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 Gravitation

Quantum Gravitation
Author: Herbert W. Hamber
Publisher: Springer Science & Business Media
Total Pages: 342
Release: 2008-10-20
Genre: Science
ISBN: 354085293X

"Quantum Gravitation" approaches the subject from the point of view of Feynman path integrals, which provide a manifestly covariant approach in which fundamental quantum aspects of the theory such as radiative corrections and the renormalization group can be systematically and consistently addressed. It is shown that the path integral method is suitable for both perturbative as well as non-perturbative studies, and is already known to offer a framework for the theoretical investigation of non-Abelian gauge theories, the basis for three of the four known fundamental forces in nature. The book thus provides a coherent outline of the present status of the theory gravity based on Feynman’s formulation, with an emphasis on quantitative results. Topics are organized in such a way that the correspondence to similar methods and results in modern gauge theories becomes apparent. Covariant perturbation theory are developed using the full machinery of Feynman rules, gauge fixing, background methods and ghosts. The renormalization group for gravity and the existence of non-trivial ultraviolet fixed points are investigated, stressing a close correspondence with well understood statistical field theory models. The final chapter addresses contemporary issues in quantum cosmology such as scale dependent gravitational constants and quantum effects in the early universe.

String Theory And Quantum Gravity '92 - Proceedings Of The Trieste Spring School And Workshop

String Theory And Quantum Gravity '92 - Proceedings Of The Trieste Spring School And Workshop
Author: Jeffrey A Harvey
Publisher: World Scientific
Total Pages: 422
Release: 1993-06-30
Genre:
ISBN: 9814553247

Contents:Ising Model and N = 2 Supersymmetric Theories (S Cecotti & C Vafa)The Dark Side of String Theory: Black Holes and Black Strings (G T Horowitz)Some Recent Developments in Closed String Field Theory (A Sen) Quantum Aspects of Black Holes (J A Harvey & A Strominger)The One Dimensional Matrix Model and String Theory (S R Das)Gravity and Gauge Theory at High Energies (H Verlinde)Notes on N = 2 σ-Models (J Distler)The W Geometry of Chiral Surfaces in Complex Projective Spaces (J-L Gervals)On Physical States in 2d (Topological) Gravity (P Bouwknegt et al)Dynamics of the Conformal Factor in 4D Gravity (I Antoniadis)Non-Relativistic Fermions, Coadjoint Orbits of W8 and String Field Theory at c = 1 (A Dhar et al)Simplicial Quantum Gravity (J Ambjørn et al)Gravitational Scattering at Planckian Energies: The Eikonal and Beyond (D Amati)A Proposal for D > 1 Strings? (L Alvarez-Gaumé & J L F Barbón)Differential Equations in Special Kähler Geometry (J Louis)N = 2 First Order Systems: Landau-Ginzburg Potentials and Topological Twist (P Fre & P Soriani) Readership: High energy physicists. keywords:

Why Trust a Theory?

Why Trust a Theory?
Author: Radin Dardashti
Publisher: Cambridge University Press
Total Pages: 451
Release: 2019-03-14
Genre: Science
ISBN: 110860515X

Do we need to reconsider scientific methodology in light of modern physics? Has the traditional scientific method become outdated, does it need to be defended against dangerous incursions, or has it always been different from what the canonical view suggests? To what extent should we accept non-empirical strategies for scientific theory assessment? Many core aspects of contemporary fundamental physics are far from empirically well-confirmed. There is controversy on the epistemic status of the corresponding theories, in particular cosmic inflation, the multiverse, and string theory. This collection of essays is based on the high profile workshop 'Why Trust a Theory?' and provides interdisciplinary perspectives on empirical testing in fundamental physics from leading physicists, philosophers and historians of science. Integrating different contemporary and historical positions, it will be of interest to philosophers of science and physicists, as well as anyone interested in the foundations of contemporary science.

String Theory and M-Theory

String Theory and M-Theory
Author: Katrin Becker
Publisher: Cambridge University Press
Total Pages: 756
Release: 2006-12-07
Genre: Science
ISBN: 9780521860697

String theory is one of the most exciting and challenging areas of modern theoretical physics. This book guides the reader from the basics of string theory to recent developments. It introduces the basics of perturbative string theory, world-sheet supersymmetry, space-time supersymmetry, conformal field theory and the heterotic string, before describing modern developments, including D-branes, string dualities and M-theory. It then covers string geometry and flux compactifications, applications to cosmology and particle physics, black holes in string theory and M-theory, and the microscopic origin of black-hole entropy. It concludes with Matrix theory, the AdS/CFT duality and its generalizations. This book is ideal for graduate students and researchers in modern string theory, and will make an excellent textbook for a one-year course on string theory. It contains over 120 exercises with solutions, and over 200 homework problems with solutions available on a password protected website for lecturers at www.cambridge.org/9780521860697.

Quantum Field Theory Of Point Particles And Strings

Quantum Field Theory Of Point Particles And Strings
Author: Brian Hatfield
Publisher: CRC Press
Total Pages: 474
Release: 2018-03-09
Genre: Science
ISBN: 0429972865

First Published in 2018. The emphasis of the book is calculational, and most computations are presented in step-by-step detail. The book is unique in that it develops all three representations of quantum field theory (operator, functional Schr dinger, and path integral) for point particles and strings. In many cases, identical results are worked out in each representation to emphasize the representation-independent structures of quantum field theory

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.

A Brief History of String Theory

A Brief History of String Theory
Author: Dean Rickles
Publisher: Springer Science & Business Media
Total Pages: 265
Release: 2014-02-18
Genre: Science
ISBN: 3642451284

During its forty year lifespan, string theory has always had the power to divide, being called both a 'theory of everything' and a 'theory of nothing'. Critics have even questioned whether it qualifies as a scientific theory at all. This book adopts an objective stance, standing back from the question of the truth or falsity of string theory and instead focusing on how it came to be and how it came to occupy its present position in physics. An unexpectedly rich history is revealed, with deep connections to our most well-established physical theories. Fully self-contained and written in a lively fashion, the book will appeal to a wide variety of readers from novice to specialist.

String Theory in a Nutshell

String Theory in a Nutshell
Author: Elias Kiritsis
Publisher: Princeton University Press
Total Pages: 883
Release: 2019-04-16
Genre: Science
ISBN: 0691188963

The essential introduction to modern string theory—now fully expanded and revised String Theory in a Nutshell is the definitive introduction to modern string theory. Written by one of the world’s leading authorities on the subject, this concise and accessible book starts with basic definitions and guides readers from classic topics to the most exciting frontiers of research today. It covers perturbative string theory, the unity of string interactions, black holes and their microscopic entropy, the AdS/CFT correspondence and its applications, matrix model tools for string theory, and more. It also includes 600 exercises and serves as a self-contained guide to the literature. This fully updated edition features an entirely new chapter on flux compactifications in string theory, and the chapter on AdS/CFT has been substantially expanded by adding many applications to diverse topics. In addition, the discussion of conformal field theory has been extensively revised to make it more student-friendly. The essential one-volume reference for students and researchers in theoretical high-energy physics Now fully expanded and revised Provides expanded coverage of AdS/CFT and its applications, namely the holographic renormalization group, holographic theories for Yang-Mills and QCD, nonequilibrium thermal physics, finite density physics, and entanglement entropy Ideal for mathematicians and physicists specializing in theoretical cosmology, QCD, and novel approaches to condensed matter systems An online illustration package is available to professors

Covariant Loop Quantum Gravity

Covariant Loop Quantum Gravity
Author: Carlo Rovelli
Publisher: Cambridge University Press
Total Pages: 267
Release: 2015
Genre: Science
ISBN: 1107069629

A comprehensible introduction to the most fascinating research in theoretical physics: advanced quantum gravity. Ideal for researchers and graduate students.