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This first full-length biography of Paul Adrien Maurice Dirac offers a comprehensive account of his physics in its historical context, including less known areas such as cosmology and classical electron theory. It is based extensively on unpublished sources, including Dirac's correspondence with Bohr, Heisenberg, Pauli, Schrödinger, Gamow and others. Dirac was undoubtedly one of the most brilliant and influential physicists of the twentieth century. Between 1925 and 1934, the Nobel Prize laureate revolutionized physics with his brilliant contributions to quantum theory. This work examines Dirac's successes and failures, and pays particular attention to his opposition to modern quantum electrodynamics; an opposition based on aesthetic objections.

This first full-length biography of Paul Adrien Maurice Dirac offers a comprehensive account of his physics in its historical context, including less known areas such as cosmology and classical electron theory. It is based extensively on unpublished sources, including Dirac's correspondence with Bohr, Heisenberg, Pauli, Schrödinger, Gamow and others. Dirac was undoubtedly one of the most brilliant and influential physicists of the twentieth century. Between 1925 and 1934, the Nobel Prize laureate revolutionized physics with his brilliant contributions to quantum theory. This work examines Dirac's successes and failures, and pays particular attention to his opposition to modern quantum electrodynamics; an opposition based on aesthetic objections.

Paul Adrien Maurice Dirac was one of the founders of quantum theory. He is numbered alongside Newton, Maxwell and Einstein as one of the greatest physicists of all time. Together the lectures in this volume, originally presented on the occasion of the dedication ceremony for a plaque honoring Dirac in Westminster Abbey, give a unique insight into the relationship between Dirac's character and his scientific achievements. The text begins with the dedication address given by Stephen Hawking at the ceremony. Then Abraham Pais describes Dirac as a person and his approach to his work. Maurice Jacob explains how Dirac was led to introduce the concept of antimatter, and its central role in modern particle physics and cosmology. This is followed by David Olive's account of the origin and enduring influence of Dirac's work on magnetic monopoles. Finally, Sir Michael Atiyah explains the deep and widespread significance of the Dirac equation in mathematics.

Paul Adrien Maurice Dirac was one of the founders of quantum theory. He is numbered alongside Newton, Maxwell and Einstein as one of the greatest physicists of all time. Together the lectures in this volume, originally presented on the occasion of the dedication ceremony for a plaque honoring Dirac in Westminster Abbey, give a unique insight into the relationship between Dirac's character and his scientific achievements. The text begins with the dedication address given by Stephen Hawking at the ceremony. Then Abraham Pais describes Dirac as a person and his approach to his work. Maurice Jacob explains how Dirac was led to introduce the concept of antimatter, and its central role in modern particle physics and cosmology. This is followed by David Olive's account of the origin and enduring influence of Dirac's work on magnetic monopoles. Finally, Sir Michael Atiyah explains the deep and widespread significance of the Dirac equation in mathematics.

Paul Adrien Maurice Dirac was one of the founders of quantum theory. He is numbered alongside Newton, Maxwell and Einstein as one of the greatest physicists of all time. Together the lectures in this volume, originally presented on the occasion of the dedication ceremony for a plaque honoring Dirac in Westminster Abbey, give a unique insight into the relationship between Dirac's character and his scientific achievements. The text begins with the dedication address given by Stephen Hawking at the ceremony. Then Abraham Pais describes Dirac as a person and his approach to his work. Maurice Jacob explains how Dirac was led to introduce the concept of antimatter, and its central role in modern particle physics and cosmology. This is followed by David Olive's account of the origin and enduring influence of Dirac's work on magnetic monopoles. Finally, Sir Michael Atiyah explains the deep and widespread significance of the Dirac equation in mathematics.

In the first edition of this book, simple proofs of the Atiyah-Singer Index Theorem for Dirac operators on compact Riemannian manifolds and its generalizations (due to the authors and J.-M. Bismut) were presented, using an explicit geometric construction of the heat kernel of a generalized Dirac operator; the new edition makes this popular book available to students and researchers in an attractive paperback.

In the first edition of this book, simple proofs of the Atiyah-Singer Index Theorem for Dirac operators on compact Riemannian manifolds and its generalizations (due to the authors and J.-M. Bismut) were presented, using an explicit geometric construction of the heat kernel of a generalized Dirac operator; the new edition makes this popular book available to students and researchers in an attractive paperback.

The main focus of this book is on the interconnection of two unorthodox scientific ideas, the varying-gravity hypothesis and the expanding-earth hypothesis. As such, it provides a fascinating insight into a nearly forgotten chapter in both the history of cosmology and the history of the earth sciences.The hypothesis that the force of gravity decreases over cosmic time was first proposed by Paul Dirac in 1937. In this book the author examines in detail the historical development of Dirac’s hypothesis and its consequences for the structure and history of the earth, the most important of which was that the earth must have been smaller in the past.

Unread book in perfect condition.

The main focus of this book is on the interconnection of two unorthodox scientific ideas, the varying-gravity hypothesis and the expanding-earth hypothesis. As such, it provides a fascinating insight into a nearly forgotten chapter in both the history of cosmology and the history of the earth sciences.The hypothesis that the force of gravity decreases over cosmic time was first proposed by Paul Dirac in 1937. In this book the author examines in detail the historical development of Dirac’s hypothesis and its consequences for the structure and history of the earth, the most important of which was that the earth must have been smaller in the past.

Developing a theory that seamlessly combines relativity and quantum mechanics, the most important conceptual breakthroughs in twentieth century physics, has proved to be a difficult and ongoing challenge. This book details how two distinguished physicists and Nobel laureates have explored this theme in two lectures given in Cambridge, England, in 1986 to commemorate the famous British physicist Paul Dirac. Given for nonspecialists and undergraduates, the talks transcribed in Elementary Particles and the Laws of Physics focus on the fundamental problems of physics and the present state of our knowledge. Professor Feynman examines the nature of antiparticles, and in particular the relationship between quantum spin and statistics. Professor Weinberg speculates on how Einstein's theory of gravitation might be reconciled with quantum theory in the final law of physics. Highly accessible, deeply thought provoking, this book will appeal to all those interested in the development of modern physics.

This is an expanded version of the third Dirac Memorial Lecture, given in 1988 by the Nobel Laureate Abdus Salam. Salam's lecture presents an overview of the developments in modern particle physics from its inception at the turn of the century to the present theories seeking to unify all the fundamental forces. In addition, two previously unpublished lectures by Paul Dirac, and Werner Heisenberg are included. These lectures provide a fascinating insight into their approach to research and the developments in particle physics at that time. Nonspecialists, undergraduates and researchers will find this a fascinating book. It contains a clear introduction to the major themes of particle physics and cosmology by one of the most distinguished contemporary physicists.

First Ever Sound Bar with Dirac LiveWe're changing the game again. The Klipsch Flexus Core 300 Dolby Atmos Sound System (Powered by Onkyo) is the first ever sound bar to feature Dirac Live Room Correction to completely optimize your home into the ultimate listening experience with lifelike surround sound, awe-inspiring bass and precision acoustics.The Flexus Core 300 sits atop the Flexus Series range, above the Core 200 and Core 100 introduced earlier this year. Offering an unparalleled audio experience with its immersive Dolby Atmos and DTS:X presentation, the Core 300 features two 2.25-inch up-firing and two 2.25-inch side-firing drivers, complemented by four front-firing 2.25-inch meticulously tuned by expert acousticians. With its four 4-inch built-in subwoofers, the Core 300 delivers powerful bass from a relatively small footprint. Additionally, a dedicated center channel equipped with Klipsch's revolutionary horn-loaded tweeter technology delivers superior vocal intelligibility that guarantees clear dialogue at any volume. The Core 300 delivers stunning clarity and rich detail from today's demanding content.In addition to the Flexus Core 300 Sound Bar, Klipsch is debuting the all-new Flexus Surround 200 wireless surround speakers with up-firing drivers for immersive Dolby Atmos multichannel surround sound. Simplifying setup and ease, each Flexus Surround speaker independently plugs into a wall outlet-no wires or cables are required between the speakers or lying on the floor.

Die Dirac-Gleichung und Feynman-Graphen werden in Anlehnung an die Feynmanschen Originalarbeiten eingeführt. Viele Reaktionen der elektromagnetischen und schwachen Wechselwirkung werden vom Matrixelement bis zum Wirkungsquerschnitt explizit berechnet. Die Eichinvarianz in der Elektrodynamik und der Quantenmechanik wird besprochen und der Higgs-Mechanismus in Analogie zum Meißner-Effekt in Supraleitern dargestellt. Die Eichtheorien der vereinheitlichten elektroschwachen Wechselwirkung und der Quark-Gluon-Wechselwirkungen (Quantenchromodynamik) schließen daran an. Das Manuskript beruht auf einer zweisemestrigen Vorlesung für fortgeschrittene Studenten, Diplomanden und Doktoranden der experimentellen Elementarteilchenphysik. Die Vorlesungen sollen eine verständliche, mit Analogien und Beispielen aus anderen Gebieten der Physik ergänzte Einführung in das Stoffgebiet geben. Das Buch soll Experimentalphysikern helfen, Matrixelemente und Wirkungsquerschnitte selbst berechnen sowie die grundlegenden Ideen der neuen Eichtheorien anwenden zu können.

Part I deals with principles of quantum statistical mechanics. Part II examines systems composed of independent molecules or other independent subsystems. Part III considers systems of interacting molecules, and Part IV covers quantum statistics and includes sections on Fermi-Dirac and Bose-Einstein statistics, photon gas, and free-volume theories of quantum liquids.

Reviews from the First Edition: "An excellent text ? The postulates of quantum mechanics and the mathematical underpinnings are discussed in a clear, succinct manner." (American Scientist) "No matter how gently one introduces students to the concept of Dirac?s bras and kets, many are turned off. Shankar attacks the problem head-on in the first chapter, and in a very informal style suggests that there is nothing to be frightened of." (Physics Bulletin) Reviews of the Second Edition: "This massive text of 700 and odd pages has indeed an excellent get-up, is very verbal and expressive, and has extensively worked out calculational details---all just right for a first course. The style is conversational, more like a corridor talk or lecture notes, though arranged as a text. ? It would be particularly useful to beginning students and those in allied areas like quantum chemistry." (Mathematical Reviews) R. Shankar has introduced major additions and updated key presentations in this second edition of Principles of Quantum Mechanics. New features of this innovative text include an entirely rewritten mathematical introduction, a discussion of Time-reversal invariance, and extensive coverage of a variety of path integrals and their applications. Additional highlights include: - Clear, accessible treatment of underlying mathematics - A review of Newtonian, Lagrangian, and Hamiltonian mechanics - Student understanding of quantum theory is enhanced by separate treatment of mathematical theorems and physical postulates - Unsurpassed coverage of path integrals and their relevance in contemporary physics The requisite text for advanced undergraduate- and graduate-level students, Principles of Quantum Mechanics, Second Edition is fully referenced and is supported by many exercises and solutions. The book?s self-contained chapters also make it suitable for independent study as well as for courses in applied disciplines.

In this text the authors develop a propagator theory of Dirac particles, photons, and Klein-Gordon mesons and per- form a series of calculations designed to illustrate various useful techniques and concepts in electromagnetic, weak, and strong interactions. these include defining and implementing the renormalization program and evaluating effects of radia- tive corrections, such as the Lamb shift, in low-order calculations. The necessary background for the book is pro- vided by a course in nonrelativistic quantum mechanics at the general level of Schiff's text, QUANTUM MECHANICS.

In 1975, Dirac gave a series of five lectures at the University of New South Wales which were subsequently published in his book, Directions in Physics (1978).

Condon and Shortley has become the standard comprehensive work on the theory of atomic spectra. The first two chapters contain a brief historical introduction and an exposition of quantum mechanics along the lines formulated by Dirac. Then follow sixteen chapters devoted to a unified, logical deduction of the structure of the spectra of atoms from quantum mechanical principles. The theory is given in full detail and the results are amply documented with comparisons with experimental observations. When first published, a reviewer in Nature said that 'Its power and thoroughness leave the general impression of a work of the first rank, which successfully unifies the existing state of our knowledge, and will prove for many years a starting point for further researches and an inspiration to those who may undertake them'. Subsequent reviewers have amply confirmed these views. Science in 1952 commented that it 'has served half a generation and as a guide in further detailed research', and Reviews of Modern Physics in 1957 that this 'monumental book ... continues to be the most comprehensive account of our understanding of atomic spectra - the fruit of several decades' intensive study by a great number of physicists of all countries'.

The first systematic theory of generalized functions (also known as distributions) was created in the early 1950s, although some aspects were developed much earlier, most notably in the definition of the Green's function in mathematics and in the work of Paul Dirac on quantum electrodynamics in physics. The six-volume collection, Generalized Functions, written by I. M. Gelfand and co-authors and published in Russian between 1958 and 1966, gives an introduction to generalized functions and presents various applications to analysis, PDE, stochastic processes, and representation theory. The main goal of Volume 4 is to develop the functional analysis setup for the universe of generalized functions. The main notion introduced in this volume is the notion of rigged Hilbert space (also known as the equipped Hilbert space, or Gelfand triple). Such space is, in fact, a triple of topological vector spaces $E \subset H \subset E'$, where $H$ is a Hilbert space, $E'$ is dual to $E$, and inclusions $E\subset H$ and $H\subset E'$ are nuclear operators. The book is devoted to various applications of this notion, such as the theory of positive definite generalized functions, the theory of generalized stochastic processes, and the study of measures on linear topological spaces.