Quantum Gravity and the Functional Renormalization Group

Quantum Gravity and the Functional Renormalization Group PDF Author: Martin Reuter
Publisher: Cambridge University Press
ISBN: 1107107326
Category : Science
Languages : en
Pages : 357

Get Book

Book Description
A self-contained pedagogical introduction to asymptotic safety and the functional renormalization group in quantum gravity, for graduate students and researchers.

Quantum Gravity and the Functional Renormalization Group

Quantum Gravity and the Functional Renormalization Group PDF Author: Martin Reuter
Publisher: Cambridge University Press
ISBN: 1107107326
Category : Science
Languages : en
Pages : 357

Get Book

Book Description
A self-contained pedagogical introduction to asymptotic safety and the functional renormalization group in quantum gravity, for graduate students and researchers.

Tau Functions and their Applications

Tau Functions and their Applications PDF Author: John Harnad
Publisher: Cambridge University Press
ISBN: 1108492681
Category : Mathematics
Languages : en
Pages : 549

Get Book

Book Description
A thorough introduction to tau functions, from the basics through to the most recent results, with applications in mathematical physics.

Quantum Electron Liquids and High-Tc Superconductivity

Quantum Electron Liquids and High-Tc Superconductivity PDF Author: Jose Gonzalez
Publisher: Springer Science & Business Media
ISBN: 3540476784
Category : Science
Languages : en
Pages : 300

Get Book

Book Description
This book originated from a course given at the Univcrsidad Aut6noma of Madrid in the Spring of 1994 and in the Universidad Complutense of Madrid in 1995. The goal of these courses is to give the non-specialist an introduction to some old and new ideas in the field of strongly correlated systems, in particular the problems posed by the high-1~ superconducting materials. As theoretical physicists, our starting viewpoint to address the problem of strongly correlat ed ferlnion systems and related issues of modern condensed matter physics ·is the renormalization group approach applied both to quantU111 field theory and statistical physics. In recent years this has become not only a powerful tool for retrieving the essential physics of interacting systems but also a link between theoretical physics and modern condensed matter physics. Furthermore, once we have this common background for dealing with apparently different prob lems, we discuss more specific topics and even phenomenological aspects of the field. In doing so we have tried to make the exposition clear and simple, with out entering into technical details but focusing ill the fundamental physics of the phenomena under study. Therefore ,ve expect that our experience ll1ay have some value to other people entering this fascinating field. We have divided these notes into three parts and each part into chapters, which correspond roughly to one or two lectures. Part I, Chaps. 1-2 (A. H. V.

Statistical Approach to Quantum Field Theory

Statistical Approach to Quantum Field Theory PDF Author: Andreas Wipf
Publisher: Springer Nature
ISBN: 3030832635
Category : Science
Languages : en
Pages : 568

Get Book

Book Description
This new expanded second edition has been totally revised and corrected. The reader finds two complete new chapters. One covers the exact solution of the finite temperature Schwinger model with periodic boundary conditions. This simple model supports instanton solutions – similarly as QCD – and allows for a detailed discussion of topological sectors in gauge theories, the anomaly-induced breaking of chiral symmetry and the intriguing role of fermionic zero modes. The other new chapter is devoted to interacting fermions at finite fermion density and finite temperature. Such low-dimensional models are used to describe long-energy properties of Dirac-type materials in condensed matter physics. The large-N solutions of the Gross-Neveu, Nambu-Jona-Lasinio and Thirring models are presented in great detail, where N denotes the number of fermion flavors. Towards the end of the book corrections to the large-N solution and simulation results of a finite number of fermion flavors are presented. Further problems are added at the end of each chapter in order to guide the reader to a deeper understanding of the presented topics. This book is meant for advanced students and young researchers who want to acquire the necessary tools and experience to produce research results in the statistical approach to Quantum Field Theory.

Relativistic Fluid Dynamics in and out of Equilibrium

Relativistic Fluid Dynamics in and out of Equilibrium PDF Author: Paul Romatschke
Publisher: Cambridge University Press
ISBN: 1108483682
Category : Science
Languages : en
Pages : 207

Get Book

Book Description
Presents a powerful new framework for out-of-equilibrium hydrodynamics, with connections to kinetic theory, AdS/CFT and applications to high-energy particle collisions.

Renormalization Group

Renormalization Group PDF Author: Giuseppe Benfatto
Publisher: Princeton University Press
ISBN: 0691221693
Category : Science
Languages : en
Pages : 156

Get Book

Book Description
Scaling and self-similarity ideas and methods in theoretical physics have, in the last twenty-five years, coalesced into renormalization-group methods. This book analyzes, from a single perspective, some of the most important applications: the critical-point theory in classical statistical mechanics, the scalar quantum field theories in two and three space-time dimensions, and Tomonaga's theory of the ground state of one-dimensional Fermi systems. The dimension dependence is discussed together with the related existence of anomalies (in Tomonaga's theory and in 4 -e dimensions for the critical point). The theory of Bose condensation at zero temperature in three space dimensions is also considered. Attention is focused on results that can in principle be formally established from a mathematical point of view. The 4 -e dimensions theory, Bose condensation, as well as a few other statements are exceptions to this rule, because no complete treatment is yet available. However, the truly mathematical details are intentionally omitted and only referred to. This is done with the purpose of stressing the unifying conceptual structure rather than the technical differences or subtleties.

Introduction to Quantum Field Theory with Applications to Quantum Gravity

Introduction to Quantum Field Theory with Applications to Quantum Gravity PDF Author: Iosif L. Buchbinder
Publisher: Oxford University Press, USA
ISBN: 019883831X
Category : Science
Languages : en
Pages : 536

Get Book

Book Description
This textbook presents a detailed introduction to the general concepts of quantum field theory, with special emphasis on principal aspects of functional methods and renormalization in gauge theories, and includes an introduction to semiclassical and perturbative quantum gravity in flat and curved spacetimes.

Noether Symmetries in Theories of Gravity

Noether Symmetries in Theories of Gravity PDF Author: Francesco Bajardi
Publisher: Cambridge University Press
ISBN: 100920873X
Category : Science
Languages : en
Pages : 452

Get Book

Book Description
This volume summarizes the many alternatives and extensions to Einstein's General Theory of Relativity, and shows how symmetry principles can be applied to identify physically viable models. The first part of the book establishes the foundations of classical field theory, providing an introduction to symmetry groups and the Noether theorems. A quick overview of general relativity is provided, including discussion of its successes and shortcomings, then several theories of gravity are presented and their main features are summarized. In the second part, the 'Noether Symmetry Approach' is applied to theories of gravity to identify those which contain symmetries. In the third part of the book these selected models are tested through comparison with the latest experiments and observations. This constrains the free parameters in the selected models to fit the current data, demonstrating a useful approach that will allow researchers to construct and constrain modified gravity models for further applications.

Order, Disorder And Criticality: Advanced Problems Of Phase Transition Theory - Volume 6

Order, Disorder And Criticality: Advanced Problems Of Phase Transition Theory - Volume 6 PDF Author: Yurij Holovatch
Publisher: World Scientific
ISBN: 9811216231
Category : Science
Languages : en
Pages : 294

Get Book

Book Description
This book is the sixth volume of reviews on advanced problems of phase transitions and critical phenomena, with the first five volumes appearing in 2004, 2007, 2012, 2015, and 2018. It aims to provide an overview of those aspects of criticality and related topics that have attracted much attention due to the recent contributions. The six chapters discuss criticality of complex systems, where the new, emergent properties appear via collective behaviour of simple elements. Since all complex systems involve cooperative behaviour between many interconnected components, the field of phase transitions and critical phenomena provides a very natural conceptual and methodological framework for their study.As for the previous volumes, this book is based on the review lectures that were given in Lviv (Ukraine) at the 'Ising lectures' — a traditional annual workshop on phase transitions and critical phenomena which aims to bring together scientists working in the field of phase transitions with university students and those who are interested in the topic.The level of presentation makes the book readable both for professionals and the students in the field. On a larger scale, the book may contribute to promoting and deepening studies of phase transitions and critical phenomena.

The Electron Liquid Paradigm in Condensed Matter Physics

The Electron Liquid Paradigm in Condensed Matter Physics PDF Author: G. Vignale
Publisher: IOS Press
ISBN: 1614990131
Category : Science
Languages : en
Pages : 557

Get Book

Book Description
The electron liquid paradigm is at the basis of most of our current understanding of the physical properties of electronic systems. Quite remarkably, the latter are nowadays at the intersection of the most exciting areas of science: materials science, quantum chemistry, nano-electronics, biology and quantum computation. Accordingly, its importance can hardly be overestimated. During the past 20 years the field has witnessed momentous developments, which are partly covered in this new volume. Advances in semiconductor technology have allowed the realizations of ultra-pure electron liquids whose density, unlike that of the ones spontaneously occurring in nature, can be tuned by electrical means, allowing a systematic exploration of both strongly and weakly correlated regimes. Most of these system are two- or even one-dimensional and can be coupled together in the form of multi-layers or multi-wires, opening vast observational possibilities. On the theoretical side, quantum Monte Carlo methods have allowed an essentially exact determination of the ground-state energy of the electron liquid, and have provided partial answers to the still open question of the structure of its phase diagram. Starting from the 1980s some truly revolutionary concepts have emerged, which are well represented in this volume.