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Author : Astrid Eichhorn,Benjamin Bahr,Antonio D. Pereira
Publisher : Frontiers Media SA
Page : 298 pages
File Size : 45,9 Mb
Release : 2021-07-15
Category : Science
ISBN : 9782889710492
Author : Daniele Oriti
Publisher : Cambridge University Press
Page : 605 pages
File Size : 52,5 Mb
Release : 2009-03-05
Category : Science
ISBN : 9780521860451
Containing contributions from leading researchers in this field, this book provides a complete overview of this field from the frontiers of theoretical physics research for graduate students and researchers. It introduces the most current approaches to this problem, and reviews their main achievements.
Author : Lawrence B. Crowell
Publisher : World Scientific
Page : 388 pages
File Size : 53,9 Mb
Release : 2005
Category : Science
ISBN : 9789812565150
Three key aspects of quantum gravity are considered in this book: phenomenology, potential experimental aspects and foundational theory. The phenomenology is the treatment of metric quantum fluctuations as torsional curves that deviate from classical expectations. This leads to possible experimental configurations that may detect such fluctuations. Most of these proposed experiments are quantum optical measurements of subtle quantum gravity effects in the interaction of photons and atoms. The foundational discussions attempt to find an substratum to string theories, which are motivated by the phenomenological treatment. Quantum gravity is not the quantization of general relativity, but is instead the embedding of quantum theory and gravitation into a more fundamental field theoretic framework.
Author : Jeff Murugan,Amanda Weltman,George F. R. Ellis
Publisher : Cambridge University Press
Page : 453 pages
File Size : 42,8 Mb
Release : 2012-07-19
Category : Science
ISBN : 9780521114400
Encapsulates the latest debates on this topic, giving researchers and graduate students an up-to-date view of the field.
Author : Rodolfo Gambini,Jorge Pullin
Publisher : Oxford University Press
Page : 192 pages
File Size : 47,8 Mb
Release : 2011-09-22
Category : Science
ISBN : 9780199590759
Loop quantum gravity is one of the modern contenders for a unified description of quantum mechanics and gravity. Up to now no book has covered the material at the level of a college student or of other readers with some knowledge of college level physics. This book fills that gap.
Author : Bei-Lok B. Hu,Enric Verdaguer
Publisher : Cambridge University Press
Page : 615 pages
File Size : 52,7 Mb
Release : 2020-03-05
Category : Science
ISBN : 9780521193573
An overview of semi-classical gravity theory and stochastic gravity as theories of quantum gravity in curved space-time.
Author : Gaetano Lambiase,Giorgio Papini
Publisher : Springer Nature
Page : 201 pages
File Size : 45,6 Mb
Release : 2021-09-27
Category : Science
ISBN : 9783030847715
This book seeks to present a new way of thinking about the interaction of gravitational fields with quantum systems. Despite the massive amounts of research and experimentation, the myriad meetings, seminars and conferences, all of the articles, treatises and books, and the seemingly endless theorization, quantization and just plain speculation that have been engaged in regarding our evolving understanding of the quantum world, that world remains an enigma, even to the experts. The usefulness of general relativity in this regard has proven to be imperfect at best, but there is a new approach. We do not simply have to accept the limitations of Einstein's most celebrated theorem in regard to quantum theory; we can also embrace them, and thereby utilize them, to reveal new facts about the behavior of quantum systems within inertial and gravitational fields, and therefore about the very structure of space–time at the quantum level. By taking existing knowledge of the essential functionality of spin (along with the careful identification of the omnipresent inertial effects) and applying it to the quantum world, the book gives the reader a much clearer picture of the difference between the classical and quantum behaviors of a particle, shows that Einstein's ideas may not be as incompatible within this realm as many have come to believe, sparks new revelations of the way in which gravity affects quantum systems and brings a new level of efficiency—quantum efficiency, if you will—to the study of gravitational theory.
Author : Steven Carlip,Steven Jonathan Carlip
Publisher : Cambridge University Press
Page : 296 pages
File Size : 46,7 Mb
Release : 2003-12-04
Category : Science
ISBN : 0521545889
The first comprehensive survey of (2+1)-dimensional quantum gravity - for graduate students and researchers.
Author : Alessia Benedetta Platania
Publisher : Unknown
Page : 142 pages
File Size : 42,9 Mb
Release : 2018
Category : Quantum gravity
ISBN : 331998795X
This book seeks to construct a consistent fundamental quantum theory of gravity, which is often considered one of the most challenging open problems in present-day physics. It approaches this challenge using modern functional renormalization group techniques, and attempts to realize the idea of "Asymptotic Safety" originally proposed by S. Weinberg. Quite remarkably, the book makes significant progress regarding both the fundamental aspects of the program and its phenomenological consequences. The conceptual developments pioneer the construction of a well-behaved functional renormalization group equation adapted to spacetimes with a preferred time-direction. It is demonstrated that the Asymptotic Safety mechanism persists in this setting and extends to many phenomenologically interesting gravity-matter systems. These achievements constitute groundbreaking steps towards bridging the gap between quantum gravity in Euclidean and Lorentzian spacetimes. The phenomenological applications cover core topics in quantum gravity, e.g. constructing a phenomenologically viable cosmological evolution based on quantum gravity effects in the very early universe, and analyzing quantum corrections to black holes forming from a spherical collapse. As a key feature, all developments are presented in a comprehensive and accessible way. This makes the work a timely and valuable guide into the rapidly evolving field of Asymptotic Safety.
Author : Steffen Gielen,Sylvain Carrozza,Daniele Oriti
Publisher : MDPI
Page : 338 pages
File Size : 45,8 Mb
Release : 2020-07-01
Category : Mathematics
ISBN : 9783039361786
Following the fundamental insights from quantum mechanics and general relativity, geometry itself should have a quantum description; the search for a complete understanding of this description is what drives the field of quantum gravity. Group field theory is an ambitious framework in which theories of quantum geometry are formulated, incorporating successful ideas from the fields of matrix models, ten-sor models, spin foam models and loop quantum gravity, as well as from the broader areas of quantum field theory and mathematical physics. This special issue collects recent work in group field theory and these related approaches, as well as other neighbouring fields (e.g., cosmology, quantum information and quantum foundations, statistical physics) to the extent that these are directly relevant to quantum gravity research.
Author : Jens Boos
Publisher : Springer Nature
Page : 223 pages
File Size : 43,9 Mb
Release : 2021-10-28
Category : Science
ISBN : 9783030829100
This thesis is devoted to the systematic study of non-local theories that respect Lorentz invariance and are devoid of new, unphysical degrees of freedom. Such theories are attractive for phenomenological applications since they are mostly unconstrained by current experiments. Non-locality has played an increasingly important role in the physics of the last decades, appearing in effective actions in quantum field theory, and arising naturally in string theory and non-commutative geometry. It may even be a necessary ingredient for quantum theories of gravity. It is a feature of quantum entanglement, and may even solve the long-standing black hole information loss problem. “Non-locality” is a broad concept with many promising and fruitful applications in theoretical and mathematical physics. After a historical and pedagogical introduction into the concept of non-locality the author develops the notion of non-local Green functions to study various non-local weak-field problems in quantum mechanics, quantum field theory, gravity, and quantum field theory in curved spacetime. This thesis fills a gap in the literature by providing a self-contained exploration of weak-field effects in non-local theories, thereby establishing a “non-local intuition” which may serve as a stepping stone for studies of the full, non-linear problem of non-locality.
Author : Jim Baggott
Publisher : Oxford University Press, USA
Page : 448 pages
File Size : 53,7 Mb
Release : 2022-03
Category : Electronic
ISBN : 0198809123
The greatest challenge for physics is to combine its two most successful theories: general relativity and quantum mechanics. The resulting quantum theory of gravity would explain the universe across all scales. Much has been said about the approach based on string theory. Here, Jim Baggott describes its powerful rival: Loop Quantum Gravity.
Author : Viatcheslav Mukhanov,Sergei Winitzki
Publisher : Cambridge University Press
Page : 298 pages
File Size : 41,8 Mb
Release : 2007-06-14
Category : Mathematics
ISBN : 0521868343
Publisher description
Author : Abhay Ashtekar,Jorge Pullin
Publisher : World Scientific Publishing Company
Page : 0 pages
File Size : 46,6 Mb
Release : 2017
Category : Quantum cosmology
ISBN : 9813209925
"Over the last decade, several important advances have occurred, that include the continuum and classical limit of the non-perturbative theory on the conceptual side, and concrete ideas on confronting quantum gravity with observations in cosmology. This volume takes the reader from basics to recent advances, thereby bridging an important gap. It presents a snapshot of the state-of-the-art in loop quantum gravity from the perspective of young leading researchers. The goal is two-fold: to provide a contemporary introduction to the entire field for students and post-docs and, an overview of the current status for more senior researchers. These overviews present the latest developments that are not discussed in existing books, particularly the applications to the cosmology of the early universe and quantum aspects of black holes"--
Author : Reginald T. Cahill
Publisher : Unknown
Page : 234 pages
File Size : 48,9 Mb
Release : 2005
Category : Science
ISBN : UOM:39015062565547
This book is about a new and very radical information-theoretic approach to comprehending and modelling reality. It is called "Process Physics" because it uses a process model of time rather than, as in current physics, a non-process geometrical model of time, a model so successfully developed and used by Galileo, Newton, Einstein and others that for many physicists the phenomenon of time is actually identified with this geometrical model. Now, for the first time in the history of physics, we have a model of time that includes the distinctions between past, present and future. These distinctions cannot be made in the geometrical model of time. For this reason we can call the current prevailing physics Non-Process Physics. In Process Physics we turn to a fundamental reformulation of the key concepts in physics. This entails that we must identify both the successes and failures of the Non-Process Physics, for it almost succeeded.