Applications of the Renormalization Group Approach to Problems in Quantum Field Theory PDF Download
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Author: Ray Lynn Renken
Publisher:
ISBN:
Category : Monte Carlo method
Languages : en
Pages : 456
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Book Description
Author: Ray Lynn Renken
Publisher:
ISBN:
Category : Monte Carlo method
Languages : en
Pages : 456
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Book Description
Author: Geoffrey Robinson Golner
Publisher:
ISBN:
Category : Quantum field theory
Languages : en
Pages : 156
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Book Description
Author: Achim Schwenk
Publisher: Springer
ISBN: 3642273203
Category : Science
Languages : en
Pages : 356
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Book Description
There have been many recent and important developments based on effective field theory and the renormalization group in atomic, condensed matter, nuclear and high-energy physics. These powerful and versatile methods provide novel approaches to study complex and strongly interacting many-body systems in a controlled manner. The six extensive lectures gathered in this volume combine selected introductory and interdisciplinary presentations focused on recent applications of effective field theory and the renormalization group to many-body problems in such diverse fields as BEC, DFT, extreme matter, Fermi-liquid theory and gauge theories. Primarily aimed at graduate students and junior researchers, they offer an opportunity to explore fundamental physics across subfield boundaries at an early stage in their careers.
Author: Laurie M. Brown
Publisher: Springer Science & Business Media
ISBN: 1461227208
Category : Science
Languages : en
Pages : 187
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Book Description
The purpose of this section is to give you a sketch of how quantum field theory works, where Feynman graphs come from and why they are so useful, where the infinities come from, and how we have learned to deal with them without compromising the physical principles involved. I am purposely treating the problem at the level of the 1940s and 1950s, so as to keep the basic ideas clear and avoid the more difficult problems and more sophisticated methods of recent years. I shall relate my discussion simply to quantum electrodynamics (QED) since that is the most familiar case and the case that was in the forefront from the beginning (though in fact I shall ignore many of the special complications that have to be dealt with when you quantize a gauge field). The methods I shall be describing are applicable to all sorts of quantized fields: the detailed factors are different but the structure of the logical development isjust the same. Not surprisingly, though, the renormalization procedure breaks down if the theory in question is nonrenormalizable. Whether nonrenormalizable theories are theories at all is a matter for debate; in any case, they hold no practical interest for physicists since they are essentially unusable. Quantum electrodynamics was devised in 1927 by Dirac, less than a year after the Schrodinger equation appeared and before the Dirac equa tion for the relativistic electron had been invented.
Author: Kevin Costello
Publisher: American Mathematical Society
ISBN: 147047008X
Category : Mathematics
Languages : en
Pages : 251
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Book Description
This book tells mathematicians about an amazing subject invented by physicists and it tells physicists how a master mathematician must proceed in order to understand it. Physicists who know quantum field theory can learn the powerful methodology of mathematical structure, while mathematicians can position themselves to use the magical ideas of quantum field theory in “mathematics” itself. The retelling of the tale mathematically by Kevin Costello is a beautiful tour de force. —Dennis Sullivan This book is quite a remarkable contribution. It should make perturbative quantum field theory accessible to mathematicians. There is a lot of insight in the way the author uses the renormalization group and effective field theory to analyze perturbative renormalization; this may serve as a springboard to a wider use of those topics, hopefully to an eventual nonperturbative understanding. —Edward Witten Quantum field theory has had a profound influence on mathematics, and on geometry in particular. However, the notorious difficulties of renormalization have made quantum field theory very inaccessible for mathematicians. This book provides complete mathematical foundations for the theory of perturbative quantum field theory, based on Wilson's ideas of low-energy effective field theory and on the Batalin–Vilkovisky formalism. As an example, a cohomological proof of perturbative renormalizability of Yang–Mills theory is presented. An effort has been made to make the book accessible to mathematicians who have had no prior exposure to quantum field theory. Graduate students who have taken classes in basic functional analysis and homological algebra should be able to read this book.
Author: Misha Shifman
Publisher: World Scientific
ISBN: 9813234202
Category : Science
Languages : en
Pages : 320
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Book Description
This textbook grew out of lecture notes the author used in delivering a quantum field theory (QFT) course for students (both in high energy physics and condensed matter) who already had an initial exposure to the subject.It begins with the path integral method of quantization presented in a systematic and clear-cut manner. Perturbation theory is generalized beyond tree level, to include radiative corrections (loops). Renormalization procedures and the Wilsonian renormalization group (RG flow) are discussed, asymptotic freedom of non-Abelian gauge theories is derived, and some applications in Quantum Chromodynamics (QCD) are considered, with a brief digression into the Standard Model (SM). The SM case requires a study of the spontaneous breaking of gauge symmetry, a phenomenon which would be more appropriate to call 'Higgsing of the gauge bosons.' Other regimes attainable in gauge theories are explained as well. In the condensed matter part, the Heisenberg and Ising model are discussed. The present textbook differs from many others in that it is relatively concise and, at the same time, teaches students to carry out actual calculations which they may encounter in QFT-related applications.
Author: Richard J. Creswick
Publisher: Wiley-Interscience
ISBN:
Category : Science
Languages : en
Pages : 432
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Book Description
The renormalization group (RG) method has found applications in many areas of physics. The authors present simple RG treatments of such diverse problems as random walks, percolation, chaos and critical phenomena. Detailed introductory materials are presented in each area which makes it reasonably self–contained. The concepts of self–similarity and scale invariance are a common thread tying these problems together. Emphasis is placed on intuitive real–space RG calculations rather than formalism. The momentum–space RG is introduced and the 1/n and epsis expansions are discussed. A brief explanation of the field–theoretic approach to the RG serves as an introduction to more advanced techniques.
Author: Claus Kiefer
Publisher: OUP Oxford
ISBN: 9780199212521
Category : Science
Languages : en
Pages : 376
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Book Description
The search for a quantum theory of the gravitational field is one of the great open problems in theoretical physics. This book presents a self-contained discussion of the concepts, methods and applications that can be expected in such a theory. The two main approaches to its construction -- the direct quantisation of Einstein's general theory of relativity and string theory -- are covered. Whereas the first attempts to construct a viable theory for the gravitational field alone,string theory assumes that a quantum theory of gravity will be achieved only through a unification of all the interactions. However, both employ the general method of quantization of constrained systems, which is described together with illustrative examples relevant for quantum gravity. There is adetailed presentation of the main approaches employed in quantum general relativity: path-integral quantization, the background-field method and canonical quantum gravity in the metric, connection and loop formulations. The discussion of string theory centres around its quantum-gravitational aspects and the comparison with quantum general relativity. Physical applications discussed at length include the quantization of black holes, quantum cosmology, the indications of a discrete structure ofspacetime, and the origin of irreversibility.The second edition will add some sections on topical issues. These include loop quantum cosmology, dynamical triangulation, renormalization-group approach, primordial black holes, and information-loss problem for black holes. The second edition will also contain some pedagogical extensions.This book will be of interest to researchers and students working in relativity and gravitation, cosmology, quantum field theory and related topics. It will also be of interest to mathematicians and philosophers of science.
Author: Belal E. Baaquie
Publisher: World Scientific Publishing Company
ISBN: 9789814619226
Category : Lattice gauge theories
Languages : en
Pages : 0
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Book Description
Machine generated contents note: 1. Effective field theory, past and future / Steven Weinberg -- 2.A critical history of renormalization / Kerson Huang -- 3. Renormalization group theory, the epsilon expansion, and Ken Wilson as I knew him / Michael E. Fisher -- 4. Early memories of Ken / N.D. Mermin -- 5. Ken Wilson -- The early years / Roman Jackiw -- 6. Kenneth Wilson in Moscow / Alexander Polyakov -- 7. Wilson's renormalization group: A paradigmatic shift / Edouard Brezin -- 8. Kenneth Wilson -- renormalization and QCD / Franz Wegner -- 9. Lattice gauge theory and the large N reduction / Tohru Eguchi -- 10. The lattice gauge field Lagrangian and Hamiltonian / Belal E. Baaquie -- 11. Ken Wilson: Solving the strong interactions / Michael E. Peskin -- 12. Renormalization group approach to quantum Hamiltonian dynamics / Stanislaw D. Glazek -- 13. RG for non-relativistic fermions / R. Shankar -- 14. Gauge theories on the Coulomb branch / John H. Schwarz -- 15. Screening clouds and Majorana fermions / Domenico Giuliano -- 16. Kenneth Wilson and lattice QCD / Akira Ukawa -- 17. Skeleton graph expansion of critical exponents in "cultural revolution" years / Bailin Hao -- 18. Personal reflections on Kenneth Wilson at Princeton and Edinburgh / David Wallace -- 19. Ken Wilson -- A Tribute: Some recollections and a few thoughts on education / H.R. Krishnamurthy -- 20. Kenneth G. Wilson: Renormalized after-dinner anecdotes / Paul Ginsparg -- 21. My memory of Ken Wilson / Anthony Zee
Author: Eduardo Fradkin
Publisher: Princeton University Press
ISBN: 0691189552
Category : Science
Languages : en
Pages : 760
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Book Description
The only graduate-level textbook on quantum field theory that fully integrates perspectives from high-energy, condensed-matter, and statistical physics Quantum field theory was originally developed to describe quantum electrodynamics and other fundamental problems in high-energy physics, but today has become an invaluable conceptual and mathematical framework for addressing problems across physics, including in condensed-matter and statistical physics. With this expansion of applications has come a new and deeper understanding of quantum field theory—yet this perspective is still rarely reflected in teaching and textbooks on the subject. Developed from a year-long graduate course Eduardo Fradkin has taught for years to students of high-energy, condensed-matter, and statistical physics, this comprehensive textbook provides a fully "multicultural" approach to quantum field theory, covering the full breadth of its applications in one volume. Brings together perspectives from high-energy, condensed-matter, and statistical physics in both the main text and exercises Takes students from basic techniques to the frontiers of physics Pays special attention to the relation between measurements and propagators and the computation of cross sections and response functions Focuses on renormalization and the renormalization group, with an emphasis on fixed points, scale invariance, and their role in quantum field theory and phase transitions Other topics include non-perturbative phenomena, anomalies, and conformal invariance Features numerous examples and extensive problem sets Also serves as an invaluable resource for researchers
