3.4 Linear Momentum Matrices in Spheroconal Harmonic Bases

In references 12 and 13, we also evaluated the actions of the linear momentum operators on the spheroconal eigenstates of the free particle and the rotations of symmetric molecules, respectively, and only for the lowest values of . Here, we also want to refer to the figure at the beginning of Section 3 sketching the connections between the eigenstates in neighboring columns in order to go from the = 0 to the = 4 most asymmetric eigenstates of species [1], in order to make some clarifying remarks based on the content of Section 3.1. Indeed, we must emphasize that the radial derivative coefficients in the operators, Eq. (A.8), are the director cosines of the radial unit vector, ...

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