Time-Dependent Perturbation Theory


1 The central problem in time-dependent perturbation theory: In time-independent perturbation theory, the object was to find the new eigenvalues and eigenstates when a system whose states are known is 'perturbed' by adding an additional term to the Hamiltonian. The main trick was to multiply the perturbation operator by λ, and then expand both the states… (More)


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