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The Cosmological Singularity
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Book Synopsis The Cosmological Singularity by : Vladimir Belinski
Download or read book The Cosmological Singularity written by Vladimir Belinski and published by Cambridge University Press. This book was released on 2017-10-26 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book mathematically derives the theory underlying the Belinski-Khalatnikov-Lifshitz conjecture on the general solution of the Einstein equations with a cosmological singularity.
Book Synopsis Gravitational Collapse and Spacetime Singularities by : Pankaj S. Joshi
Download or read book Gravitational Collapse and Spacetime Singularities written by Pankaj S. Joshi and published by Cambridge University Press. This book was released on 2007-12-13 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physical phenomena in astrophysics and cosmology involve gravitational collapse in a fundamental way. The final fate of a massive star when it collapses under its own gravity at the end of its life cycle is one of the most important questions in gravitation theory and relativistic astrophysics, and is the foundation of black hole physics. General relativity predicts that continual gravitational collapse gives rise to a space-time singularity. Quantum gravity may take over in such regimes to resolve the classical space-time singularity. This book, first published in 2007, investigates these issues, and shows how the visible ultra-dense regions arise naturally and generically as an outcome of dynamical gravitational collapse. It will be of interest to graduate students and academic researchers in gravitation physics, fundamental physics, astrophysics, and cosmology. It includes a detailed review of research into gravitational collapse, and several examples of collapse models are investigated in detail.
Book Synopsis Internal Structure of Black Holes and Spacetime Singularities by : Lior M. Burko
Download or read book Internal Structure of Black Holes and Spacetime Singularities written by Lior M. Burko and published by Institute of Physics Publishing (GB). This book was released on 1997 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: The physics of black holes and spacetime singularities is now a well established area of research in gravitation theory. Over recent years researchers have begun to study the internal structure of black holes and spacetime singularities. This book is primarily the proceedings of a workshop devoted to the subject. The chapters are mainly written versions of the talks given at the workshop. However, the authors have written extended introductions to their contributions, so that a reader, well versed in gravitation theory, but unaware of the current research in this subfield, should be able to follow the text Several topics are considered by more than one author, bringing into the text different viewpoints on these topics. As a result, this book is suitable for graduate students who wish to familiarize themselves with the various aspects of the structure of black holes, and for researchers who wish to learn about advances in subfields other than their own. Topics covered include: the nature of thesingularities (both null and spacelike) and the spacetime inside black holes coupled to various matter fields in classical and semiclassical gravity, as well as in alternative gravity theories; the cosmic censorship hypothesis and its connection to black hole interiors; cosmological singularities and their relation with black hole singularities; and black hole entropy and evaporation.
Book Synopsis The Singular Universe and the Reality of Time by : Roberto Mangabeira Unger
Download or read book The Singular Universe and the Reality of Time written by Roberto Mangabeira Unger and published by Cambridge University Press. This book was released on 2014-12-08 with total page 567 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cosmology is in crisis. The more we discover, the more puzzling the universe appears to be. How and why are the laws of nature what they are? A philosopher and a physicist, world-renowned for their radical ideas in their fields, argue for a revolution. To keep cosmology scientific, we must replace the old view in which the universe is governed by immutable laws by a new one in which laws evolve. Then we can hope to explain them. The revolution that Roberto Mangabeira Unger and Lee Smolin propose relies on three central ideas. There is only one universe at a time. Time is real: everything in the structure and regularities of nature changes sooner or later. Mathematics, which has trouble with time, is not the oracle of nature and the prophet of science; it is simply a tool with great power and immense limitations. The argument is readily accessible to non-scientists as well as to the physicists and cosmologists whom it challenges.
Book Synopsis The singularities as ontological limits of the general relativity by : Nicolae Sfetcu
Download or read book The singularities as ontological limits of the general relativity written by Nicolae Sfetcu and published by Nicolae Sfetcu. This book was released on 2019-01-31 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: ESSAYS Collection The singularities from the general relativity resulting by solving Einstein's equations were and still are the subject of many scientific debates: Are there singularities in spacetime, or not? Big Bang was an initial singularity? If singularities exist, what is their ontology? Is the general theory of relativity a theory that has shown its limits in this case? In this essay I argue that there are singularities, and the general theory of relativity, as any other scientific theory at present, is not valid for singularities. But that does not mean, as some scientists think, that it must be regarded as being obsolete. After a brief presentation of the specific aspects of Newtonian classical theory and the special theory of relativity, and a brief presentation of the general theory of relativity, the chapter Ontology of General Relativity presents the ontological aspects of general relativity. The next chapter, Singularities, is dedicated to the presentation of the singularities resulting in general relativity, the specific aspects of the black holes and the event horizon, including the Big Bang debate as original singularity, and arguments for the existence of the singularities. In Singularity Ontology, I am talking about the possibilities of ontological framing of singularities in general and black holes in particular, about the hole argument highlighted by Einstein, and the arguments presented by scientists that there are no singularities and therefore that the general theory of relativity is in deadlock. In Conclusions I outline and summarize briefly the arguments that support my above views. CONTENTS Abstract Introduction Classical Theory and Special Relativity General Relativity (GR) 1 Ontology of General Relativity 2 Singularities Black Holes Event Horizon Big Bang Are there Singularities? 3 Ontology of Singularities Ontology of black holes The hole argument There are no singularities Conclusions Notes Bibliography
Book Synopsis The Universe Before the Big Bang by : Maurizio Gasperini
Download or read book The Universe Before the Big Bang written by Maurizio Gasperini and published by Springer Science & Business Media. This book was released on 2008-10-08 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Terms such as "expanding Universe", "big bang", and "initial singularity", are nowadays part of our common language. The idea that the Universe we observe today originated from an enormous explosion (big bang) is now well known and widely accepted, at all levels, in modern popular culture. But what happens to the Universe before the big bang? And would it make any sense at all to ask such a question? In fact, recent progress in theoretical physics, and in particular in String Theory, suggests answers to the above questions, providing us with mathematical tools able in principle to reconstruct the history of the Universe even for times before the big bang. In the emerging cosmological scenario the Universe, at the epoch of the big bang, instead of being a "new born baby" was actually a rather "aged" creature in the middle of its possibly infinitely enduring evolution. The aim of this book is to convey this picture in non-technical language accessibile also to non-specialists. The author, himself a leading cosmologist, draws attention to ongoing and future observations that might reveal relics of an era before the big bang.
Book Synopsis Singularity Theory and Gravitational Lensing by : Arlie O. Petters
Download or read book Singularity Theory and Gravitational Lensing written by Arlie O. Petters and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis The Cosmology of Extra Dimensions and Varying Fundamental Constants by : Carlos Martins
Download or read book The Cosmology of Extra Dimensions and Varying Fundamental Constants written by Carlos Martins and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: The workshop on The Cosmology of Extra Dimensions and Varying Fundamental Constants, which was part of JENAM 2002, was held at the Physics Department of the University of Porto (FCUP) from the 3rd to the 5th of September 2002. It was regularly attended by about 110 participants, of which 65 were officially registered in the VFC workshop, while the others came from the rest of the JENAM workshops. There were also a few science correspondents from the national and international press. During the 3 days of the scientific programme, 8 Invited Reviews and 30 Oral Communications were presented. The speakers came from 11 different European countries, and also from Argentina, Australia, Canada, Japan and the U.S.A. There were also speakers from six Portuguese research institutions, and nine of the speak ers were Ph.D. students. The contributions are presented in these proceedings in chronological order. The workshop brought together string theorists, particle physicists, theoretical and observational cosmologists, relativists and observational astrophysicists. It was generally agreed that this inter-disciplinarity was the greatest strength of the work shop, since it provided people coming into this very recent topic from the various different backgrounds with an opportunity to understand each other's language and thereby gain a more solid understanding of the overall picture.
Download or read book Primordial Cosmology written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Analysis of Space-Time Singularities by : C. J. S. Clarke
Download or read book The Analysis of Space-Time Singularities written by C. J. S. Clarke and published by Cambridge University Press. This book was released on 1993 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: The different possible singularities are defined and the mathematical methods needed to extend the space-time are described in detail in this book. Results obtained (many appearing here for the first time) show that singularities are associated with a lack of smoothness in the Riemann tensor.
Book Synopsis The Singular Universe and the Reality of Time by : Roberto Mangabeira Unger
Download or read book The Singular Universe and the Reality of Time written by Roberto Mangabeira Unger and published by Cambridge University Press. This book was released on 2015 with total page 567 pages. Available in PDF, EPUB and Kindle. Book excerpt: Roberto Mangabeira Unger and Lee Smolin argue for a revolution in our cosmological ideas. Ideal for non-scientists, physicists and cosmologists.
Book Synopsis Primordial Cosmology by : Giovanni Montani
Download or read book Primordial Cosmology written by Giovanni Montani and published by World Scientific. This book was released on 2011 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: Primordial Cosmology deals with one of the most puzzling and fascinating topics debated in modern physics - the nature of the Big Bang singularity. The authors provide a self-consistent and complete treatment of the very early Universe dynamics, passing through a concise discussion of the Standard Cosmological Model, a precise characterization of the role played by the theory of inflation, up to a detailed analysis of the anisotropic and inhomogeneous cosmological models. The most peculiar feature of this book is its uniqueness in treating advanced topics of quantum cosmology with a well-traced link to more canonical and pedagogical notions of fundamental cosmology. This book traces clearly the backward temporal evolution of the Universe, starting with the Robertsonndash;Walker geometry and ending with the recent results of loop quantum cosmology in view of the Big Bounce. The reader is accompanied in this journey by an initial technical presentation which, thanks to the fundamental tools given earlier in the book, never seems heavy or obscure.
Book Synopsis Naked Singularity by : DreamingBear Baraka Kanaan
Download or read book Naked Singularity written by DreamingBear Baraka Kanaan and published by iUniverse. This book was released on 2011-09-29 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: In general relativity, a naked singularity is a gravitational singularity, without an event horizon. In a black hole, there is a region around the singularity, the event horizon, where the gravitational force of the singularity is strong enough so that light cannot escape. Hence, the singularity cannot be directly observed. A naked singularity, by contrast, is observable from the outside. The theoretical existence of naked singularities is important because their existence would mean that it would be possible to observe the collapse of an object to infinite density. It would also cause foundational problems for general relativity, because in the presence of a naked singularity, general relativity cannot make predictions about the future evolution of spacetime. Some research has suggested that if loop quantum gravity is correct, then naked singularities could exist in nature, implying that the cosmic censorship hypothesis does not hold. Numerical calculations and some other arguments have also hinted at this possibility. To this date, no naked singularities (and no event horizons) have been observed.
Book Synopsis String Theory and Cosmology by : U Danielsson
Download or read book String Theory and Cosmology written by U Danielsson and published by World Scientific. This book was released on 2005-08-02 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Nobel Symposium in 2003 on String Theory and Cosmology was a gathering of many of the most active and distinguished scientists in the world, including Stephen Hawking, 2004 Nobel Prize winner David Gross, and Andrei Linde. The experts, comprising both theoreticians and experimentalists, were given the opportunity to discuss the present status of their respective subjects. Throughout the symposium, special attention was given to the connections between the fields: the questions posed ranged from ”Can cosmology be used to test string theory?” to ”Can string theory answer deep questions about cosmology?” The symposium marked a new era in the understanding of the science of the very small and the very large. This book is a unique document that reflects upon the state of fundamental physics at a historically important moment in time. Contents:Supernovae and Dark Energy (J L Tonry)Studying Dark Energy with Supernovae: Now, Soon, and the Not-Too-Distant Future (S Perlmutter)What Have We Learned from Cosmic Microwave Background Fluctuations? (D N Spergel)Quintessential Ideas (P J Steinhardt)Prospects of Inflation (A Linde)A Non Singular Universe (S Hawking)Unconventional Scenarios and Perturbations Therein (G Veneziano)Holographic Cosmology 3.0 (T Banks & W Fischler)Bouncing Universes in String Theory? (J Polchinski)Remarks on Tachyon Driven Cosmology (A Sen)Beyond Inflation: A Cyclic Universe Scenario (N Turok & P J Steinhardt)Creating Naked Singularities and Negative Energy (G T Horowitz)Filtering Gravity: Modification at Large Distances? (G Dvali)Cosmological Singularities in String Theory (D Kutasov)Where Do We Stand in Fundamental (String) Theory (D J Gross) Readership: Scientists in the fields of particle physics, string theory, cosmology and astronomy. Keywords:String Theory;Cosmology;Inflation;Dark Matter;Dark Energy;Big BangKey Features:A unique synthesis of the way cosmologists and string theorists view the origins of our universeA historical document representing a decisive moment in the history of cosmologyIncludes contributions from many of the most prominent astronomers and physicists in the world
Book Synopsis Bell's Theorem, Quantum Theory and Conceptions of the Universe by : Menas Kafatos
Download or read book Bell's Theorem, Quantum Theory and Conceptions of the Universe written by Menas Kafatos and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bell's Theorem and its associated implications for the nature of the physical world remain topics of great interest. For this reason many meetings have been recently held on the interpretation of quantum theory and the implications of Bell's Theorem. Generally these meetings have been held primarily for quantum physicists and philosophers of science who have been or are actively working on the topic. Nevertheless, other philosophers of science, mathematicians, engineers as well as members of the general public have increasingly taken interest in Bell's Theorem and its implications. The Fall Workshop held at George Mason University on October 21 and 22, 1988 and titled "Bell's Theorem, Quantum Theory and Conceptions of the Universe" was of a more general scope. Not only it attracted experts in the field, it also covered other topics such as the implications of quantum non-locality for the nature of consciousness, cosmology, the anthropic principle, etc. topics usually not covered in previous meetings of this kind. The meeting was attended by more than one hundred ten specialists and other interested people from all over the world. The purpose of the meeting was not to provide a definitive answer to the general questions raised by Bell's Theorem. It is likely that the debate will go on for quite a long time. Rather, it was meant to contribute to the important dialogue between different disciplines.
Book Synopsis Es wird den sämtlichen Brauern, Kaufleuten, Gewandschneidern und Krämern samt und sonders, hieneben im Abdruck communiciret ... by : Kaufleute
Download or read book Es wird den sämtlichen Brauern, Kaufleuten, Gewandschneidern und Krämern samt und sonders, hieneben im Abdruck communiciret ... written by Kaufleute and published by . This book was released on 1766 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Perspectives On High Energy Physics And Cosmology - Proceedings Of The Conference by : Antonio Gonzalez-arroyo
Download or read book Perspectives On High Energy Physics And Cosmology - Proceedings Of The Conference written by Antonio Gonzalez-arroyo and published by World Scientific. This book was released on 1994-02-04 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: This meeting gathered nine of the world's leading experts in high energy physics and cosmology. The speakers put forward their ideas about the present status and future of some important aspect of their field of research. Some of the talks are sufficiently general and free of technicality to be accessible to a wide audience.
