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Perturbative Quantum Electrodynamics And Axiomatic Field Theory
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Book Synopsis Perturbative Quantum Electrodynamics and Axiomatic Field Theory by : Othmar Steinmann
Download or read book Perturbative Quantum Electrodynamics and Axiomatic Field Theory written by Othmar Steinmann and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: This novel approach is presented for the first time in book form. The author demonstrates that fundamental concepts and methods from phenomenological particle physics can be derived rigorously from well-defined general assumptions in a mathematically clean way.
Book Synopsis From Classical Field Theory to Perturbative Quantum Field Theory by : Michael Dütsch
Download or read book From Classical Field Theory to Perturbative Quantum Field Theory written by Michael Dütsch and published by Springer. This book was released on 2019-03-18 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book develops a novel approach to perturbative quantum field theory: starting with a perturbative formulation of classical field theory, quantization is achieved by means of deformation quantization of the underlying free theory and by applying the principle that as much of the classical structure as possible should be maintained. The resulting formulation of perturbative quantum field theory is a version of the Epstein-Glaser renormalization that is conceptually clear, mathematically rigorous and pragmatically useful for physicists. The connection to traditional formulations of perturbative quantum field theory is also elaborated on, and the formalism is illustrated in a wealth of examples and exercises.
Book Synopsis Finite Quantum Electrodynamics by : Gunter Scharf
Download or read book Finite Quantum Electrodynamics written by Gunter Scharf and published by Courier Corporation. This book was released on 2014-04-23 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of this classic graduate-level physics text covers relativistic quantum mechanics, field quantization, causal perturbation theory, properties of the S-matrix, and considerations of other electromagnetic couplings. 2014 edition.
Book Synopsis From Classical Field Theory to Perturbative Quantum Field Theory by : Michael Dütsch
Download or read book From Classical Field Theory to Perturbative Quantum Field Theory written by Michael Dütsch and published by Birkhäuser. This book was released on 2019-02-26 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book develops a novel approach to perturbative quantum field theory: starting with a perturbative formulation of classical field theory, quantization is achieved by means of deformation quantization of the underlying free theory and by applying the principle that as much of the classical structure as possible should be maintained. The resulting formulation of perturbative quantum field theory is a version of the Epstein-Glaser renormalization that is conceptually clear, mathematically rigorous and pragmatically useful for physicists. The connection to traditional formulations of perturbative quantum field theory is also elaborated on, and the formalism is illustrated in a wealth of examples and exercises.
Book Synopsis Perturbative Algebraic Quantum Field Theory by : Kasia Rejzner
Download or read book Perturbative Algebraic Quantum Field Theory written by Kasia Rejzner and published by Springer. This book was released on 2016-03-16 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Perturbative Algebraic Quantum Field Theory (pAQFT), the subject of this book, is a complete and mathematically rigorous treatment of perturbative quantum field theory (pQFT) that doesn’t require the use of divergent quantities and works on a large class of Lorenzian manifolds. We discuss in detail the examples of scalar fields, gauge theories and the effective quantum gravity. pQFT models describe a wide range of physical phenomena and have remarkable agreement with experimental results. Despite this success, the theory suffers from many conceptual problems. pAQFT is a good candidate to solve many, if not all, of these conceptual problems. Chapters 1-3 provide some background in mathematics and physics. Chapter 4 concerns classical theory of the scalar field, which is subsequently quantized in chapters 5 and 6. Chapter 7 covers gauge theory and chapter 8 discusses effective quantum gravity. The book aims to be accessible to researchers and graduate students, who are interested in the mathematical foundations of pQFT.
Book Synopsis From Classical Field Theory to Perturbative Quantum Field Theory by : Michael Dütsch
Download or read book From Classical Field Theory to Perturbative Quantum Field Theory written by Michael Dütsch and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This book develops a novel approach to perturbative quantum field theory: starting with a perturbative formulation of classical field theory, quantization is achieved by means of deformation quantization of the underlying free theory and by applying the principle that as much of the classical structure as possible should be maintained. The resulting formulation of perturbative quantum field theory is a version of the Epstein-Glaser renormalization that is conceptually clear, mathematically rigorous and pragmatically useful for physicists. The connection to traditional formulations of perturbative quantum field theory is also elaborated on, and the formalism is illustrated in a wealth of examples and exercises.
Book Synopsis Condensed Matter Field Theory by : Alexander Altland
Download or read book Condensed Matter Field Theory written by Alexander Altland and published by Cambridge University Press. This book was released on 2010-03-11 with total page 785 pages. Available in PDF, EPUB and Kindle. Book excerpt: This primer is aimed at elevating graduate students of condensed matter theory to a level where they can engage in independent research. Topics covered include second quantisation, path and functional field integration, mean-field theory and collective phenomena.
Book Synopsis An Introduction To Quantum Field Theory by : Michael E. Peskin
Download or read book An Introduction To Quantum Field Theory written by Michael E. Peskin and published by CRC Press. This book was released on 2018-05-04 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt: An Introduction to Quantum Field Theory is a textbook intended for the graduate physics course covering relativistic quantum mechanics, quantum electrodynamics, and Feynman diagrams. The authors make these subjects accessible through carefully worked examples illustrating the technical aspects of the subject, and intuitive explanations of what is going on behind the mathematics. After presenting the basics of quantum electrodynamics, the authors discuss the theory of renormalization and its relation to statistical mechanics, and introduce the renormalization group. This discussion sets the stage for a discussion of the physical principles that underlie the fundamental interactions of elementary particle physics and their description by gauge field theories.
Book Synopsis Quantum Field Theory II: Quantum Electrodynamics by : Eberhard Zeidler
Download or read book Quantum Field Theory II: Quantum Electrodynamics written by Eberhard Zeidler and published by Springer Science & Business Media. This book was released on 2008-09-03 with total page 1125 pages. Available in PDF, EPUB and Kindle. Book excerpt: And God said, Let there be light; and there was light. Genesis 1,3 Light is not only the basis of our biological existence, but also an essential source of our knowledge about the physical laws of nature, ranging from the seventeenth century geometrical optics up to the twentieth century theory of general relativity and quantum electrodynamics. Folklore Don’t give us numbers: give us insight! A contemporary natural scientist to a mathematician The present book is the second volume of a comprehensive introduction to themathematicalandphysicalaspectsofmodernquantum?eldtheorywhich comprehends the following six volumes: Volume I: Basics in Mathematics and Physics Volume II: Quantum Electrodynamics Volume III: Gauge Theory Volume IV: Quantum Mathematics Volume V: The Physics of the Standard Model Volume VI: Quantum Gravitation and String Theory. It is our goal to build a bridge between mathematicians and physicists based on the challenging question about the fundamental forces in • macrocosmos (the universe) and • microcosmos (the world of elementary particles). The six volumes address a broad audience of readers, including both und- graduate and graduate students, as well as experienced scientists who want to become familiar with quantum ?eld theory, which is a fascinating topic in modern mathematics and physics.
Book Synopsis Quantum Field Theory by : Claude Itzykson
Download or read book Quantum Field Theory written by Claude Itzykson and published by Courier Corporation. This book was released on 2012-09-20 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive text begins with the standard quantization of electrodynamics and perturbative renormalization, advancing to functional methods, relativistic bound states, broken symmetries, nonabelian gauge fields, and asymptotic behavior. 1980 edition.
Book Synopsis An Introduction to Non-Perturbative Foundations of Quantum Field Theory by : Franco Strocchi
Download or read book An Introduction to Non-Perturbative Foundations of Quantum Field Theory written by Franco Strocchi and published by OUP Oxford. This book was released on 2013-02-14 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum Field Theory (QFT) has proved to be the most useful strategy for the description of elementary particle interactions and as such is regarded as a fundamental part of modern theoretical physics. In most presentations, the emphasis is on the effectiveness of the theory in producing experimentally testable predictions, which at present essentially means Perturbative QFT. However, after more than fifty years of QFT, we still are in the embarrassing situation of not knowing a single non-trivial (even non-realistic) model of QFT in 3+1 dimensions, allowing a non-perturbative control. As a reaction to these consistency problems one may take the position that they are related to our ignorance of the physics of small distances and that QFT is only an effective theory, so that radically new ideas are needed for a consistent quantum theory of relativistic interactions (in 3+1 dimensions). The book starts by discussing the conflict between locality or hyperbolicity and positivity of the energy for relativistic wave equations, which marks the origin of quantum field theory, and the mathematical problems of the perturbative expansion (canonical quantization, interaction picture, non-Fock representation, asymptotic convergence of the series etc.). The general physical principles of positivity of the energy, Poincare' covariance and locality provide a substitute for canonical quantization, qualify the non-perturbative foundation and lead to very relevant results, like the Spin-statistics theorem, TCP symmetry, a substitute for canonical quantization, non-canonical behaviour, the euclidean formulation at the basis of the functional integral approach, the non-perturbative definition of the S-matrix (LSZ, Haag-Ruelle-Buchholz theory). A characteristic feature of gauge field theories is Gauss' law constraint. It is responsible for the conflict between locality of the charged fields and positivity, it yields the superselection of the (unbroken) gauge charges, provides a non-perturbative explanation of the Higgs mechanism in the local gauges, implies the infraparticle structure of the charged particles in QED and the breaking of the Lorentz group in the charged sectors. A non-perturbative proof of the Higgs mechanism is discussed in the Coulomb gauge: the vector bosons corresponding to the broken generators are massive and their two point function dominates the Goldstone spectrum, thus excluding the occurrence of massless Goldstone bosons. The solution of the U(1) problem in QCD, the theta vacuum structure and the inevitable breaking of the chiral symmetry in each theta sector are derived solely from the topology of the gauge group, without relying on the semiclassical instanton approximation.
Book Synopsis Quantum Field Theory by : Mark Srednicki
Download or read book Quantum Field Theory written by Mark Srednicki and published by Cambridge University Press. This book was released on 2007-01-25 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantum field theory is the basic mathematical framework that is used to describe elementary particles. This textbook provides a complete and essential introduction to the subject. Assuming only an undergraduate knowledge of quantum mechanics and special relativity, this book is ideal for graduate students beginning the study of elementary particles. The step-by-step presentation begins with basic concepts illustrated by simple examples, and proceeds through historically important results to thorough treatments of modern topics such as the renormalization group, spinor-helicity methods for quark and gluon scattering, magnetic monopoles, instantons, supersymmetry, and the unification of forces. The book is written in a modular format, with each chapter as self-contained as possible, and with the necessary prerequisite material clearly identified. It is based on a year-long course given by the author and contains extensive problems, with password protected solutions available to lecturers at www.cambridge.org/9780521864497.
Book Synopsis Quantum Field Theory on Curved Spacetimes by : Christian Bär
Download or read book Quantum Field Theory on Curved Spacetimes written by Christian Bär and published by Springer. This book was released on 2009-09-18 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: After some decades of work a satisfactory theory of quantum gravity is still not available; moreover, there are indications that the original field theoretical approach may be better suited than originally expected. There, to first approximation, one is left with the problem of quantum field theory on Lorentzian manifolds. Surprisingly, this seemingly modest approach leads to far reaching conceptual and mathematical problems and to spectacular predictions, the most famous one being the Hawking radiation of black holes. Ingredients of this approach are the formulation of quantum physics in terms of C*-algebras, the geometry of Lorentzian manifolds, in particular their causal structure, and linear hyperbolic differential equations where the well-posedness of the Cauchy problem plays a distinguished role, as well as more recently the insights from suitable concepts such as microlocal analysis. This primer is an outgrowth of a compact course given by the editors and contributing authors to an audience of advanced graduate students and young researchers in the field, and assumes working knowledge of differential geometry and functional analysis on the part of the reader.
Book Synopsis Nonperturbative Quantum Field Theory by : G. Hooft
Download or read book Nonperturbative Quantum Field Theory written by G. Hooft and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 603 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past 15 years, quantum field theory and classical statistical mechanics have merged into a single field, and the need for nonperturbative methods for the description of critical phenomena in statistical mechanics as well as for problems in elementary particle physics are generally acknowledged. Such methods formed the central theme of the 1987 Cargese Advanced Study Institut. e on "Nonpert. urbat. ive Quantum Field Theory." The use of conformal symmet. ry has been of central interest in recent years, and was a main subject at. t. he ASI. Conformal invariant quantum field theory describes statistical mechanical systems exactly at a critical point, and can be analysed to a remarkable ext. ent. by group t. heoretical methods. Very strong results have been obtained for 2-dimensional systems. Conformal field theory is also the basis of string theory, which offers some hope of providing a unified t. heory of all interactions between elementary particles. Accordingly, a number of lectures and seminars were presented on these two topics. After syst. ematic introductory lectures, conformal field theory on Riemann surfaces, orbifolds, sigma models, and application of loop group theory and Grassmannians were discussed, and some ideas on modular geometry were presented. Other lectures combined' traditional techniques of constructive quant. um field theory with new methods such as the use of index-t. heorems and infinite dimensional (Kac Moody) symmetry groups. The problems encountered in a quantum mechanical description of black holes were discussed in detail.
Book Synopsis The Conceptual Framework of Quantum Field Theory by : Anthony Duncan
Download or read book The Conceptual Framework of Quantum Field Theory written by Anthony Duncan and published by Oxford University Press. This book was released on 2012-08-09 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The book attempts to provide an introduction to quantum field theory emphasizing conceptual issues frequently neglected in more "utilitarian" treatments of the subject. The book is divided into four parts, entitled respectively "Origins", "Dynamics", "Symmetries", and "Scales". The emphasis is conceptual - the aim is to build the theory up systematically from some clearly stated foundational concepts - and therefore to a large extent anti-historical, but two historical Chapters ("Origins") are included to situate quantum field theory in the larger context of modern physical theories. The three remaining sections of the book follow a step by step reconstruction of this framework beginning with just a few basic assumptions: relativistic invariance, the basic principles of quantum mechanics, and the prohibition of physical action at a distance embodied in the clustering principle. The "Dynamics" section of the book lays out the basic structure of quantum field theory arising from the sequential insertion of quantum-mechanical, relativistic and locality constraints. The central role of symmetries in relativistic quantum field theories is explored in the third section of the book, while in the final section, entitled "Scales", we explore in detail the feature of quantum field theories most critical for their enormous phenomenological success - the scale separation property embodied by the renormalization group properties of a theory defined by an effective local Lagrangian.
Book Synopsis Quantum Electrodynamics with Unstable Vacuum by : Vitaliĭ Lazarevich Ginzburg
Download or read book Quantum Electrodynamics with Unstable Vacuum written by Vitaliĭ Lazarevich Ginzburg and published by Nova Biomedical Books. This book was released on 1995 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Problems of quantum field theory with unstable vacuum are considered. In the case of quantum electrodynamics, the vacuum unstability is connected with the possibility of pair creating by external electromagnetic fields already in zeroth order with respect to the radiation interaction. The perturbation theory is constructed, for which the interaction with the external field is kept exact. Exact Green functions are introduced and the functional formulation is discussed. Perturbation theory for calculating the mean values of the Heisenberg operators and the total probabilities of radiating processes is built in the case under consideration. All results referring to the relations of the optical theorem for the external fields with unstable vacuum are presented. All these particularities are demonstrated for concrete external fields. Problems of the quantum electrodynamics at finite temperature are considered.
Book Synopsis Renormalization by : Damiano Anselmi
Download or read book Renormalization written by Damiano Anselmi and published by Independently Published. This book was released on 2019-05-16 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Course on renormalization - Functional integral, Dimensional regularization, Feynman diagrams, Renormalization, Renormalization group, Gauge symmetry, Canonical formalism, Quantum electrodynamics, Non-Abelian gauge field theories - Most modern high-energy physics, including the standard model of particle physics, is formulated by means of perturbative quantum field theory.When the perturbative expansion is performed in a naive way, it generates "divergences'', that is to say quantities that appear to be "infinite'', instead of being small. Typically, they are due to diverging improper integrals. The presence of divergences suggests that it should be possible to define the perturbative expansion in a smarter way.With the help of a cutoff, divergences become temporarily finite. Then they can be classified and moved around. Clearly, if a divergence disappears by changing the parametrization of the theory, it is not a true divergence, but just a blunder due to an unfortunate choice of variables. If there exists a reparametrization that makes all the divergences disappear, then the theory is actually convergent.Divergences can be relocated by performing all sorts of operations that in normal circumstances leave the physics unchanged, such as changes of field variables, as well as redefinitions of the parameters, in particular the coupling constants. Renormalization is the reparametrization that moves the divergences "to the right places'', assuming that such places do exist. In simple theories, fields and couplings just get multiplied by constants, whence the name re-normalization. In more complicated situations the redefinitions can even be nonpolynomial. Once the theory is renormalized, the cutoff can be safely removed, and the physical quantities become meaningful.The reparametrization solves the problem of divergences, and allows us to define the correct perturbative expansion. Under certain, rather general, assumptions it is always possible to absorb the divergences into reparametrizations. However, the price can be considerably high: the introduction of infinitely many new independent parameters. If the divergences can be cancelled by keeping the number of independent parameters finite the theory is called renormalizable. The renormalizable theories acquire a very special status among all theories.Renormalizability provides a way to select the theories. This selection is actually welcome, since it gives us a reason to discard a huge set of theories that otherwise would have to be a priori included. Among other things, no physical theory in more than four spacetime dimensions survives the selection, which makes renormalization a good candidate to explain why we live in four dimensions. The set of renormalizable theories contains the standard model in flat space. Therefore, it allows us to explain three interactions of nature out of four. Ironically, the "divergences'' are the best known quantities of quantum field theory, to the extent that certain physical amplitudes can be calculated exactly to all orders.The book contains the basic notions of renormalization. The main goals are to construct perturbative quantum field theory, study the consequences of renormalization, and show that the perturbative formulation of a wide class of quantum field theories, which includes the standard model coupled to quantum gravity, is consistent to all orders. Most issues are treated using modern techniques, privileging the most economical and powerful tools. On the contrary, not much effort is devoted to explain how such a successful theoretical framework has emerged historically. Some aspects of quantum field theory are very involved, and those who study the matter for the first time can greatly benefit from the rational, non historical approach of this book.
