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It is shown that by means of the approach based on the QuantumHamilton-Jacobi equation, it is possible to modify the WKB expressions for theenergy levels of quantum systems, when incorrect, obtaining exact WKB-likeformulae. This extends the results found in previous papers, where it wasdemonstrated that the QHJ method provides exact WKB-like expressions for thewave functions.

Exact WKB-like Formulae for the Energies by means of the Quantum Hamilton-Jacobi Equation