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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 (Paperback, 2015 ed.)
Loot Price: R2,134
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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 (Paperback, 2015 ed.)
Series: SpringerBriefs in Physics
Expected to ship within 10 - 15 working days
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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.
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