Quantum Theory (Over 21,000 results)

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Condition: very_good. Book is in very good condition and may include minimal underlining highlighting. The book can also include "From the library of" labels. May not contain miscellaneous items toys, dvds, etc. . We offer 100% money back guarantee and 24 7 customer service.

Hardback. Condition: Good. Richard Feynman's never previously published doctoral thesis formed the heart of much of his brilliant and profound work in theoretical physics. Entitled ?The Principle of Least Action in Quantum Mechanics,' its original motive was to quantize the classical action-at-a-distance electrodynamics. Because that theory adopted an overall space-time viewpoint, the classical Hamiltonian approach used in the conventional formulations of quantum theory could not be used, so Feynman turned to the Lagrangian function and the principle of least action as his points of departure.The result was the path integral approach, which satisfied ? and transcended ? its original motivation, and has enjoyed great success in renormalized quantum field theory, including the derivation of the ubiquitous Feynman diagrams for elementary particles. Path integrals have many other applications, including atomic, molecular, and nuclear scattering, statistical mechanics, quantum liquids and solids, Brownian motion, and noise theory. It also sheds new light on fundamental issues like the interpretation of quantum theory because of its new overall space-time viewpoint.The present volume includes Feynman's Princeton thesis, the related review article ?Space-Time Approach to Non-Relativistic Quantum Mechanics? [Reviews of Modern Physics 20 (1948), 367-387], Paul Dirac's seminal paper ?The Lagrangian in Quantum Mechanics'' [Physikalische Zeitschrift der Sowjetunion, Band 3, Heft 1 (1933)], and an introduction by Laurie M Brown.…

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Paperback. Condition: Fair. It is difficult to imagine any more useful, or more instructive textbook than this. -- Transactions of the Faraday Society This book was the first comprehensive treatment of quantum physics to appear in any language. Originally published in 1936 as part of Oxford University Press's famed International Series of Monographs on Physics, this book is a classic reference text. Although new particles have been discovered since the third edition was published in 1954, its presentation of quantum physics is still relevant because the basic theory remains unchanged. Moreover, its historical perspective is unique and its physical insight substantial; thus, it remains in demand among physics professors, students, and researchers. Beginning with Maxwell and Lorentz's work, W. Heitler, in his lifetime a noted physics professor at the University of Zurich, covers seven major theoretical areas: - the classical theory of radiation- quantum theory of the pure radiation field- the electron field and its interaction with radiation- methods of solution- radiation processes in first approximation- radiative corrections and ambiguous features- the penetrating power of high-energy radiation Here is a unified and accurate guide to the application of radiative processes that explores the mathematics and physics of quantum theory. The author provides numerous examples to illustrate the conceptual material and deals with basic elements of the theory. Electrons, positrons, and radiation are all discussed as are the production, propagation, and detection of em radiation. Heitler's thorough coverage of quantum physics has earned this landmark work an outstanding reputation among physicists and the book is highly recommended as both text and reference.…

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Paperback. Condition: Good. Quantum field theory (QFT) is the union of quantum mechanics and Einstein's special theory of relativity. QFT is the most fundamental physical theory and provides the answers to questions about the basic structure of the physical world. However, the way QFT describes the world is so different from the way our senses present it to us that it requires an overhaul of philosophic categories and arguments. How can we know the microscopic world without a satisfactory measurement theory? What are the general conditions of the world that make possible such knowledge? What are the presuppositions of physical theories? Dr.Auyang argues that the current relational- substantial debate on space- time is inadequate and the observer- observed distinction in quantum interpretations illusory becouse they are hampered by philosophical constructs too narrow to accommodate the complicated structures of modern philosophical theories. Modern physical theories have incorporated many presuppositions of empirical knowledge, and consequently the theories inform us about the general nature of the world and out relation to it, in addition to information about elementary particles. The conceptual structure of QFT is extracted and articulated in common- sense terms, and used to answer many longstanding philosophical questions.…

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Hardback. Condition: Good. Presents (and demystifies) the world of quantum science. This title explores scientific concepts from particles of light, to probability, to states of matter, to what makes greenhouse gases bad in considerable depth, but using examples from the everyday world.

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Paperback. Condition: Very Good. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting.

Paperback. Condition: Very Good. 1. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting.

Condition: good. Book is in good condition and may include underlining highlighting and minimal wear. The book can also include "From the library of" labels. May not contain miscellaneous items toys, dvds, etc. . We offer 100% money back guarantee and 24 7 customer service.

Paperback. Condition: Good. Challenging but invariably eloquent and elegant answers to the most fundamental questions.: What is life? What is mind?-Kirkus Reviews, starred review.

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Paperback. Condition: Very Good. 1. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting.

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Paperback. Condition: Good. Quantum theory confronts us with bizarre paradoxes which contradict the logic of classical physics. This book takes us on a step-by-step tour with the key figures, including Planck, Einstein, Bohr, Heisenberg and Schrodinger.

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Condition: Good. Item in good condition. Textbooks may not include supplemental items i.e. CDs, access codes etc.

Condition: Good. Item in good condition. Textbooks may not include supplemental items i.e. CDs, access codes etc.

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Hardback. Condition: Good. Speculation is rife that by 2012 the elusive Higgs boson will be found at the Large Hadron Collider. If found, the Higgs boson would help explain why everything has mass. But there's more at stake--what we're really testing is our capacity to make the universe reasonable. Our best understanding of physics is predicated on something known as quantum field theory. Unfortunately, in its raw form, it doesn't make sense--its outputs are physically impossible infinite percentages when they should be something simpler, like the number 1. The kind of physics that the Higgs boson represents seeks to "renormalize" field theory, forcing equations to provide answers that match what we see in the real world. The Infinity Puzzle is the story of a wild idea on the road to acceptance. Only Close can tell it. …

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paperback. Condition: Very Good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority.