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Schwinger's Quantum Action Principle : From Dirac’s Formulation Through Feynman’s Path Integrals, the Schwinger-Keldysh Method, Quantum Field Theory, to Source Theory / by Kimball A. Milton.
Springer Nature - Springer Physics and Astronomy (R0) eBooks 2015 English International Available online
View online- Format:
- Book
- Author/Creator:
- Milton, Kimball A., Author.
- Series:
- SpringerBriefs in Physics, 2191-5423
- Language:
- English
- Subjects (All):
- Quantum theory.
- Physics.
- Mathematical physics.
- Quantum Physics.
- History and Philosophical Foundations of Physics.
- Mathematical Applications in the Physical Sciences.
- Mathematical Methods in Physics.
- Local Subjects:
- Quantum Physics.
- History and Philosophical Foundations of Physics.
- Mathematical Applications in the Physical Sciences.
- Mathematical Methods in Physics.
- Physical Description:
- 1 online resource (122 p.)
- Edition:
- 1st ed. 2015.
- Place of Publication:
- Cham : Springer International Publishing : Imprint: Springer, 2015.
- Language Note:
- English
- Summary:
- Starting from the earlier notions of stationary action principles, these tutorial notes shows how Schwinger’s Quantum Action Principle descended from Dirac’s formulation, which independently led Feynman to his path-integral formulation of quantum mechanics. Part I brings out in more detail the connection between the two formulations, and applications are discussed. Then, the Keldysh-Schwinger time-cycle method of extracting matrix elements is described. Part II will discuss the variational formulation of quantum electrodynamics and the development of source theory.
- Contents:
- Historical introduction
- Review of classical action principles
- Classical field theory - electrodynamics
- Quantum Action Principle
- Time-cycle or Schwinger-keldysh Formulation
- Relativistic Theory of Fields
- Nonrelativistic Source theory
- Concluding remarks.
- Notes:
- Description based upon print version of record.
- Includes bibliographical references.
- ISBN:
- 3-319-20128-X
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