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| Author | : Astrid Eichhorn |
| Publisher | : Frontiers Media SA |
| Total Pages | : 298 |
| Release | : 2021-07-15 |
| Genre | : Science |
| ISBN | : 2889710491 |
| Author | : Abhay Ashtekar |
| Publisher | : World Scientific |
| Total Pages | : 320 |
| Release | : 2017-03-16 |
| Genre | : Science |
| ISBN | : 9813220015 |
'Written by young theoretical physicists who are experts in the field, this volume is meant both to provide an introduction to the field and to offer a review of the latest developments, not discussed in many other existing books, for senior researchers. It will also appeal to scientists who do not work directly on LQG but are interested in issues at the interface of general relativity and quantum physics.'CERN CourierThis volume presents a snapshot of the state-of-the-art in loop quantum gravity from the perspective of younger leading researchers. It takes the reader from the basics to recent advances, thereby bridging an important gap.The aim is two-fold — to provide a contemporary introduction to the entire field for students and post-docs, and to present an overview of the current status for more senior researchers. The contributions include the latest developments that are not discussed in existing books, particularly recent advances in quantum dynamics both in the Hamiltonian and sum over histories approaches; and applications to cosmology of the early universe and to the quantum aspects of black holes.
| Author | : Yuki Sato |
| Publisher | : Springer |
| Total Pages | : 112 |
| Release | : 2014-05-28 |
| Genre | : Science |
| ISBN | : 4431549471 |
In this thesis, the author considers quantum gravity to investigate the mysterious origin of our universe and its mechanisms. He and his collaborators have greatly improved the analyticity of two models: causal dynamical triangulations (CDT) and n-DBI gravity, with the space-time foliation which is one common factor shared by these two separate models. In the first part, the analytic method of coupling matters to CDT in 2-dimensional toy models is proposed to uncover the underlying mechanisms of the universe and to remove ambiguities remaining in CDT. As a result, the wave function of the 2-dimensional universe where matters are coupled is derived. The behavior of the wave function reveals that the Hausdorff dimension can be changed when the matter is non-unitary. In the second part, the n-DBI gravity model is considered. The author mainly investigates two effects driven by the space-time foliation: the appearance of a new conserved charge in black holes and an extra scalar mode of the graviton. The former implies a breakdown of the black-hole uniqueness theorem while the latter does not show any pathological behavior.
| Author | : Jürgen Audretsch |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 576 |
| Release | : 1990 |
| Genre | : Mathematics |
| ISBN | : |
A survey of the empirical aspects, the conceptual basis, and the related fundamental problems, as well as the astrophysical and cosmological applications of the title subject. Specific topics include accelerated particle detectors and the operational meaning of the particle concept in curved space-t
| Author | : Bei-Lok B. Hu |
| Publisher | : Cambridge University Press |
| Total Pages | : 615 |
| Release | : 2020-03-05 |
| Genre | : Science |
| ISBN | : 0521193575 |
An overview of semi-classical gravity theory and stochastic gravity as theories of quantum gravity in curved space-time.
| Author | : Jeff Murugan |
| Publisher | : Cambridge University Press |
| Total Pages | : 453 |
| Release | : 2012-07-19 |
| Genre | : Science |
| ISBN | : 0521114403 |
Encapsulates the latest debates on this topic, giving researchers and graduate students an up-to-date view of the field.
| Author | : Bertfried Fauser |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 343 |
| Release | : 2007-02-15 |
| Genre | : Science |
| ISBN | : 3764379782 |
This book provides the reader with an overview of the different mathematical attempts to quantize gravity written by leading experts in this field. Also discussed are the possible experimental bounds on quantum gravity effects. The contributions have been strictly refereed and are written in an accessible style. The present volume emerged from the 2nd Blaubeuren Workshop "Mathematical and Physical Aspects of Quantum Gravity".
| Author | : Carlo Rovelli |
| Publisher | : Cambridge University Press |
| Total Pages | : 488 |
| Release | : 2004-11-15 |
| Genre | : Science |
| ISBN | : 9780521837330 |
Publisher Description
| Author | : Rodolfo Gambini |
| Publisher | : OUP Oxford |
| Total Pages | : 192 |
| Release | : 2011-09-22 |
| Genre | : Science |
| ISBN | : 0191003239 |
This book provides an accessible introduction to loop quantum gravity and some of its applications, at a level suitable for undergraduate students and others with only a minimal knowledge of college level physics. In particular it is not assumed that the reader is familiar with general relativity and only minimally familiar with quantum mechanics and Hamiltonian mechanics. Most chapters end with problems that elaborate on the text, and aid learning. Applications such as loop quantum cosmology, black hole entropy and spin foams are briefly covered. The text is ideally suited for an undergraduate course in the senior year of a physics major. It can also be used to introduce undergraduates to general relativity and quantum field theory as part of a 'special topics' type of course.
| Author | : Alessia Benedetta Platania |
| Publisher | : |
| Total Pages | : 142 |
| Release | : 2018 |
| Genre | : Quantum gravity |
| ISBN | : 9783319987958 |
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.
