Gravity And The Quantum

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Gravity and the Quantum

Jasjeet Singh Bagla,Sunu Engineer
Gravity and the Quantum Book PDF

Author : Jasjeet Singh Bagla,Sunu Engineer
Publisher : Springer
Page : 494 pages
File Size : 42,9 Mb
Release : 2017-02-23
Category : Science
ISBN : 9783319517001

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Gravity and the Quantum by Jasjeet Singh Bagla,Sunu Engineer Pdf

This book provides a compilation of in-depth articles and reviews on key topics within gravitation, cosmology and related issues. It is a celebratory volume dedicated to Prof. Thanu Padmanabhan ("Paddy"), the renowned relativist and cosmologist from IUCAA, India, on the occasion of his 60th birthday. The authors, many of them leaders of their fields, are all colleagues, collaborators and former students of Paddy, who have worked with him over a research career spanning more than four decades. Paddy is a scientist of diverse interests, who attaches great importance to teaching. With this in mind, the aim of this compilation is to provide an accessible pedagogic introduction to, and overview of, various important topics in cosmology, gravitation and astrophysics. As such it will be an invaluable resource for scientists, graduate students and also advanced undergraduates seeking to broaden their horizons.

Quantum Gravity and Quantum Cosmology

Gianluca Calcagni,Lefteris Papantonopoulos,George Siopsis,Nikos Tsamis
Quantum Gravity and Quantum Cosmology Book PDF

Author : Gianluca Calcagni,Lefteris Papantonopoulos,George Siopsis,Nikos Tsamis
Publisher : Springer
Page : 402 pages
File Size : 44,9 Mb
Release : 2012-10-31
Category : Science
ISBN : 9783642330360

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Quantum Gravity and Quantum Cosmology by Gianluca Calcagni,Lefteris Papantonopoulos,George Siopsis,Nikos Tsamis Pdf

Quantum gravity has developed into a fast-growing subject in physics and it is expected that probing the high-energy and high-curvature regimes of gravitating systems will shed some light on how to eventually achieve an ultraviolet complete quantum theory of gravity. Such a theory would provide the much needed information about fundamental problems of classical gravity, such as the initial big-bang singularity, the cosmological constant problem, Planck scale physics and the early-time inflationary evolution of our Universe. While in the first part of this book concepts of quantum gravity are introduced and approached from different angles, the second part discusses these theories in connection with cosmological models and observations, thereby exploring which types of signatures of modern and mathematically rigorous frameworks can be detected by experiments. The third and final part briefly reviews the observational status of dark matter and dark energy, and introduces alternative cosmological models. Edited and authored by leading researchers in the field and cast into the form of a multi-author textbook at postgraduate level, this volume will be of benefit to all postgraduate students and newcomers from neighboring disciplines wishing to find a comprehensive guide for their future research.

Quantum Field Theory and Gravity

Felix Finster,Olaf Müller,Marc Nardmann,Jürgen Tolksdorf,Eberhard Zeidler
Quantum Field Theory and Gravity Book PDF

Author : Felix Finster,Olaf Müller,Marc Nardmann,Jürgen Tolksdorf,Eberhard Zeidler
Publisher : Springer Science & Business Media
Page : 382 pages
File Size : 51,8 Mb
Release : 2012-02-08
Category : Mathematics
ISBN : 9783034800433

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Quantum Field Theory and Gravity by Felix Finster,Olaf Müller,Marc Nardmann,Jürgen Tolksdorf,Eberhard Zeidler Pdf

One of the most challenging problems of contemporary theoretical physics is the mathematically rigorous construction of a theory which describes gravitation and the other fundamental physical interactions within a common framework. The physical ideas which grew from attempts to develop such a theory require highly advanced mathematical methods and radically new physical concepts. This book presents different approaches to a rigorous unified description of quantum fields and gravity. It contains a carefully selected cross-section of lively discussions which took place in autumn 2010 at the fifth conference "Quantum field theory and gravity - Conceptual and mathematical advances in the search for a unified framework" in Regensburg, Germany. In the tradition of the other proceedings covering this series of conferences, a special feature of this book is the exposition of a wide variety of approaches, with the intention to facilitate a comparison. The book is mainly addressed to mathematicians and physicists who are interested in fundamental questions of mathematical physics. It allows the reader to obtain a broad and up-to-date overview of a fascinating active research area.

Quantum Mechanics and Gravity

Mendel Sachs
Quantum Mechanics and Gravity Book PDF

Author : Mendel Sachs
Publisher : Springer Science & Business Media
Page : 200 pages
File Size : 46,5 Mb
Release : 2013-06-29
Category : Science
ISBN : 9783662096406

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Quantum Mechanics and Gravity by Mendel Sachs Pdf

This book describes a paradigm change in modern physics from the philosophy and mathematical expression of the quantum theory to those of general relativity. The approach applies to all domains - from elementary particles to cosmology. The change is from the positivistic views in which atomism, nondeterminism and measurement are fundamental, to a holistic view in realism, wherein matter - electrons, galaxies, - are correlated modes of a single continuum, the universe. A field that unifies electromagnetism, gravity and inertia is demonstrated explicitly, with new predictions, in terms of quaternion and spinor field equations in a curved spacetime. Quantum mechanics emerges as a linear, flatspace approximation for the equations of inertia in general relativity.

Experimental Search for Quantum Gravity

Sabine Hossenfelder
Experimental Search for Quantum Gravity Book PDF

Author : Sabine Hossenfelder
Publisher : Springer
Page : 120 pages
File Size : 45,8 Mb
Release : 2017-11-15
Category : Science
ISBN : 9783319645377

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Experimental Search for Quantum Gravity by Sabine Hossenfelder Pdf

This book summarizes recent developments in the research area of quantum gravity phenomenology. A series of short and nontechnical essays lays out the prospects of various experimental possibilities and their current status. Finding observational evidence for the quantization of space-time was long thought impossible. In the last decade however, new experimental design and technological advances have changed the research landscape and opened new perspectives on quantum gravity. Formerly dominated by purely theoretical constructions, quantum gravity now has a lively phenomenology to offer. From high precision measurements using macroscopic quantum oscillators to new analysis methods of the cosmic microwave background, no stone is being left unturned in the experimental search for quantum gravity. This book sheds new light on the connection of astroparticle physics with the quantum gravity problem. Gravitational waves and their detection are covered. It illustrates findings from the interconnection between general relativity, black holes and Planck stars. Finally, the return on investment in quantum-gravitation research is illuminated. The book is intended for graduate students and researchers entering the field.

Quantum Gravity

Claus Kiefer
Quantum Gravity Book PDF

Author : Claus Kiefer
Publisher : Oxford University Press
Page : 406 pages
File Size : 42,9 Mb
Release : 2012-04-05
Category : Mathematics
ISBN : 9780199585205

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Quantum Gravity by Claus Kiefer Pdf

Quantum theory and Einstein's theory of relativity are at the centre of modern theoretical physics, yet, the consistent unification of both theories is still elusive. This book offers an up-to-date introduction into the attempts to construct a unified theory of "quantum gravity".

Quantum Gravity in 2+1 Dimensions

Steven Carlip,Steven Jonathan Carlip
Quantum Gravity in 2 1 Dimensions Book PDF

Author : Steven Carlip,Steven Jonathan Carlip
Publisher : Cambridge University Press
Page : 296 pages
File Size : 45,9 Mb
Release : 2003-12-04
Category : Science
ISBN : 0521545889

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Quantum Gravity in 2+1 Dimensions by Steven Carlip,Steven Jonathan Carlip Pdf

The first comprehensive survey of (2+1)-dimensional quantum gravity - for graduate students and researchers.

Quantum Gravity

Carlo Rovelli
Quantum Gravity Book PDF

Author : Carlo Rovelli
Publisher : Cambridge University Press
Page : 128 pages
File Size : 47,7 Mb
Release : 2007-11-29
Category : Science
ISBN : 9781139456159

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Quantum Gravity by Carlo Rovelli Pdf

Quantum gravity is perhaps the most important open problem in fundamental physics. It is the problem of merging quantum mechanics and general relativity, the two great conceptual revolutions in the physics of the twentieth century. The loop and spinfoam approach, presented in this 2004 book, is one of the leading research programs in the field. The first part of the book discusses the reformulation of the basis of classical and quantum Hamiltonian physics required by general relativity. The second part covers the basic technical research directions. Appendices include a detailed history of the subject of quantum gravity, hard-to-find mathematical material, and a discussion of some philosophical issues raised by the subject. This fascinating text is ideal for graduate students entering the field, as well as researchers already working in quantum gravity. It will also appeal to philosophers and other scholars interested in the nature of space and time.

Quantum Gravity

Domenico J. W. Giulini,Claus Kiefer,Claus Lämmerzahl
Quantum Gravity Book PDF

Author : Domenico J. W. Giulini,Claus Kiefer,Claus Lämmerzahl
Publisher : Springer Science & Business Media
Page : 426 pages
File Size : 42,9 Mb
Release : 2003-09-16
Category : Science
ISBN : 354040810X

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Quantum Gravity by Domenico J. W. Giulini,Claus Kiefer,Claus Lämmerzahl Pdf

The relation between quantum theory and the theory of gravitation remains one of the most outstanding unresolved issues of modern physics. According to general expectation, general relativity as well as quantum (field) theory in a fixed background spacetime cannot be fundamentally correct. Hence there should exist a broader theory comprising both in appropriate limits, i.e., quantum gravity. This book gives readers a comprehensive introduction accessible to interested non-experts to the main issues surrounding the search for quantum gravity. These issues relate to fundamental questions concerning the various formalisms of quantization; specific questions concerning concrete processes, like gravitational collapse or black-hole evaporation; and the all important question concerning the possibility of experimental tests of quantum-gravity effects.

Foundations of Quantum Gravity

James Lindesay
Foundations of Quantum Gravity Book PDF

Author : James Lindesay
Publisher : Cambridge University Press
Page : 128 pages
File Size : 41,6 Mb
Release : 2013-05-16
Category : Science
ISBN : 9781107328303

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Foundations of Quantum Gravity by James Lindesay Pdf

Exploring how the subtleties of quantum coherence can be consistently incorporated into Einstein's theory of gravitation, this book is ideal for researchers interested in the foundations of relativity and quantum physics. The book examines those properties of coherent gravitating systems that are most closely connected to experimental observations. Examples of consistent co-gravitating quantum systems whose overall effects upon the geometry are independent of the coherence state of each constituent are provided, and the properties of the trapping regions of non-singular black objects, black holes and a dynamic de Sitter cosmology are discussed analytically, numerically and diagrammatically. The extensive use of diagrams to summarise the results of the mathematics enables readers to bypass the need for a detailed understanding of the steps involved. Assuming some knowledge of quantum physics and relativity, the book provides text boxes featuring supplementary information for readers particularly interested in the philosophy and foundations of the physics.

Conversations on Quantum Gravity

Jácome Armas
Conversations on Quantum Gravity Book PDF

Author : Jácome Armas
Publisher : Cambridge University Press
Page : 719 pages
File Size : 41,7 Mb
Release : 2021-08-26
Category : Biography & Autobiography
ISBN : 9781107168879

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Conversations on Quantum Gravity by Jácome Armas Pdf

Leading theorists share their important insights into the ongoing quest of theoretical physics to find a quantum theory of gravity.

Heat Kernel and Quantum Gravity

Ivan G. Avramidi
Heat Kernel and Quantum Gravity Book PDF

Author : Ivan G. Avramidi
Publisher : Springer Science & Business Media
Page : 152 pages
File Size : 51,9 Mb
Release : 2003-07-01
Category : Science
ISBN : 9783540465232

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Heat Kernel and Quantum Gravity by Ivan G. Avramidi Pdf

This book tackles quantum gravity via the so-called background field method and its effective action functional. The author presents an explicitly covariant and effective technique to calculate the de Witt coefficients and to analyze the Schwinger-de Wit asymptotic expansion of the effective action. He also investigates the ultraviolet behaviour of higher-derivative quantum gravity. The book addresses theoretical physicists, graduate students as well as researchers, but should also be of interest to physicists working in mathematical or elementary particle physics.

The Meaning of Quantum Gravity

Horst-Heino Borzeszkowski,H.J. Treder
The Meaning of Quantum Gravity Book PDF

Author : Horst-Heino Borzeszkowski,H.J. Treder
Publisher : Springer Science & Business Media
Page : 140 pages
File Size : 55,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400938939

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The Meaning of Quantum Gravity by Horst-Heino Borzeszkowski,H.J. Treder Pdf

In discussing the question of whether General Relativity Theory really needs to be quantized, a simply negative answer cannot be accepted, of course. Such an answer is not satisfying because, first, Einstein's gravitational equations connect gravity and non-gravitational matter and because, second, it can be taken for granted that non-gravitational matter has an atomic or quantum structure such that its energy-momentum tensor standing on the right-hand side of Einstein's equations is formed out of quantum operators. These two facts make it impossible to read the left-hand side of Einstein's equations as an ordinary classical function. This does not necessarily mean, however, that we must draw the conclusion that General Relativity Theory, similar to electrodynamics, could or should be quantized in a rigorous manner and that this quantization has similar consequences to quantum electrodynamics. In other words, when for reasons of consistency quantization is tried, then one has to ask whether and where the quantization procedure has a physical meaning, i.e., whether there exist measurable effects of quantum gravity. IQ accordance with these questions, we are mainly dealing with the discus sion of the principles of quantized General Relativity Theory and with the estimation of quantum effects including the question of their measurability. This analysis proves that it is impossible to distinguish between classical and quantum General Relativity Theory for the extreme case of Planck's orders of magnitude. In other words, there does not exist a physically meaningful rigorous quantization conception for Einstein's theory.

Introduction to Quantum Effects in Gravity

Viatcheslav Mukhanov,Sergei Winitzki
Introduction to Quantum Effects in Gravity Book PDF

Author : Viatcheslav Mukhanov,Sergei Winitzki
Publisher : Cambridge University Press
Page : 298 pages
File Size : 45,7 Mb
Release : 2007-06-14
Category : Mathematics
ISBN : 0521868343

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Introduction to Quantum Effects in Gravity by Viatcheslav Mukhanov,Sergei Winitzki Pdf

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Quantum Space

Jim Baggott
Quantum Space Book PDF

Author : Jim Baggott
Publisher : Oxford University Press
Page : 320 pages
File Size : 43,8 Mb
Release : 2018-11-08
Category : Science
ISBN : 9780192536808

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Quantum Space by Jim Baggott Pdf

Today we are blessed with two extraordinarily successful theories of physics. The first is Albert Einstein's general theory of relativity, which describes the large-scale behaviour of matter in a curved spacetime. This theory is the basis for the standard model of big bang cosmology. The discovery of gravitational waves at the LIGO observatory in the US (and then Virgo, in Italy) is only the most recent of this theory's many triumphs. The second is quantum mechanics. This theory describes the properties and behaviour of matter and radiation at their smallest scales. It is the basis for the standard model of particle physics, which builds up all the visible constituents of the universe out of collections of quarks, electrons and force-carrying particles such as photons. The discovery of the Higgs boson at CERN in Geneva is only the most recent of this theory's many triumphs. But, while they are both highly successful, these two structures leave a lot of important questions unanswered. They are also based on two different interpretations of space and time, and are therefore fundamentally incompatible. We have two descriptions but, as far as we know, we've only ever had one universe. What we need is a quantum theory of gravity. Approaches to formulating such a theory have primarily followed two paths. One leads to String Theory, which has for long been fashionable, and about which much has been written. But String Theory has become mired in problems. In this book, Jim Baggott describes ": an approach which takes relativity as its starting point, and leads to a structure called Loop Quantum Gravity. Baggott tells the story through the careers and pioneering work of two of the theory's most prominent contributors, Lee Smolin and Carlo Rovelli. Combining clear discussions of both quantum theory and general relativity, this book offers one of the first efforts to explain the new quantum theory of space and time.