Progress in Group Field Theory and Related Quantum Gravity Formalisms

Progress in Group Field Theory and Related Quantum Gravity Formalisms
Author: Steffen Gielen
Publisher: MDPI
Total Pages: 338
Release: 2020-07-01
Genre: Mathematics
ISBN: 3039361783

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.

Approaches to Quantum Gravity

Approaches to Quantum Gravity
Author: Daniele Oriti
Publisher: Cambridge University Press
Total Pages: 605
Release: 2009-03-05
Genre: Science
ISBN: 0521860458

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.

Quantum Geometry

Quantum Geometry
Author: Jan Ambjørn
Publisher: Cambridge University Press
Total Pages: 377
Release: 1997-06-19
Genre: Science
ISBN: 0521461677

Describes random geometry and applications to strings, quantum gravity, topological field theory and membrane physics.

Physics Meets Philosophy at the Planck Scale

Physics Meets Philosophy at the Planck Scale
Author: Craig Callender
Publisher: Cambridge University Press
Total Pages: 380
Release: 2001-01-29
Genre: Science
ISBN: 9780521664455

Was the first book to examine the exciting area of overlap between philosophy and quantum mechanics with chapters by leading experts from around the world.

Application of New Cybernetics in Physics

Application of New Cybernetics in Physics
Author: Oleg Kupervasser
Publisher: Elsevier
Total Pages: 308
Release: 2017-06-28
Genre: Science
ISBN: 012813318X

Application of New Cybernetics in Physics describes the application of new cybernetics to physical problems and the resolution of basic physical paradoxes by considering external observer influence. This aids the reader in solving problems that were solved incorrectly or have not been solved. Three groups of problems of the new cybernetics are considered in the book: (a) Systems that can be calculated based on known physics of subsystems. This includes the external observer influence calculated from basic physical laws (ideal dynamics) and dynamics of a physical system influenced even by low noise (observable dynamics). (b) Emergent systems. This includes external noise from the observer by using the black box model (complex dynamics), external noise from the observer by using the observer's intuition (unpredictable dynamics), defining boundaries of application of scientific methods for system behavior prediction, and the role of the observer's intuition for unpredictable systems. (c) Methods for solution of basic physical paradoxes by using methods of the new cybernetics: the entropy increase paradox, Schrödinger's cat paradox (wave package reduction in quantum mechanics), the black holes information paradox, and the time wormholes grandfather paradox. All of the above paradoxes have the same resolution based on the principles of new cybernetics. Indeed, even a small interaction of an observer with an observed system results in their time arrows' alignment (synchronization) and results in the paradox resolution and appearance of the universal time arrow. - Provides solutions to the basic physical paradoxes and demonstrates their practical actuality for modern physics - Describes a wide class of molecular physics and kinetic problems to present semi-analytical and semi-qualitative calculations of solvation, flame propagation, and high-molecular formation - Demonstrates the effectiveness in application to complex molecular systems and other many-component objects - Includes numerous illustrations to support the text

A New Kind of Science

A New Kind of Science
Author: Stephen Wolfram
Publisher:
Total Pages: 1197
Release: 2002
Genre: Cellular automata
ISBN: 9780713991161

This work presents a series of dramatic discoveries never before made public. Starting from a collection of simple computer experiments---illustrated in the book by striking computer graphics---Wolfram shows how their unexpected results force a whole new way of looking at the operation of our universe. Wolfram uses his approach to tackle a remarkable array of fundamental problems in science: from the origin of the Second Law of thermodynamics, to the development of complexity in biology, the computational limitations of mathematics, the possibility of a truly fundamental theory of physics, and the interplay between free will and determinism.

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

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

A First Course in Loop Quantum Gravity

A First Course in Loop Quantum Gravity
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.