Aspects Of Gravitational Interaction PDF Download
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Author | : S. K. Srivastava |
Publisher | : Nova Biomedical Books |
Total Pages | : 246 |
Release | : 1998 |
Genre | : Science |
ISBN | : |
Download Aspects of Gravitational Interaction Book in PDF, ePub and Kindle
The twentieth century has brought enormous changes in the physicist's understanding of the fundamental nature of the physical world. These changes were ushered in the century's first decade, with the advent of relativity and quantum theory. With advancing knowledge, the mystery surrounding the ultimate nature of the physical world has deepened, not lessened, and the search for the Holy Grail of a 'Grand Unified Theory' or 'Theory of Everything' continues. This book reveals, in considerable detail, the concepts that have arisen as a result of that search -- the 'state of art'. Contents: Introduction to the Theory of Manifolds; Tensors and Riemannian; Einstein's theory of gravity; Some important modifications of Einstein's theory of gravity; Interaction of quantum fields with classical gravity; Gauge theory of gravity; Kaluza-Kleii Theory.
Author | : Maurizio Gasperini |
Publisher | : Springer |
Total Pages | : 380 |
Release | : 2016-11-25 |
Genre | : Science |
ISBN | : 3319496824 |
Download Theory of Gravitational Interactions Book in PDF, ePub and Kindle
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.
Author | : Pankaj S. Joshi |
Publisher | : Oxford University Press, USA |
Total Pages | : 400 |
Release | : 1993 |
Genre | : Philosophy |
ISBN | : |
Download Global Aspects in Gravitation and Cosmology Book in PDF, ePub and Kindle
This book describes several basic results and applications of global aspects in gravitation theory and cosmology within the framework of Einstein's theory of gravity. Topics include results on the structure and topology of space-time, exact solutions to Einstein equations and singularities, the status of quantum gravity, and quantum effects near space-time singularities in strong curvature fields. Also covered are the global upper limits in cosmology on elementary particle masses which might constitute the dark matter of the universe. After discussing in detail the fundamental role played by global considerations in gravity and general relativity, the author points out the significant problems that remain: the nature and structure of space-time singularities, the cosmic censorship problem in black hole physics, and the issue of quantum effects in strong gravity fields. The author's treatment of gravitational collapse illustrates how powerfully-strong curvature naked singularities could result from the continual gravitational collapse of matter with several reasonable equations of state--including inflowing radiation, dust, or a perfect fluid. Students and mathematicians, astrophysicists, and physicists will find this theoretically rich book a landmark in relativity theory.
Author | : Shohreh Rahmati |
Publisher | : |
Total Pages | : 0 |
Release | : 2017 |
Genre | : Cosmology |
ISBN | : |
Download Aspects of Modified Gravity Book in PDF, ePub and Kindle
To date, General Relativity provides the best description of the gravitational interaction. It can accurately describe the motion of the planets within the solar system. However, on large scales general relativity is unable to explain the accelerating expansion of the Universe. Furthermore, so far, no complete self-consistent quantum theory of gravity based on General Relativity has been constructed. This has motivated physicists to explore alternative theories of gravity. In this thesis, I explore three different problems confronting gravitational physics. First, I explore a gauge theory of gravity. In these models one has to choose a gauge group and localize its global symmetries. In this thesis I consider a Yang-Mills gauge gravity of the conformal group SO(4,2). This work was done in collaboration with J. Gegenberg and S. Seahra. In the thesis, I show the derivation of the equations of motion and investigate the cosmological solutions in the case that the matter content of the Universe is a mixture of dust and radiation. Our model predicts a big bounce in the early Universe followed by a period of nearly exponential slow roll inflation that can last long enough to explain the large scale homogeneity of the cosmic microwave background. Furthermore, our model incorporates a de Sitter-like accelerating phase in the late Universe that agrees with observations. Second, I explore a toy model of gravity. This work is in collaboration with V. Husain and J. Ziprick. General relativity in four-dimensional spacetime is a complicated theory to quantize. Therefore, it is useful to study simpler models. Einstein gravity in three dimensions has been a subject of much study, especially for the purpose of quantization. However, there are no local propagating degrees of freedom in three dimensions. It is fruitful to study three-dimensional gravitational theories with local field degrees of freedom. I consider here a method for obtaining local degrees of freedom: three dimensional general relativity coupled to a pressureless “dust”. The dust time gauge is imposed with the upshot that the gravitational part of the Hamiltonian constraint becomes the physical Hamiltonian. This yields an extra degree of freedom in the metric field. In the thesis, I examine the action in canonical form and derive the evolution equations for the spatial metric and its conjugate momentum. Linearizing the equations about the flat background and imposing the transverse (or traceless) gauges indicates that the extra degree of freedom in the metric is a scalar mode and is ultralocal. Finally, I examine parametric resonance in cosmology, in collaboration with S. Seahra. According to dynamical dark energy models or theories of quantum gravity, it can be possible that kinetic terms appearing in matter actions get modified at high or low energies. The modification of the matter kinetic term can directly influence the parametric resonance and therefore the preheating phase near the end of inflation. Preheating is a process required to reheat the universe and create elementary particles. To incorporate exotic kinetic terms into this scenario, one can modify the action of the inflaton, the reheaton, or both. In the last part of this thesis, I study the effects of nonstandard kinetic terms from several different models on resonant preheating.
Author | : Vesselin Petkov |
Publisher | : Minkowski Institute Press |
Total Pages | : 150 |
Release | : 2012-12-18 |
Genre | : Inertia (Mechanics) |
ISBN | : 098798716X |
Download Inertia and Gravitation Book in PDF, ePub and Kindle
This book fills a gap in the literature. So far there has been no book which deals with inertia and gravitation by explicitly addressing open questions and issues which have been hampering the proper understanding of these phenomena. The book places a strong emphasis on the physical understanding of the main aspects and features of inertia and gravitation. It discusses questions such as: Are inertial forces fictitious or real? Does Minkowski's four-dimensional formulation of special relativity provide an insight into the origin of inertia? Does mass increase relativistically? Why is the inertial mass equivalent to the gravitational mass? Are gravitational phenomena caused by gravitational interaction according to general relativity? Is there gravitational energy? Do gravitational waves carry gravitational energy? Can gravity be quantized?
Author | : Jong-Ping Hsu |
Publisher | : World Scientific |
Total Pages | : 664 |
Release | : 2005 |
Genre | : Science |
ISBN | : 9812703403 |
Download 100 Years of Gravity and Accelerated Frames Book in PDF, ePub and Kindle
This collection of papers presents ideas and problems arising over the past 100 years regarding classical and quantum gravity, gauge theories of gravity, and spacetime transformations of accelerated frames. Both Einstein''s theory of gravity and the YangOCoMills theory are gauge invariant. The invariance principles in physics have transcended both kinetic and dynamic properties and are at the very heart of our understanding of the physical world. In this spirit, this book attempts to survey the development of various formulations for gravitational and YangOCoMills fields and spacetime transformations of accelerated frames, and to reveal their associated problems and limitations. The aim is to present some of the leading ideas and problems discussed by physicists and mathematicians. We highlight three aspects: formulations of gravity as a YangOCoMills field, first discussed by Utiyama; problems of gravitational theory, discussed by Feynman, Dyson and others; spacetime properties and the physics of fields and particles in accelerated frames of reference. These unfulfilled aspects of Einstein and YangOCoMills'' profound thoughts present a great challenge to physicists and mathematicians in the 21st century."
Author | : Jayant Vishnu Narlikar |
Publisher | : Cambridge University Press |
Total Pages | : 236 |
Release | : 1996-10-03 |
Genre | : Science |
ISBN | : 9780521565653 |
Download The Lighter Side of Gravity Book in PDF, ePub and Kindle
Gravity is the most enigmatic of all known basic forces in nature. Yet it controls everything from the motion of ocean tides to the expansion of the entire Universe. Many books use technical jargon and high-powered maths to explain what gravity is all about. In The Lighter Side of Gravity, the presentation is beautifully clear and completely non-technical. Familiar analogies, interesting anecdotes and numerous illustrations are used throughout to get across subtle effects and difficult points. The coverage is, however, comprehensive and makes no compromise with accuracy. This second edition has been brought completely up to date and expanded to include the discovery of gigantic gravitational lenses in space, the findings of the COBE satellite, the detection of MACHOS, the investigations of the very early Universe and other new ideas in cosmology. In short, this lucid and stimulating book presents 'the lighter side' of the intriguing phenomena of 'gravity' to the student and general reader.
Author | : Venzo De Sabbata |
Publisher | : World Scientific |
Total Pages | : 327 |
Release | : 1994-08-31 |
Genre | : Science |
ISBN | : 9814501980 |
Download Spin And Torsion In Gravitation Book in PDF, ePub and Kindle
This book gives an exposition of both the old and new results of spin and torsion effects on gravitational interactions with implications for particle physics, cosmology etc. Physical aspects are stressed and measurable effects in relation to other areas of physics are discussed.Among the topics discussed are: alternative ways of unifying gravity with electroweak and strong interactions by an energy dependent spin torsion coupling constant; the idea that all interactions can be understood as originating from spin curvature coupling; the possibility of cosmological models with torsion providing a solution to the cosmological constant problem; and a demonstration that torsion can lead directly to the quantization of space-time itself.
Author | : P. D. D'Eath |
Publisher | : |
Total Pages | : 310 |
Release | : 1996 |
Genre | : Mathematics |
ISBN | : |
Download Black Holes Book in PDF, ePub and Kindle
Black Holes are regions of space-time where the gravitational field is so strong that not even light can escape. There has been much written on black holes, however in most cases they are treated as isolated objects. The author has found a number of cases in which the interaction of a black hole with another strong-field system (such as the background universe or another black hole) could be treated analytically. This includes using the powerful method of matched asymptotic expansions. In this book the author considers these wider ranging problems and examples for the first time. This book will be widely read by all those working in gravitation, and PhD students in mathematical physics.
Author | : M Blagojevic |
Publisher | : CRC Press |
Total Pages | : 522 |
Release | : 2001-10-25 |
Genre | : Science |
ISBN | : 142003426X |
Download Gravitation and Gauge Symmetries Book in PDF, ePub and Kindle
In the course of the development of electromagnetic, weak and strong interactions, the concept of (internal) gauge invariance grew up and established itself as an unavoidable dynamical principle in particle physics. It is less known that the principle of equivalence, and the basic dynamical properties of the gravitational interaction can also be ex