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- W2891770616 abstract "The (analytic) sextic oscillator is often considered as the prototype of quasi-exactly solvable (QES) Schrödinger equations, i.e., those Schrödinger equations for which at some ad hoc couplings a finite number of eigenstates can be found explicitly by algebraic means, while the remaining ones remain unknown. Recently, a (non-analytic) QES symmetrized quartic oscillator was introduced and shown to complete the list of (analytic) QES anharmonic oscillators, which does not contain any quartic one. Here we prove that such a quartic oscillator is amenable to an sl(2, ) description. Furthermore, we generalize it to a symmetrized sextic oscillator. The latter is obtained by parting the real line into two subintervals − and + on which the corresponding Schrödinger equations are solved by using the functional Bethe ansatz method, and the resulting wavefunctions and their first derivatives are matched at x = 0. Two categories of QES potentials are obtained: the first one containing the well-known analytic sextic potentials as a subset, and the second one of novel potentials with no counterpart in such a class." @default.
- W2891770616 created "2018-09-27" @default.
- W2891770616 creator A5071205193 @default.
- W2891770616 date "2018-08-01" @default.
- W2891770616 modified "2023-09-25" @default.
- W2891770616 title "Quasi-exactly solvable polynomial extensions of the quantum harmonic oscillator" @default.
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- W2891770616 doi "https://doi.org/10.1088/1742-6596/1071/1/012016" @default.
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