This program illustrates the quantum states of a one-dimensional infinite square well with a symmetric constant-energy step perturbation. The perturbed eigenfunctions are calculated, both ground and several excited states, as well as the expansion coefficients in terms of the unperturbed eigenfunctions. A challenge section asks the user to answer various questions regarding mixing coefficients and the results of the perturbation.
This simulation is part of a collection of animations/simulations for the teaching of concepts in quantum mechanics.
Kohnle, A. (2014, September 1). QuVis: Symmetric Perturbation. Retrieved April 22, 2018, from https://www.st-andrews.ac.uk/physics/quvis/simulations_html5/sims/SymmetricPerturbation/SymmetricPerturbation.html
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