Effects of external fields on diatomic molecules under Morse potential and comparison with Rydberg-Klein-Rees data for carbon monoxide

Abstract Topological defects on the bound state energy eigenvalues of the diatomic molecules HCl , LiH , CO , H 2 N 2 and NO embedded with Morse potential has been evaluated under the framework of Nikiforov-Uvarov method. Effect of Aharonov–Bohm (AB)-flux field on the diatomic molecules is also discussed here. For arbitrary l ≠ 0, Pekeris approximation is used to deal with the centrifugal barrier term. A comparison of vibrational energy levels for CO ( X 1 Σ + ) diatomic molecule under modified shifted Morse potential (MSMP) with experimental Rydberg-Klein-Rees data has been shown in the Minkowski space. Present outcomes are good enough in accuracy in comparison of all available results found so far.