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Functional Derivative Approach,Heisenberg’s equation of motion into a theory formulated solely in terms of .-numbers. This can be achieved either by Schwinger’s action principle or with the aid of a generation functionaldefined as follows:
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查看完整版本: Titlebook: Classical and Quantum Dynamics; From Classical Paths Walter Dittrich,Martin Reuter Textbook 20175th edition Springer International Publishi