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Perturbation theoryPerturbation theory is a powerful method used in quantum mechanics to find an approximate solution to a problem that cannot be solved exactly. It is particularly useful when dealing with a Hamiltonian that can be separated into a solvable part and a small perturbing part. This theory is applied when the perturbations are smaller than the unperturbed system.

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Mathematical Fundamentals of Perturbation Theory

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  • 发表日期：

    2025年

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  • Carlos Vargas Hernández

摘要

Perturbation theoryPerturbation theory is a powerful method used in quantum mechanics to find an approximate solution to a problem that cannot be solved exactly. It is particularly useful when dealing with a Hamiltonian that can be separated into a solvable part and a small perturbing part. This theory is applied when the perturbations are smaller than the unperturbed system.