mathematical formulation quantum theory electromagnetic de feynman richard (6 resultados)

Half cloth binding. Condición: Gut. 26 x 20 cm (10,5 x 8 inches). Present is the complete volume 80 with X, 1132 pp. *First printing. The mathematical proof of the validity of the Feynman rules for calculations of amplitudes in QED. Erwin Hahn's "Spin Echoes" builds the first detection and report of spin echoes in nuclear magnetic resonance. - Released stamp on title back side, else in very good condition. Sprache: Englisch Gewicht in Gramm: 4000.

Soft cover. Condición: Fine. ++"Feynman's proof of his QED methodology"--David Wenner, History of Physics, pg 509++ FEYNMAN, Richard. "Mathematical Formulation of the Quantum Theory of Electromagnetic Interaction," in the Physical Review, Lancaster Pa. and New York; American Physical Society, 1950. 1st Edition. Original wrappers. Very short (15mm) tear in the spine cover at top, otherwise a FINE copy. With the ownership rubberstamp of physicist "Christian Moller" (1904-1980, Danish chemist and physicist who made fundamental contributions to the theory of relativity, theory of gravitation and quantum chemistry.")--Wikipedia [++] Feynman's paper offering the proof for "Feynman diagrams" and "Feynman rules", quietly referred to in the abstract as "The validity of the rules given in previous papers for the solution of problems in quantum electrodynamics is established". "Mathematical proof of the validity of the Feynman rules for calculations of amplitudes in QED."--Particle Physics: One Hundred Years of Discoveries:  "In 1965 Feynman was awarded the Nobel Prize along with Schwinger and Tomonaga "for their fundamental work in quantum electrodynamics, with deep-ploughing consequences for the physics of elementary particles"--Nobel Foundation This was sort of--the ending-alpha and omega of RPF's published work in QED. (See Schweber, S.S., "QED and the men who made it: Dyson, Feynman, Schwinger, and Tomonaga".).

Original wrappers. Condición: Very Good. FIRST EDITION OFFPRINTS. EXTREMELY RARE OFFPRINTS OF FEYNMAN'S FINAL TWO PAPERS ON QUANTUM ELECTRODYNAMICS, DESCRIBING THE MATHEMATICAL FOUNDATIONS FOR HIS PATH-INTEGRALS AND FEYNMAN DIAGRAMS. Feynman himself stated about these papers: "In these two papers, I put everything that I had done and thought should be published on the subject [i.e., quantum electrodynamics]. And that was the end of my published work in this field" (quoted in Mehra, The Beat of a Different Drum, p. 325). We are not aware of any other offprints of any of Feynman's papers on quantum electrodynamics having appeared on the market; no copies on OCLC. "While Feynman made many original and imaginative contributions to theoretical physics, it may well be that his place in the history of science will be largely based on his approach to renormalizing quantum electrodynamics, and especially on the tools that he invented to accomplish that goal, such as path integrals, the operator calculus, and the famous Feynman diagrams" (Selected Papers, p. 7). "Nobody but Dick [Feynman] could use his theory, because he was always invoking his intuition to make up the rules of the game as he went along. Until the rules were codified and made mathematically precise, I could not call it a theory" (Freeman Dyson, quoted in David Kaiser, Pedagogy and the Practice of Science). "In 1950-51 Richard Feynman wrote two papers in which he described the mathematical formulation of his method in quantum electrodynamics [the offered papers]. In the 1950 paper Feynman used the methods of his Ph.D. thesis and his 1948 paper in the Reviews of Modern Physics ["Space-Time Approach to Non-Relativistic Quantum Mechanics"] to derive the basic equations and principles of his method. In the second paper, Feynman gave further development of the formalism and discussed the new idea of how to proceed with non-commuting quantities. In these articles, besides deriving the old formulas, Feynman obtained new relations and derivations, and invented new approaches to solve different mathematical problems in quantum mechanics and quantum field theory. â â "In ['Mathematical formulation.'], Feynman established the validity of the rules given in previous papers for the solution of problems in quantum electrodynamics. Starting with Fermi's formulation of the field as a set of harmonic oscillators, he integrated out the effect of the oscillators in the Lagrangian form of quantum mechanics. There resulted an expression for the effect of all virtual photons valid to all orders in e2/hc. Feynman showed that the evaluation of the expression as a power series in e2/hc gives just the terms expected by the aforementioned rules. In addition, Feynman established a relation between the amplitude for a given process in an arbitrary unquantized potential and in a quantum electrodynamical field. This relation permitted a simple general statement of the laws of quantum electrodynamics" (Mehra, pp. 301-2). "Feynman's 1951 article ['An operator calculus'] was extremely rich in new mathematical ideas and inventions which he proposed to use in quantum theory, especially in quantum electrodynamics. The main new mathematical idea in this article was the introduction and development of the new operator algebra which originated from Feynman's Ph.D. thesis and his 1948 paper in the Reviews of Modern Physics" (Mehra, p. 307). "In 1951, Feynman completed his work on quantum electrodynamics, describing and applying a new operator calculus for operators dependent on a continuous parameter (such as the time), which describes the ordering of application of the generally non-commuting operators. Using the ordering parameter, the ordinary methods of calculus (integration and power series expansions, for example) can be carried through without regard to the ordering until the final result, which is then appropriately reordered" (Selected Papers, p. 174). Feynman himself stated about this paper: "I felt it was important. In the years since I had invented it [quantum e.

Soft cover. Condición: Very Good. 1st Edition. FIRST EDITION IN ORIGINAL WRAPPERS of Feynman's paper providing a rigorous justification and proof for his famous "Feynman diagrams" and "Feynman rules". "Nobody but Dick [Feynman] could use his theory, because he was always invoking his intuition to make up the rules of the game as he went along. Until the rules were codified and made mathematically precise, I could not call it a theory" (Freeman Dyson, quoted in David Kaiser, Pedagogy and the Practice of Science). Particle Physics: One Hundred Years of Discoveries: "Mathematical proof of the validity of the Feynman rules for calculations of amplitudes in QED. Nobel Prize to R.P. Feynman awarded in 1965." IN: The Physical Review, Volume 80, Second Series, Number 3, November 1, 1950, pp. 440-457. Lancaster, PA and New York: for the American Physical Society, 1950. Quarto, original wrappers. A nearly invisible spot of dampstaining on the extreme outer edge of some pages (far from text); otherwise fine. Rare in original wrappers and without any institutional stamps. Note: A custom cloth box is available for this item for an additional $225.

1st Edition. FIRST EDITION of Feynman's proof of the validity of his 1949 "reformation of quantum mechanics itself," work that would "elegantly rewrite quantum theory" (American National Biography; Peacock, The Quantum Revolution, 102). ALSO included is Erwin Hahn's "Spin Echoes," the first detection and report of spin echoes in nuclear magnetic resonance (NMR). FEYNMAN PAPER: In this, the third paper in his pivotal reformulation of quantum mechanics, Feynman provides the mathematical "proof of the validity of the [his] rules for calculations of amplitudes in quantum electrodynamics. Feynman's paper rigorously proved that his treatment of "the problem of molecular forces from a thoroughly quantum-mechanical point of view" was accurate (DSB). Feynman had arrived "at a simple means of calculating the energy of a molecular system that continues to guide quantum chemists" (ibid). In 1965 Feynman was awarded the Nobel Prize along with Schwinger and Tomonaga "for their fundamental work in quantum electrodynamics, with deep-ploughing consequences for the physics of elementary particles" (Particle Physics, One Hundred Years of Discoveries, 113). HAHN PAPER: Erwin Hahn's "Spin Echoes," relays the first detection and report of spin echoes in nuclear magnetic resonance (NMR)."In magnetic resonance, a spin echo is the refocusing of spin magnetization by a pulse of resonant electromagnetic radiation. Modern NMR and magnetic resonance imaging make use of this effect. Echo phenomena are important features of coherent spectroscopy which have been used in fields other than magnetic resonance including laser spectroscopy and neutron scattering" (Wikipedia). In 1950, Hahn, then a graduate student, was experimenting with NMR using pulsed RF energy and observed echo signals, hereafter called 'Spin Echo' or 'Hahn Echo' signals. We also separately offer this paper in its original wrappers. CONDITION & DETAILS: Lancaster: American Physical Society, Volume 80, October to December 1950. Bound in green buckram. NOT EX-LIBRARY. Tightly and solidly bound. Bright and clean inside and out. Near fine condition.

Condición: Near Fine. Lancaster, PA 1950 first edition. American Institute of Physics. Hardcover unusually thick 4to. Red buckram. 1060p. 1132p. Feynman article in vol 80, p. 440-457; Hahn in vol 80 p. 580-594 . Near Fine , slight bit of residue where pocket removed from rear end paper. Small Research Library stamp on end paper and titlepage. no spine numbers. Two very important articles in one volume plus many additional scientific reports of considerable imporantce. Pictures available on request.