Abstract
Various quasi-exact solvability conditions, involving the parameters of the periodic associated Lamé potential, are shown to emerge naturally in the quantum Hamilton–Jacobi (QHJ) approach. We study the singularity structure of the quantum momentum function, which yields the band-edge eigenvalues and eigenfunctions and compare it with the solvable and quasi-exactly solvable non-periodic potentials, as well as the periodic ones.
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Ranjani, S.S., Kapoor, A.K. & Panigrahi, P.K. Periodic Quasi-Exactly Solvable Models. Int J Theor Phys 44, 1167–1176 (2005). https://doi.org/10.1007/s10773-005-4436-0
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DOI: https://doi.org/10.1007/s10773-005-4436-0