Drawing Theories Apart

Drawing Theories Apart PDF

Author: David Kaiser

Publisher: University of Chicago Press

Published: 2009-11-15

Total Pages: 376

ISBN-13: 0226422658

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Winner of the 2007 Pfizer Prize from the History of Science Society. Feynman diagrams have revolutionized nearly every aspect of theoretical physics since the middle of the twentieth century. Introduced by the American physicist Richard Feynman (1918-88) soon after World War II as a means of simplifying lengthy calculations in quantum electrodynamics, they soon gained adherents in many branches of the discipline. Yet as new physicists adopted the tiny line drawings, they also adapted the diagrams and introduced their own interpretations. Drawing Theories Apart traces how generations of young theorists learned to frame their research in terms of the diagrams—and how both the diagrams and their users were molded in the process. Drawing on rich archival materials, interviews, and more than five hundred scientific articles from the period, Drawing Theories Apart uses the Feynman diagrams as a means to explore the development of American postwar physics. By focusing on the ways young physicists learned new calculational skills, David Kaiser frames his story around the crafting and stabilizing of the basic tools in the physicist's kit—thus offering the first book to follow the diagrams once they left Feynman's hands and entered the physics vernacular.

Advanced Quantum Mechanics

Advanced Quantum Mechanics PDF

Author: Freeman Dyson

Publisher: World Scientific

Published: 2011-11-25

Total Pages: 316

ISBN-13: 9814397199

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Renowned physicist and mathematician Freeman Dyson is famous for his work in quantum mechanics, nuclear weapons policy and bold visions for the future of humanity. In the 1940s, he was responsible for demonstrating the equivalence of the two formulations of quantum electrodynamics — Richard Feynman's diagrammatic path integral formulation and the variational methods developed by Julian Schwinger and Sin-Itiro Tomonoga — showing the mathematical consistency of QED. This invaluable volume comprises the legendary lectures on quantum electrodynamics first given by Dyson at Cornell University in 1951. The late theorist Edwin Thompson Jaynes once remarked, “For a generation of physicists they were the happy medium: clearer and better motivated than Feynman, and getting to the point faster than Schwinger”. This edition has been printed on the 60th anniversary of the Cornell lectures, and includes a Foreword writer science historian David Kaiser, as well as notes from Dyson's lectures at the Les Houches Summer School of Theoretical Physics in 1954. The Les Houches lectures, described as a supplement to the original Cornell notes, provide a more detailed look at field theory, a careful and rigorous derivation of Fermi's Golden Rule, and a masterful treatment of renormalization and Ward's Identity. Future generations of physicists are bound to read these lectures with pleasure, benefiting from the lucid style that is so characteristic of Dyson's exposition. Contents:Introduction:BooksSubject MatterDetailed ProgramOne-Particle TheoriesThe Dirac Theory:The Form of the Dirac EquationLorentz Invariance of the Dirac EquationTo Find the SThe Covariant NotationConservation Laws. Existence of SpinElementary SolutionsThe Hole TheoryPositron StatesElectromagnetic Properties of the ElectronThe Hydrogen AtomSolution of Radial EquationBehaviour of an Electron in a Non-Relativistic ApproximationSummary of Matrices in the Dirac Theory in Our NotationSummary of Matrices in the Dirac Theory in the Feynman NotationScattering Problems and Born Approximation:General DiscussionProjection OperatorsCalculation of TracesScattering of Two Electrons in Born Approximation. The Møller FormulaRelation of Cross-sections to Transition AmplitudesResults for Møller ScatteringNote on the Treatment of Exchange EffectsRelativistic Treatment of Several ParticlesField Theory:Classical Relativistic Field TheoryQuantum Relativistic Field TheoryThe Feynman Method of QuantizationThe Schwinger Action PrincipleExamples of Quantized Field Theories:The Maxwell FieldTheory of Line Shift and Line WidthField Theory of the Dirac Electron, Without InteractionField Theory of Dirac Electron in External FieldField Theory of Dirac and Maxwell FieldsFree Particle Scattering Problems:Møller Scattering of Two ElectronsScattering of a Photon by an Electron. The Compton Effect. Klein-Nishina FormulaTwo Quantum Pair AnnihilationBremsstrahlung and Pair Creation in the Coulomb Field of an AtomGeneral Theory of Free Particle Scattering:The Reduction of an Operator to Normal FormFeynman GraphsFeynman Rules of CalculationThe Self-Energy of the ElectronSecond-Order Radiative Corrections to ScatteringThe Treatment of Low-Frequency Photons. The Infra-Red CatastropheScattering by a Static Potential. Comparison with Experimental Results:The Magnetic Moment of the ElectronRelativistic Calculation of the Lamb Shift Readership: Physicists, graduate and undergraduate students. Keywords:Relativistic Quantum Mechanics;Quantum Field Theory;Quantum ElectrodynamicsKey Features:Freeman Dyson's first physics textbookMany important details clearly explained, including the reason for 4 x 4 Dirac matrices, the magnetic moment of the electron, etc.Very well-balanced treatment of field theory and QEDThe original exposition has been expanded by about 40% with the Les Houches lecturesReviews: Reviews of the First Edition “… one can profit significantly from the insight into the physics beneath the apparatus, and the extensive and detailed treatment of some problems. Therefore it may be very useful as an additional source in the preparation of a course on quantum field theory … I highly recommend this book to get a different view on quantum field theory, and also to understand how quantum field theory emerged in its present form at all.” Mathematical Reviews “The fame of these lectures as well as of this author, together with the enduring interest in their contents attested by this transcription, obviously classify the book as of great interest to students and researchers willing to hear a presentation of quantum electrodynamics from one of the founding fathers.” Zentralblatt MATH “This book is likely to be of interest mainly to historians of science … one thing was done rather well was the relativistic treatment of the spectrum of the hydrogen atom, which is found algebraically and, rather elegantly and efficiently. The treatment of fluctuations in fields had some nice points …” CERN Courier

Quantum Legacies

Quantum Legacies PDF

Author: David Kaiser

Publisher: University of Chicago Press

Published: 2020-03-25

Total Pages: 357

ISBN-13: 022669805X

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The ideas at the root of quantum theory remain stubbornly, famously bizarre: a solid world reduced to puffs of probability; particles that tunnel through walls; cats suspended in zombielike states, neither alive nor dead; and twinned particles that share entangled fates. For more than a century, physicists have grappled with these conceptual uncertainties while enmeshed in the larger uncertainties of the social and political worlds around them, a time pocked by the rise of fascism, cataclysmic world wars, and a new nuclear age. In Quantum Legacies, David Kaiser introduces readers to iconic episodes in physicists’ still-unfolding quest to understand space, time, and matter at their most fundamental. In a series of vibrant essays, Kaiser takes us inside moments of discovery and debate among the great minds of the era—Albert Einstein, Erwin Schrödinger, Stephen Hawking, and many more who have indelibly shaped our understanding of nature—as they have tried to make sense of a messy world. Ranging across space and time, the episodes span the heady 1920s, the dark days of the 1930s, the turbulence of the Cold War, and the peculiar political realities that followed. In those eras as in our own, researchers’ ambition has often been to transcend the vagaries of here and now, to contribute lasting insights into how the world works that might reach beyond a given researcher’s limited view. In Quantum Legacies, Kaiser unveils the difficult and unsteady work required to forge some shared understanding between individuals and across generations, and in doing so, he illuminates the deep ties between scientific exploration and the human condition.

Tuva Or Bust!

Tuva Or Bust! PDF

Author: Ralph Leighton

Publisher: W. W. Norton & Company

Published: 2000

Total Pages: 268

ISBN-13: 9780393320695

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A close friend of physicist Richard Feynman chronicles his relationship with the scientist and describes their ten-year quest to reach the remote country of Tannu Tuva.

Math with Bad Drawings

Math with Bad Drawings PDF

Author: Ben Orlin

Publisher: Black Dog & Leventhal

Published: 2018-09-18

Total Pages: 556

ISBN-13: 0316509027

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A hilarious reeducation in mathematics-full of joy, jokes, and stick figures-that sheds light on the countless practical and wonderful ways that math structures and shapes our world. In Math With Bad Drawings, Ben Orlin reveals to us what math actually is; its myriad uses, its strange symbols, and the wild leaps of logic and faith that define the usually impenetrable work of the mathematician. Truth and knowledge come in multiple forms: colorful drawings, encouraging jokes, and the stories and insights of an empathetic teacher who believes that math should belong to everyone. Orlin shows us how to think like a mathematician by teaching us a brand-new game of tic-tac-toe, how to understand an economic crises by rolling a pair of dice, and the mathematical headache that ensues when attempting to build a spherical Death Star. Every discussion in the book is illustrated with Orlin's trademark "bad drawings," which convey his message and insights with perfect pitch and clarity. With 24 chapters covering topics from the electoral college to human genetics to the reasons not to trust statistics, Math with Bad Drawings is a life-changing book for the math-estranged and math-enamored alike.

Fixing Broken Windows

Fixing Broken Windows PDF

Author: George L. Kelling

Publisher: Simon and Schuster

Published: 1997

Total Pages: 340

ISBN-13: 0684837382

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Cites successful examples of community-based policing.

Quantum Field Theory in a Nutshell

Quantum Field Theory in a Nutshell PDF

Author: A. Zee

Publisher: Princeton University Press

Published: 2010-02-01

Total Pages: 608

ISBN-13: 1400835321

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A fully updated edition of the classic text by acclaimed physicist A. Zee Since it was first published, Quantum Field Theory in a Nutshell has quickly established itself as the most accessible and comprehensive introduction to this profound and deeply fascinating area of theoretical physics. Now in this fully revised and expanded edition, A. Zee covers the latest advances while providing a solid conceptual foundation for students to build on, making this the most up-to-date and modern textbook on quantum field theory available. This expanded edition features several additional chapters, as well as an entirely new section describing recent developments in quantum field theory such as gravitational waves, the helicity spinor formalism, on-shell gluon scattering, recursion relations for amplitudes with complex momenta, and the hidden connection between Yang-Mills theory and Einstein gravity. Zee also provides added exercises, explanations, and examples, as well as detailed appendices, solutions to selected exercises, and suggestions for further reading. The most accessible and comprehensive introductory textbook available Features a fully revised, updated, and expanded text Covers the latest exciting advances in the field Includes new exercises Offers a one-of-a-kind resource for students and researchers Leading universities that have adopted this book include: Arizona State University Boston University Brandeis University Brown University California Institute of Technology Carnegie Mellon College of William & Mary Cornell Harvard University Massachusetts Institute of Technology Northwestern University Ohio State University Princeton University Purdue University - Main Campus Rensselaer Polytechnic Institute Rutgers University - New Brunswick Stanford University University of California - Berkeley University of Central Florida University of Chicago University of Michigan University of Montreal University of Notre Dame Vanderbilt University Virginia Tech University

The Origin of Consciousness in the Breakdown of the Bicameral Mind

The Origin of Consciousness in the Breakdown of the Bicameral Mind PDF

Author: Julian Jaynes

Publisher: Houghton Mifflin Harcourt

Published: 2000-08-15

Total Pages: 580

ISBN-13: 0547527543

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National Book Award Finalist: “This man’s ideas may be the most influential, not to say controversial, of the second half of the twentieth century.”—Columbus Dispatch At the heart of this classic, seminal book is Julian Jaynes's still-controversial thesis that human consciousness did not begin far back in animal evolution but instead is a learned process that came about only three thousand years ago and is still developing. The implications of this revolutionary scientific paradigm extend into virtually every aspect of our psychology, our history and culture, our religion—and indeed our future. “Don’t be put off by the academic title of Julian Jaynes’s The Origin of Consciousness in the Breakdown of the Bicameral Mind. Its prose is always lucid and often lyrical…he unfolds his case with the utmost intellectual rigor.”—The New York Times “When Julian Jaynes . . . speculates that until late in the twentieth millennium BC men had no consciousness but were automatically obeying the voices of the gods, we are astounded but compelled to follow this remarkable thesis.”—John Updike, The New Yorker “He is as startling as Freud was in The Interpretation of Dreams, and Jaynes is equally as adept at forcing a new view of known human behavior.”—American Journal of Psychiatry

The Dark Forest

The Dark Forest PDF

Author: Cixin Liu

Publisher: Tor Books

Published: 2015-08-11

Total Pages: 513

ISBN-13: 1466853433

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The inspiration for the Netflix series 3 Body Problem! Over 1 million copies of the Three-Body Problem series sold in North America PRAISE FOR THE THREE-BODY PROBLEM SERIES: “A mind-bending epic.”—The New York Times • “War of the Worlds for the 21st century.”—The Wall Street Journal • “Fascinating.”—TIME • “Extraordinary.”—The New Yorker • “Wildly imaginative.”—Barack Obama • “Provocative.”—Slate • “A breakthrough book.”—George R. R. Martin • “Impossible to put down.”—GQ • “Absolutely mind-unfolding.”—NPR • “You should be reading Liu Cixin.”—The Washington Post The Dark Forest is the second novel in the groundbreaking, Hugo Award-winning series from China's most beloved science fiction author, Cixin Liu. In The Dark Forest, Earth is reeling from the revelation of a coming alien invasion-in just four centuries' time. The aliens' human collaborators may have been defeated, but the presence of the sophons, the subatomic particles that allow Trisolaris instant access to all human information, means that Earth's defense plans are totally exposed to the enemy. Only the human mind remains a secret. This is the motivation for the Wallfacer Project, a daring plan that grants four men enormous resources to design secret strategies, hidden through deceit and misdirection from Earth and Trisolaris alike. Three of the Wallfacers are influential statesmen and scientists, but the fourth is a total unknown. Luo Ji, an unambitious Chinese astronomer and sociologist, is baffled by his new status. All he knows is that he's the one Wallfacer that Trisolaris wants dead. The Three-Body Problem Series The Three-Body Problem The Dark Forest Death's End Other Books by Cixin Liu Ball Lightning Supernova Era To Hold Up the Sky The Wandering Earth A View from the Stars At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.