101,96 € *

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Dyson Main Body, Grundgehäuse, Gehäuse für DC34 - Nr. 918400-14 Original Dyson Ersatzteilnummer: 918400-14 Passend für: DC 34 Achtung: Bei dem DC34 gibt es 3 verschiedene Grundgehäuse !!

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41,19 € *

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Dyson Main Body, Grundgehäuse, Gehäuse mit Motor für V6+ SV09 - Nr.: 967911-03 Original Dyson Ersatzteilnummer: 967911-03 Passend für: V6+ SV09

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90,93 € *

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This book is an introduction to a rapidly developing field of modern theoretical physics - the theory of quantum transport at nanoscale. The theoretical methods considered in the book are in the basis of our understanding of charge, spin and heat transport in nanostructures and nanostructured materials and are widely used in nanoelectronics, molecular electronics, spin-dependent electronics (spintronics) and bio-electronics. The book is based on lectures for graduate and post-graduate students at the University of Regensburg and the Technische Universität Dresden (TU Dresden).The first part is devoted to the basic concepts of quantum transport: Landauer-Büttiker method and matrix Green function formalism for coherent transport, Tunneling (Transfer) Hamiltonian and master equation methods for tunneling, Coulomb blockade, vibrons and polarons.The results in this part are obtained as possible without sophisticated techniques, such as nonequilibrium Green functions, which are considered in detail in the second part.A general introduction into the nonequilibrium Green function theory is given.The approach based on the equation-of-motion technique, as well as more sophisticated one based on the Dyson-Keldysh diagrammatic technique are presented. The main attention is paid to the theoretical methods able to describe the nonequilibrium (at finite voltage) electron transport through interacting nanosystems, specifically the correlation effects due to electron-electron and electron-vibron interactions.

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87,67 € *

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This textbook addresses the special physics of many-particle systems, especially those dominated by correlation effects. It develops modern methods to treat such systems and demonstrates their application through numerous appropriate exercises, mainly from the field of solid state physics. The book is written in a tutorial style appropriate for those who want to learn many-body theory and eventually to use this to do research work in this field. The exercises, together with full solutions for evaluating one's performance, help to deepen understanding of the main aspects of many-particle systems. This revised second edition presents new sections on the finite-temperature Matsubara formalism, in particular with respect to Dyson equation, the Hartree-Fock approximation, second order perturbation theory, spin density waves, Hubbard model, Jellium model, quasi particles, Fermi liquids and multi particle Matsubara functions. Completing the outstanding Theoretical Physics series, this book will be a valuable resource for advanced students and researchers alike.

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113,16 € *

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Anbieter: Dodax

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32,90 CHF *

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The volume takes stock of British Foreign and Security Policy after the first two years in office of the Conservative-Liberal Democrat coalition government. The end of the Labour era in power and the advent of the coalition government have in many ways reinvigorated the debate about the UK&#8217;s place in the world. Prominent issues in this debate include Britain&#8217;s foremost bilateral relations, its role in the EU, the main security threats facing the country as well as the British engagement in humanitarian interventions and the fight against international terrorism. On each of these questions, in turn, decision-making is heavily influenced by the presence of the past in British Foreign and Security Policy. The contributions to this volume offer in-depth analyses of major current challenges in the field and shed light on their historical context. Contributors: Klaus Brummer, Jim Buller, Oliver Daddow, Stephen Benedict Dyson, Jamie Gaskarth, Victoria Honeyman, John F. Keiger, Ursula Lehmkuhl, Tim Oliver, Roderick Parkes, Alexandra Raleigh, Alexander Spencer. Editor: Kai Oppermann is Assistant Professor of International Politics and Foreign Policy at the University of Cologne.

Anbieter: Orell Fuessli CH

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239,00 CHF *

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This volume reviews recent developments in conformal quantum field theory in emD/em-dimensions, and focuses on two main aims. br/ Firstly, the promising trend is followed toward constructing an exact solution for a certain class of models. Work on the conformal Ward identities in a emD/em-dimensional space in the late '70s suggests a parallel with the null-vectors which determine the minimal models in the two-dimensional field theory. Recent research has also indicated the possible existence of an infinite parameter algebra analogous to the Virasoro algebra in spaces of higher dimensions emD/em=3. Each of these models contains parameters similar to the central charge of the two-dimensional theory, due to special fields which occur in the commutator of the components of the energy-momentum tensor. As a first step, a special formalism is suggested which allows finding an exact solution of these models for any space dimension. Then it is shown that in each model closed differential equations can be obtained for higher correlators, as well as the algebraic equations for scale dimensions of fields, and dimensionless parameters similar to the central charge. br/ Secondly, this work aims to give a survey of some special aspects of conformal quantum field theory in emD/em-dimensional space. Included are the survey of conformal methods of approximate calculation of critical indices in a three-dimensional space, an analysis and solution of a renormalised system of Schwinger-Dyson equations, a derivation of partial wave expansions, among other topics. Special attention is given to the development of the apparatus of quantum conform theory of gauge fields. br/ emAudience:/em This book will be of interest to graduate students and researchers whose work involves quantum field theory.

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39,90 CHF *

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How did life on earth originate? Did replication or metabolism come first in the history of life? In this updated and expanded second edition of Origins of Life, Freeman Dyson examines these questions and discusses the two main theories that try to explain how naturally occurring chemicals could organize themselves into living creatures.

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137,90 CHF *

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This book is an introduction to a rapidly developing field of modern theoretical physics - the theory of quantum transport at nanoscale. The theoretical methods considered in the book are in the basis of our understanding of charge, spin and heat transport in nanostructures and nanostructured materials and are widely used in nanoelectronics, molecular electronics, spin-dependent electronics (spintronics) and bio-electronics. The book is based on lectures for graduate and post-graduate students at the University of Regensburg and the Technische Universität Dresden (TU Dresden). The first part is devoted to the basic concepts of quantum transport: Landauer-Büttiker method and matrix Green function formalism for coherent transport, Tunneling (Transfer) Hamiltonian and master equation methods for tunneling, Coulomb blockade, vibrons and polarons. The results in this part are obtained as possible without sophisticated techniques, such as nonequilibrium Green functions, which are considered in detail in the second part. A general introduction into the nonequilibrium Green function theory is given.The approach based on the equation-of-motion technique, as well as more sophisticated one based on the Dyson-Keldysh diagrammatic technique are presented. The main attention is paid to the theoretical methods able to describe the nonequilibrium (at finite voltage) electron transport through interacting nanosystems, specifically the correlation effects due to electron-electron and electron-vibron interactions.

Anbieter: Orell Fuessli CH

Stand: 01.10.2020 Zum Angebot

Stand: 01.10.2020 Zum Angebot