289151
Release Date: 2013-04-10
Genre: Science

This classic text and reference monograph applies modern differential geometry to general relativity. A brief mathematical introduction to gravitational curvature, it emphasizes the subject's geometric essence and stresses the global aspects of cosmology. Suitable for independent study as well as for courses in differential geometry, relativity, and cosmology. 1979 edition.

Quantum Gravity and Gravitational Waves

Author: Edited by Paul F. Kisak
Publisher: Createspace Independent Publishing Platform
ISBN: 1519665741
Release Date: 2015-12-07

Quantum gravity (QG) is a field of theoretical physics that seeks to describe the force of gravity according to the principles of quantum mechanics. The current understanding of gravity is based on Albert Einstein's general theory of relativity, which is formulated within the framework of classical physics. On the other hand, the nongravitational forces are described within the framework of quantum mechanics, a radically different formalism for describing physical phenomena based on probability. The necessity of a quantum mechanical description of gravity follows from the fact that one cannot consistently couple a classical system to a quantum one. In physics, gravitational waves are ripples in the curvature of space-time which propagate as waves, travelling outward from the source. Predicted in 1916 by Albert Einstein to exist on the basis of his theory of general relativity, gravitational waves theoretically transport energy as gravitational radiation. Sources of detectable gravitational waves could possibly include binary star systems composed of white dwarfs, neutron stars, or black holes. The existence of gravitational waves is a possible consequence of the Lorentz invariance of general relativity since it brings the concept of a limiting speed of propagation of the physical interactions with it. Gravitational waves cannot exist in the Newtonian theory of gravitation, in which physical interactions propagate at infinite speed. Although gravitational radiation has not been directly detected, there is indirect evidence for its existence. For example, the 1993 Nobel Prize in Physics was awarded for measurements of the Hulse-Taylor binary system which suggest that gravitational waves are more than theoretical concept. Various gravitational-wave detectors are currently under construction or are in operation, such as The Advanced LIGO which began observations in September 2015. This book discusses the current theories, concepts and experiments that pertain to quantum gravity and gravitational waves.

Relativity and Gravitation

Author: Jiří Bičák
Publisher: Springer
ISBN: 9783319067612
Release Date: 2014-06-06
Genre: Science

In early April 1911 Albert Einstein arrived in Prague to become full professor of theoretical physics at the German part of Charles University. It was there, for the first time, that he concentrated primarily on the problem of gravitation. Before he left Prague in July 1912 he had submitted the paper “Relativität und Gravitation: Erwiderung auf eine Bemerkung von M. Abraham” in which he remarkably anticipated what a future theory of gravity should look like. At the occasion of the Einstein-in-Prague centenary an international meeting was organized under a title inspired by Einstein's last paper from the Prague period: "Relativity and Gravitation, 100 Years after Einstein in Prague". The main topics of the conference included: classical relativity, numerical relativity, relativistic astrophysics and cosmology, quantum gravity, experimental aspects of gravitation and conceptual and historical issues. The conference attracted over 200 scientists from 31 countries, among them a number of leading experts in the field of general relativity and its applications. This volume includes abstracts of the plenary talks and full texts of contributed talks and articles based on the posters presented at the conference. These describe primarily original results of the authors. Full texts of the plenary talks are included in the volume "General Relativity, Cosmology and Astrophysics--Perspectives 100 Years after Einstein in Prague", eds. J. Bičák and T. Ledvinka, published also by Springer Verlag.

Black Holes Time Warps Einstein s Outrageous Legacy Commonwealth Fund Book Program

Author: Kip Thorne
Publisher: W. W. Norton & Company
ISBN: 9780393247473
Release Date: 1995-01-17
Genre: Science

Winner of the 2017 Nobel Prize in Physics Ever since Albert Einstein's general theory of relativity burst upon the world in 1915 some of the most brilliant minds of our century have sought to decipher the mysteries bequeathed by that theory, a legacy so unthinkable in some respects that even Einstein himself rejected them. Which of these bizarre phenomena, if any, can really exist in our universe? Black holes, down which anything can fall but from which nothing can return; wormholes, short spacewarps connecting regions of the cosmos; singularities, where space and time are so violently warped that time ceases to exist and space becomes a kind of foam; gravitational waves, which carry symphonic accounts of collisions of black holes billions of years ago; and time machines, for traveling backward and forward in time. Kip Thorne, along with fellow theorists Stephen Hawking and Roger Penrose, a cadre of Russians, and earlier scientists such as Oppenheimer, Wheeler and Chandrasekhar, has been in the thick of the quest to secure answers. In this masterfully written and brilliantly informed work of scientific history and explanation, Dr. Thorne, a Nobel Prize-winning physicist and the Feynman Professor of Theoretical Physics Emeritus at Caltech, leads his readers through an elegant, always human, tapestry of interlocking themes, coming finally to a uniquely informed answer to the great question: what principles control our universe and why do physicists think they know the things they think they know? Stephen Hawking's A Brief History of Time has been one of the greatest best-sellers in publishing history. Anyone who struggled with that book will find here a more slowly paced but equally mind-stretching experience, with the added fascination of a rich historical and human component. Winner of the Phi Beta Kappa Award in Science.


Author: Charles W. Misner
Publisher: Macmillan
ISBN: 0716703440
Release Date: 1973-09-15
Genre: Science

This landmark text offers a rigorous full-year graduate level course on gravitation physics, teaching students to: • Grasp the laws of physics in flat spacetime • Predict orders of magnitude • Calculate using the principal tools of modern geometry • Predict all levels of precision • Understand Einstein's geometric framework for physics • Explore applications, including pulsars and neutron stars, cosmology, the Schwarzschild geometry and gravitational collapse, and gravitational waves • Probe experimental tests of Einstein's theory • Tackle advanced topics such as superspace and quantum geometrodynamics The book offers a unique, alternating two-track pathway through the subject: • In many chapters, material focusing on basic physical ideas is designated as Track 1. These sections together make an appropriate one-term advanced/graduate level course (mathematical prerequisites: vector analysis and simple partial-differential equations). The book is printed to make it easy for readers to identify these sections. • The remaining Track 2 material provides a wealth of advanced topics instructors can draw from to flesh out a two-term course, with Track 1 sections serving as prerequisites.

Theory of Gravitational Interactions

Author: Maurizio Gasperini
Publisher: Springer
ISBN: 9783319496825
Release Date: 2016-11-25
Genre: Science

This is the second edition of a well-received book that is a modern, self-contained introduction to the theory of gravitational interactions. The new edition includes more details on gravitational waves of cosmological origin, the so-called brane world scenario, and gravitational time-delay effects.The first part of the book follows the traditional presentation of general relativity as a geometric theory of the macroscopic gravitational field, while the second, more advanced part discusses the deep analogies (and differences) between a geometric theory of gravity and the gauge theories of the other fundamental interactions. This fills a gap within the traditional approach to general relativity which usually leaves students puzzled about the role of gravity. The required notions of differential geometry are reduced to the minimum, allowing room for aspects of gravitational physics of current phenomenological and theoretical interest, such as the properties of gravitational waves, the gravitational interactions of spinors, and the supersymmetric and higher-dimensional generalization of the Einstein equations. This textbook is primarily intended for students pursuing a theoretical or astroparticle curriculum but is also relevant for PhD students and young researchers.

Gravitation and Inertia

Author: Ignazio Ciufolini
Publisher: Princeton University Press
ISBN: 0691033234
Release Date: 1995
Genre: Science

This book is on Einsteinś theory of general relativity, or geometrodynamic. It may be used as an introduction to general relativity, as an introduction to the foundations and tests of gravitation and geometrodynamics, or as a monograph on the meaning and origin of inertia in Eistein theory

Gravity Quasi Black Holes And Cosmic Relativity

Author: Bob Ticer
ISBN: 9781418400941
Release Date: 2004-07-01
Genre: Science

Prior to 20th century physics it was believed an ethereal medium pervaded all space. It was believed the ether is necessary to explain light as waves propagating through a medium. Physicists failed to confirm the ether really exists. Only indirect inference to wave properties can be made with regard to its possible existence. Otherwise it is invisible to our world. Ethereal physics has been abandoned. It has been replaced with a methodology whereby only what can be observed is considered real. All observable effects are mathematically related in the form of a functional theory. Much of theory is postulated, not explained. There is, for instance, no attempt to explain the probability nature of quantum mechanics. Only the results are considered pertinent to scientific investigation. However, with the historical foundation from which modern theory evolves, physicists are becoming confused. They believe, for instance, general relativity predicts black holes. There are no black holes. They are myths created from inconsistent interpretation of theory. This book goes beyond physics to explain the physics of gravity, the atomic structure and cosmology. It provides a historical perspective for understanding physics in a more consistent manner.

An Introduction to Relativistic Gravitation

Author: Remi Hakim
Publisher: Cambridge University Press
ISBN: 0521459303
Release Date: 1999-05-20
Genre: Science

This is an introductory textbook on applications of general relativity to astrophysics and cosmology. The aim is to provide graduate students with a toolkit for understanding astronomical phenomena that involve velocities close to that of light or intense gravitational fields. The approach taken is first to give the reader a thorough grounding in special relativity, with space-time the central concept, following which general relativity presents few conceptual difficulties. Examples of relativistic gravitation in action are drawn from the astrophysical domain. The book can be read on two levels: first as an introductory fast-track course, and then as a detailed course reinforced by problems which illuminate technical examples. The book has extensive links to the literature of relativistic astrophysics and cosmology.

Curvature Cosmology

Author: David F. Crawford
Publisher: Universal-Publishers
ISBN: 9781599424132
Release Date: 2006
Genre: Philosophy

Curvature Cosmology proposes a new cosmological model very different from, and more elegant than, the Big-Bang Theory. Curvature Cosmology is based on two major hypotheses that Hubble redshift is due to an interaction of photons with curved spacetime and that there is a pressure that acts to stabilise expansion and provides a static stable universe. The main focus of this book is to describe these two hypotheses in detail and to examine all relevant cosmological data in the context of this new model of the universe. This model proposes that, though evolution of stars and galaxies is evident, the statistical properties of the universe are the same at all places and at all times. In short, the universe is ageless, has no defined beginning (unlike the Big-Bang model), and carries no evidence of expansion, despite the changeability of its components. Curvature Cosmology is a complex book that calls for a paradigm shift in current cosmology and requires at least basic (if not more complex) knowledge of past and current cosmological models and equations.

Singularity Theory and Gravitational Lensing

Author: Arlie O. Petters
Publisher: Springer Science & Business Media
ISBN: 0817636684
Release Date: 2001-06-15
Genre: Mathematics

This monograph is the first to develop a mathematical theory of gravitational lensing. The theory applies to any finite number of deflector planes and highlights the distinctions between single and multiple plane lensing. Introductory material in Parts I and II present historical highlights and the astrophysical aspects of the subject. Part III employs the ideas and results of singularity theory to put gravitational lensing on a rigorous mathematical foundation.

Branes of Gravity

Author: H.C. Huang
Publisher: Xlibris Corporation
ISBN: 1456805045
Release Date: 2011-01-07
Genre: Science

Branes of Gravity: The Structure of Gravitational Force, a new title by H. C. Huang, builds on the author’s earlier volume, A Simple Unified Theory: From Magnetism to Gravity. The author disagrees with some of the current beliefs in theoretical physics. For example, it is commonly believed that a perpetual machine is impossible. But this author thinks that our entire universe, galaxies, solar systems, and atoms are all, in effect, perpetual machines, whose motion still energizes everything we can sense. Based on the synthesis of discoveries in this book and the previous volume—covering such topics as how gravity and inertia differ, the Moon-Earth relationship, and applications of the neutral charge field—Huang discusses their implications for re-evaluating the structure and future understanding of physical nature and phenomena of particle universes.

Non minimal Higgs Inflation and Frame Dependence in Cosmology

Author: Christian Friedrich Steinwachs
Publisher: Springer Science & Business Media
ISBN: 9783319018423
Release Date: 2013-10-30
Genre: Science

This thesis explores the idea that the Higgs boson of the Standard Model and the cosmological inflation are just two manifestations of one and the same scalar field - the Higgs-inflation. By this unification two energy scales that are separated by many orders of magnitude are connected, thereby building a bridge between particle physics and cosmology. An essential ingredient for making this model consistent with observational data is a strong non-minimal coupling to gravity. Predictions for the value of the Higgs mass as well as for cosmological parameters are derived, and can be tested by future experiments. The results become especially exciting in the light of the recently announced discovery of the Higgs boson. The model of non-minimal Higgs inflation is also used in a quantum cosmological context to predict initial conditions for inflation. These results can in turn be tested by the detection of primordial gravitational waves. The presentation includes all introductory material about cosmology and the Standard Model that is essential for the further understanding. It also provides an introduction to the mathematical methods used to calculate the effective action by heat kernel methods.