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Feynman's thesis:

a new approach to quantum theory
Front Cover
1 Review
World Scientific, 1942 - Science - 119 pages
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, a
  

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Selected pages

Contents

The Principle of Least Action in Quantum Mechanics
1
II Least Action in Classical Mechanics
6
2 The Principle of Least Action
9
3 Conservation of Energy Constants of the Motion
10
4 Particles Interacting through an Intermediate Oscillator
16
III Least Action in Quantum Mechanics
24
1 The Lagrangian in Quantum Mechanics
26
2 The Calculation of Matrix Elements in the Language of a Lagrangian
32
6 Conservation of Energy Constants of the Motion
42
7 The Role of the Wave Function
44
8 Transition Probabilities
46
9 Expectation Values for Observables
49
10 Application to the Forced Harmonic Oscillator
55
11 Particles Interacting through an Intermediate Oscillator
61
12 Conclusion
68
Spacetime Approach to NonRelativistic Quantum Mechanics
71

3 The Equations of Motion in Lagrangian Form
34
4 Translation to the Ordinary Notation of Quantum Mechanics
39
5 The Generalization to any Action Function
41
The Lagrangian in Quantum Mechanics
111
Copyright

Common terms and phrases

action function action principle calculate classical Lagrangian classical mechanics consider constant coordinates corresponding defined definition depends described different differential difficulty discussed effect electromagnetic field energy equations of motion equivalent example expected value exponential expression factor Feynman final find finite first order fixed formulation of quantum Hamiltonian harmonic oscillator infinite integral integrand interaction intermediate oscillator intermediate q’s interval least action limit mathematical matrix element measurement method momentum notation obtained operator P. A. M. Dirac particles path perturbation physical postulate potential principle of least probability amplitude problem qt|qT quantity quantized quantum analogue quantum electrodynamics quantum mechanics quantum theory region relation replaced represent result satisfies simple space-time specified sufficient suppose t1 and t2 thesis ti+1 tonian transformation function transition element variables vector potential velocities wave function xi+1 xk+1 zero

References to this book

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More Reflection on Physics
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References from web pages

FEYNMAN'S THESIS — A NEW APPROACH TO QUANTUM THEORY
FEYNMAN'S THESIS — A NEW APPROACH TO QUANTUM THEORY.
www.worldscibooks.com/ physics/ 5852.html

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First paper originally presented as rp Feynman's thesis (Ph. D.--Princeton University, 1942). Second paper originally published: 1948; ...
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Feynman's Thesis (981-256-380-6) by World Scientific Publishing Co Ltd - Richard Feynman's never previously published doctoral thesis formed the heart of ...
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Intégrale de chemin - Wikipédia
Laurie M. Brown (Editor) ; Feynman's thesis: a new approach to quantum theory, World Scientific (2005),ISBN 9812563806. Contient la thèse originale de ...
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Feynman物理改訂版といろいろ : セレクトリスト | シンプルアマゾン 通販
Feynman's Thesis: A New Approach to Quantum Theory Feynman's Thesis: A New Approach to Quantum Theory (詳細) Laurie M. Brown(著), Richard Phillips ...
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Bibliographic information

QR code for Feynman's thesis
TitleFeynman's thesis: a new approach to quantum theory
AuthorRichard Phillips Feynman
EditorLaurie M.. Brown
Editionillustrated, reprint
PublisherWorld Scientific, 1942
ISBN9812567631, 9789812567635
Length119 pages
Subjects ›  › 

Science / Physics / Quantum Theory
  
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