Schwinger's Quantum Action Principle
Kimball A. Milton
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Springer International Publishing
Naturwissenschaften, Medizin, Informatik, Technik / Theoretische Physik
Beschreibung
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.
Kundenbewertungen
Principle of Least Action in Quantum Mechanics, Julian Schwinger, Source Theory, Schwinger-Keldysh Formulation, Variational Formulation of Quantum Mechanics, Quantum Action Principle