Time-dependent Perturbation Theory in Quantum Mechanics

C. Y. Chen

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Time-dependent Perturbation Theory in Quantum Mechanics

C. Y. Chen

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Abstract

After revealing difficulties of the standard time-dependent perturbation theory in quantum mechanics mainly from the viewpoint of practical calculation, we propose a new quasi-canonical perturbation theory. In the new theory, the dynamics of physical observables, instead of that of coefficients of wave-function expansion, is formulated so that the gauge-invariance and correspondence principles are observed naturally.

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C. Y. Chen. 1999-11-14. Time-dependent Perturbation Theory in Quantum Mechanics. https://arxiv.org/abs/quant-ph/9911064

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