Bosonization of Interacting Fermions in Arbitrary Dimensions

Bosonization of Interacting Fermions in Arbitrary Dimensions PDF Author: Peter Kopietz
Publisher: Springer Science & Business Media
ISBN: 3540684956
Category : Science
Languages : en
Pages : 263

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Book Description
The author presents in detail a new non-perturbative approach to the fermionic many-body problem, improving the bosonization technique and generalizing it to dimensions d1 via functional integration and Hubbard--Stratonovich transformations. In Part I he clearly illustrates the approximations and limitations inherent in higher-dimensional bosonization and derives the precise relation with diagrammatic perturbation theory. He shows how the non-linear terms in the energy dispersion can be systematically included into bosonization in arbitrary d, so that in d1 the curvature of the Fermi surface can be taken into account. Part II gives applications to problems of physical interest. The book addresses researchers and graduate students in theoretical condensed matter physics.

Bosonization of Interacting Fermions in Arbitrary Dimensions

Bosonization of Interacting Fermions in Arbitrary Dimensions PDF Author: Peter Kopietz
Publisher: Springer Science & Business Media
ISBN: 3540684956
Category : Science
Languages : en
Pages : 263

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Book Description
The author presents in detail a new non-perturbative approach to the fermionic many-body problem, improving the bosonization technique and generalizing it to dimensions d1 via functional integration and Hubbard--Stratonovich transformations. In Part I he clearly illustrates the approximations and limitations inherent in higher-dimensional bosonization and derives the precise relation with diagrammatic perturbation theory. He shows how the non-linear terms in the energy dispersion can be systematically included into bosonization in arbitrary d, so that in d1 the curvature of the Fermi surface can be taken into account. Part II gives applications to problems of physical interest. The book addresses researchers and graduate students in theoretical condensed matter physics.

Bosonization of Interacting Fermions in Arbitrary Dimensions

Bosonization of Interacting Fermions in Arbitrary Dimensions PDF Author: Peter Kopietz
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description


Introduction to the Functional Renormalization Group

Introduction to the Functional Renormalization Group PDF Author: Peter Kopietz
Publisher: Springer Science & Business Media
ISBN: 364205093X
Category : Language Arts & Disciplines
Languages : en
Pages : 383

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Book Description
This book, based on a graduate course given by the authors, is a pedagogic and self-contained introduction to the renormalization group with special emphasis on the functional renormalization group. The functional renormalization group is a modern formulation of the Wilsonian renormalization group in terms of formally exact functional differential equations for generating functionals. In Part I the reader is introduced to the basic concepts of the renormalization group idea, requiring only basic knowledge of equilibrium statistical mechanics. More advanced methods, such as diagrammatic perturbation theory, are introduced step by step. Part II then gives a self-contained introduction to the functional renormalization group. After a careful definition of various types of generating functionals, the renormalization group flow equations for these functionals are derived. This procedure is shown to encompass the traditional method of the mode elimination steps of the Wilsonian renormalization group procedure. Then, approximate solutions of these flow equations using expansions in powers of irreducible vertices or in powers of derivatives are given. Finally, in Part III the exact hierarchy of functional renormalization group flow equations for the irreducible vertices is used to study various aspects of non-relativistic fermions, including the so-called BCS-BEC crossover, thereby making the link to contemporary research topics.

Self-consistent Quantum-Field Theory and Bosonization for Strongly Correlated Electron Systems

Self-consistent Quantum-Field Theory and Bosonization for Strongly Correlated Electron Systems PDF Author: Rudolf Haussmann
Publisher: Springer Science & Business Media
ISBN: 3540489363
Category : Science
Languages : en
Pages : 181

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Book Description
This research monograph offers an introduction to advanced quantum field theoretical techniques for many-particle systems beyond perturbation theory. Several schemes for resummation of the Feynman diagrams are described. The resulting approximations are especially well suited for strongly correlated fermion and boson systems. Also considered is the crossover from BCS superconductivity to Bose--Einstein condensation in fermion systems with strong attractive interaction. In particular, a field theoretic formulation of "bosonization" is presented; it is published here for the first time. This method is applied to the fractional quantum Hall effect, to the Coulomb plasma, and to several exactly solvable models.

35 Years Of Condensed Matter And Related Physics - Proceedings Of The Raymond L Orbach Symposium

35 Years Of Condensed Matter And Related Physics - Proceedings Of The Raymond L Orbach Symposium PDF Author: Daniel W Hone
Publisher: World Scientific
ISBN: 9814547271
Category :
Languages : en
Pages : 146

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Book Description
The 9 papers of this volume were presented at the March 1995 Symposium honoring Raymond L Orbach on his 60th birthday. The range of topics reflects the breadth of Dr Orbach's own research. It includes magnetism and transport in nanostructures, crystal fields in superconducting cuprates, fractons and scaling in disordered systems, glassy relaxation, inelastic atom-crystal scattering, bosonization in d > 1, and microwave effects in superconductors.

Dynamics of Classical and Quantum Fields

Dynamics of Classical and Quantum Fields PDF Author: Girish S. Setlur
Publisher: Taylor & Francis
ISBN: 1466556285
Category : Science
Languages : en
Pages : 391

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Book Description
Dynamics of Classical and Quantum Fields: An Introduction focuses on dynamical fields in non-relativistic physics. Written by a physicist for physicists, the book is designed to help readers develop analytical skills related to classical and quantum fields at the non-relativistic level, and think about the concepts and theory through numerous problems. In-depth yet accessible, the book presents new and conventional topics in a self-contained manner that beginners would find useful. A partial list of topics covered includes: Geometrical meaning of Legendre transformation in classical mechanics Dynamical symmetries in the context of Noether’s theorem The derivation of the stress energy tensor of the electromagnetic field, the expression for strain energy in elastic bodies, and the Navier Stokes equation Concepts of right and left movers in case of a Fermi gas explained Functional integration is interpreted as a limit of a sequence of ordinary integrations Path integrals for one and two quantum particles and for a fermion in presence of a filled Fermi sea Fermion and boson Fock spaces, along with operators that create and annihilate particles Coherent state path integrals Many-body topics such as Schrieffer Wolff transformation, Matsubara, and Keldysh Green functions Geometrical meaning of the vortex-vortex correlation function in a charged boson fluid Nonlocal particle-hole creation operators which diagonalize interacting many-body systems The equal mix of novel and traditional topics, use of fresh examples to illustrate conventional concepts, and large number of worked examples make this book ideal for an intensive one-semester course for beginning Ph.D. students. It is also a challenging and thought provoking book for motivated advanced undergraduates.

Composite Fermions, A Unified View Of The Quantum Hall Regime

Composite Fermions, A Unified View Of The Quantum Hall Regime PDF Author: Olle G Heinonen
Publisher: World Scientific
ISBN: 9814495727
Category : Science
Languages : en
Pages : 504

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Book Description
One of the most exciting recent developments to have emerged from the quantum Hall effect is the subject of composite fermions. This important volume gives a self-contained, comprehensive description of the subject, including fundamentals, more advanced theoretical work, and results from experimental observations of composite fermions.

Bosonization

Bosonization PDF Author: Michael Stone
Publisher: World Scientific
ISBN: 981450176X
Category : Science
Languages : en
Pages : 552

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Book Description
Bosonization is a useful technique for studying systems of interacting fermions in low dimensions. It has applications in both particle and condensed matter physics.This book contains reprints of papers on the method as used in these fields. The papers range from the classic work of Tomonaga in the 1950's on one-dimensional electron gases, through the discovery of fermionic solitons in the 1970's, to integrable systems and bosonization on Riemann surfaces. A four-chapter pedagogical introduction by the editor should make the book accessible to graduate students and experienced researchers alike.

Luttinger Model

Luttinger Model PDF Author: Vieri Mastropietro
Publisher: World Scientific
ISBN: 9814520721
Category : Science
Languages : en
Pages : 312

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Book Description
The Luttinger Model is the only model of many-fermion physics with legitimate claims to be both exactly and completely solvable. In several respects it plays the same role in many-body theory as does the 2D Ising model in statistical physics. Interest in the Luttinger model has increased steadily ever since its introduction half a century ago. The present volume starts with reprints of the seminal papers in which it was originally introduced and solved, and continues with several contributions setting out the landscape of the principal advances of the last fifty years and of prominent new directions.

A Perspective Look at Nonlinear Media

A Perspective Look at Nonlinear Media PDF Author: Jürgen Parisi
Publisher: Springer Science & Business Media
ISBN: 9783540639954
Category : Science
Languages : en
Pages : 394

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Book Description
Concepts of nonlinear physics are applied to an increasing number of research disciplines. With this volume, the editors offer a selection of articles on nonlinear topics in progress, ranging from physics and chemistry to biology and some applications of social science. The book covers quantum optics, electron crystallization, cellular or flow patterns in fluids and in granular media, biological systems, and the control of brain structures via neuronal excitation. Chemical patterns are looked at both in bulk solutions and on surfaces in heterogeneous systems. From regular structures, the authors turn to the more complex behavior in biology and physics, such as hydrodynamical turbulence, low-dimensional dynamics in solid-state physics, and gravity.