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Euclidean Quantum Gravity

1993 Science
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Release : 1993
Genre : Science
Kind : eBook
Book Rating : 164/5 ( reviews)

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Book Synopsis Euclidean Quantum Gravity by : G. W. Gibbons

Download or read book Euclidean Quantum Gravity written by G. W. Gibbons. This book was released on 1993. Available in PDF, EPUB and Kindle. Book excerpt: The Euclidean approach to Quantum Gravity was initiated almost 15 years ago in an attempt to understand the difficulties raised by the spacetime singularities of classical general relativity which arise in the gravitational collapse of stars to form black holes and the entire universe in the Big Bang. An important motivation was to develop an approach capable of dealing with the nonlinear, non-perturbative aspects of quantum gravity due to topologically non-trivial spacetimes. There are important links with a Riemannian geometry. Since its inception the theory has been applied to a number of important physical problems including the thermodynamic properties of black holes, quantum cosmology and the problem of the cosmological constant. It is currently at the centre of a great deal of interest.This is a collection of survey lectures and reprints of some important lectures on the Euclidean approach to quantum gravity in which one expresses the Feynman path integral as a sum over Riemannian metrics. As well as papers on the basic formalism there are sections on Black Holes, Quantum Cosmology, Wormholes and Gravitational Instantons.

Wormholes in Euclidean Quantum Gravity

1992 Electronic dissertations
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Release : 1992
Genre : Electronic dissertations
Kind : eBook
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Book Synopsis Wormholes in Euclidean Quantum Gravity by : Stuart Alexander Ridgway

Download or read book Wormholes in Euclidean Quantum Gravity written by Stuart Alexander Ridgway. This book was released on 1992. Available in PDF, EPUB and Kindle. Book excerpt:

Lorentzian Wormholes

1995 Science
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Release : 1995
Genre : Science
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Book Synopsis Lorentzian Wormholes by : Matt Visser

Download or read book Lorentzian Wormholes written by Matt Visser. This book was released on 1995. Available in PDF, EPUB and Kindle. Book excerpt: Drawing on pivotal work by Einstein, Wheeler, Thorne, Hawking, and others, Matt Visser charts the development and current state of Lorentzian wormhole physics. Dr. Visser shows that by pushing established physical theories to their limits, it is possible to deduce the true physics of such exotica as wormholes and time travel. The physical framework he uses is derived from one of the major research frontiers of modern theoretical physics: quantum gravity the intersection of classical Einstein gravity and quantum field theory. About the Author Matt Visser is Research Assistant Professor at Washington University, St. Louis. He has lectured in the United States and abroad on topics including wormhole physics, time travel, and the chronology protection conjecture. He has conducted postdoctoral research at both the University of Southern California and at Los Alamos National Laboratory.

Chaos, Wormholes, and Holography

2023
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Release : 2023
Genre :
Kind : eBook
Book Rating : 755/5 ( reviews)

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Book Synopsis Chaos, Wormholes, and Holography by : Jeremy van der Heijden

Download or read book Chaos, Wormholes, and Holography written by Jeremy van der Heijden. This book was released on 2023. Available in PDF, EPUB and Kindle. Book excerpt: "Combining quantum mechanics and general relativity is one of the most important open problems in theoretical physics. A formal approach towards quantizing gravity is given by the gravitational path integral. However, dealing with quantum fluctuations of spacetime itself is in general a very complicated task. In this thesis, I therefore study a simple model of two-dimensional gravity in Anti-de Sitter (AdS) space where it is possible to calculate exactly a class of such quantum fluctuations, so-called Euclidean wormholes, which correspond to geometries with a non-trivial topology. This computation relies on the holographic principle: the idea that AdS gravity is dual to some microscopic quantum theory without gravity, a conformal field theory (CFT), that lives in one dimension less. Surprisingly, the non-trivial surfaces appear to contain important information about this underlying quantum theory: They point to a deep connection between quantum gravity and quantum chaos. To be precise, the results of this thesis show that black holes in two-dimensional AdS space obey the rules of quantum chaos, and that the relevant quantum effects can be realized geometrically in the path integral. This is an important step towards understanding the quantum nature of black holes. Finally, I study the role of geometric phases in the AdS/CFT correspondence, and show that the modular Berry phase in the CFT is holographically dual to a particular geometric quantity in the AdS space, the so-called bulk symplectic form."--

Quantum Gravity in 2+1 Dimensions

2003-12-04 Science
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Release : 2003-12-04
Genre : Science
Kind : eBook
Book Rating : 884/5 ( reviews)

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Book Synopsis Quantum Gravity in 2+1 Dimensions by : Steven Carlip

Download or read book Quantum Gravity in 2+1 Dimensions written by Steven Carlip. This book was released on 2003-12-04. Available in PDF, EPUB and Kindle. Book excerpt: The first comprehensive survey of (2+1)-dimensional quantum gravity - for graduate students and researchers.

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