On the eigenvalues of the harmonic oscillator with a Gaussian perturbation
arxiv(2024)
摘要
We test the analytical expressions for the first two eigenvalues of the
harmonic oscillator with a Gaussian perturbation proposed recently. Our
numerical eigenvalues show that those expressions are valid in an interval of
the coupling parameter that is greater than the one estimated by the authors.
We also calculate critical values of the coupling parameter and several
exceptional points in the complex plane.
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