Schwinger's Quantum Action Principle: From Dirac's formulation through Feynman's path integrals, the Schwinger-Keldysh method, quantum field theory, to source theory

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Cover of 'Schwinger's Quantum Action Principle: From Dirac's formulation through

Feynman's path integrals, the Schwinger-Keldysh method, quantum field theory,

to source theory'

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Book Overview
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Chapter 1 Historical Introduction
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Chapter 2 Review of Classical Action Principles
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Chapter 3 Classical Field Theory—Electrodynamics
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Chapter 4 Quantum Action Principle
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Chapter 5 Time-Cycle or Schwinger-Keldysh Formulation
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Chapter 6 Relativistic Theory of Fields
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Chapter 7 Nonrelativistic Source Theory
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Chapter 8 Concluding Remarks

Attention for Chapter 4: Quantum Action Principle

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Source field

Cited by user Alshal on 06 May 2023

In theoretical physics, a source field is a background field is the electromagnetic potential or the metric tensor, the source field is the electric current or the stress…

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