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Semiclassical and Stochastic Gravity

Semiclassical and Stochastic Gravity
Author: Bei-Lok B. Hu
Publisher: Cambridge University Press
Total Pages: 615
Release: 2020-03-05
Genre: Science
ISBN: 0521193575

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An overview of semi-classical gravity theory and stochastic gravity as theories of quantum gravity in curved space-time.


Semiclassical and Stochastic Gravity

Semiclassical and Stochastic Gravity
Author: Bei-Lok B. Hu
Publisher: Cambridge University Press
Total Pages: 615
Release: 2020-03-05
Genre: Science
ISBN: 1108854141

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The two pillars of modern physics are general relativity and quantum field theory, the former describes the large scale structure and dynamics of space-time, the latter, the microscopic constituents of matter. Combining the two yields quantum field theory in curved space-time, which is needed to understand quantum field processes in the early universe and black holes, such as the well-known Hawking effect. This book examines the effects of quantum field processes back-reacting on the background space-time which become important near the Planck time (10-43 sec). It explores the self-consistent description of both space-time and matter via the semiclassical Einstein equation of semiclassical gravity theory, exemplified by the inflationary cosmology, and fluctuations of quantum fields which underpin stochastic gravity, necessary for the description of metric fluctuations (space-time foams). Covering over four decades of thematic development, this book is a valuable resource for researchers interested in quantum field theory, gravitation and cosmology.


Experimental Search for Quantum Gravity

Experimental Search for Quantum Gravity
Author: Sabine Hossenfelder
Publisher: Springer
Total Pages: 121
Release: 2017-11-15
Genre: Science
ISBN: 3319645374

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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.


Advances in the Interplay Between Quantum and Gravity Physics

Advances in the Interplay Between Quantum and Gravity Physics
Author: Peter G. Bergmann
Publisher: Springer Science & Business Media
Total Pages: 553
Release: 2012-12-06
Genre: Science
ISBN: 9401003475

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In this XVII Course of the International School of Cosmology and Gravitation devoted to "ADVANCES IN THE INTERPLAY BETWEEN QUANTUM AND GRAVITY PHYSICS" we have considered different aspects of the influence of gravity on quantum systems. In order to achieve this aim, in many lectures, seminars and discussions we have strengthened the interplay between gravity and quantum systems starting from the situation in the early universe based on astrophysical observations, up to the earthly based experiments with atom interferometry for probing the structure of space-time. Thus we have had timely lectures on the quantum field and horizon of a black hole including reviews of the problem of black holes thermodynamics and entropy, quantum information, quantum black holes, quantum evaporation and Hawking radiation, recent advances in stockastic gravity. We have also discussed quantum fluctuations in inflationary universe, quantum effects and reheating after inflation, and superplanckian energies in Hawking radiation. In this regard the subject of spinors in purely affine space-time and Dirac matter according to Weyl in the generalized theory of gravitation were developed . The dualism between space-time and matter has been deeply analyzed in order to see why, for general relativity, this is an obstacle for quantization of the theory. Also canonical Gravity and Mach's principle, torsion and curvature as commutator for Quantum Gravity and Dirac Geometry of real space-time were analysed, together with the problem of 5-Dimensional Projective Unified Field theory and Multidimensional Gravity and Cosmology.


Theories of Gravitation

Theories of Gravitation
Author: Source Wikipedia
Publisher: University-Press.org
Total Pages: 118
Release: 2013-09
Genre:
ISBN: 9781230589480

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 117. Chapters: Theory of everything, Kaluza-Klein theory, Quantum gravity, Cosmological constant, Le Sage's theory of gravitation, Alternatives to general relativity, Introduction to general relativity, An Exceptionally Simple Theory of Everything, Einstein-Cartan theory, Newton's law of universal gravitation, Nordstrom's theory of gravitation, Self-creation cosmology, Modified Newtonian dynamics, Mechanical explanations of gravitation, Supergravity, Large extra dimension, Parameterized post-Newtonian formalism, Stochastic electrodynamics, Mach's principle, History of gravitational theory, Gauss' law for gravity, F(R) gravity, Brans-Dicke theory, Polarizable vacuum, Dark fluid, Unified field theory, Tensor-vector-scalar gravity, Twistor theory, Scalar-tensor-vector gravity, Gravitational instanton, Geometrodynamics, Scalar theories of gravitation, Einstein aether theory, Entropic gravity, Gravitational field, Classical theories of gravitation, Bimetric theory, Lovelock theory of gravity, Teleparallelism, Yilmaz theory of gravitation, Chronology protection conjecture, Nonsymmetric gravitational theory, Newton-Cartan theory, Conformal gravity, Semiclassical gravity, DGP model, Massive gravity, Induced gravity, Whitehead's theory of gravitation, Higher-dimensional Einstein gravity, AQUAL, Mach principle, Ho ava-Lifshitz gravity, Hoyle-Narlikar theory of gravity, Universal extra dimension, Gauss-Bonnet gravity, Graviscalar, Democratic principle, Plebanski action, Bi-scalar tensor vector gravity, Composite gravity, Nuts and bolts.