Comment on ‘Quantum anharmonic oscillator plus delta-function potential: a molecular view of pairing formation and breaking in the coordinate space’

Abstract

We analyze a recent discussion of one-dimensional quantum-mechanical models with a perturbation produced by a delta-function potential. We show that the authors failed to derive a correct transcendental equation for the eigenvalues in the case of the Morse oscillator because they omitted the contribution of the continuum spectrum in the basis set.

Comment on ‘Thermodynamics of a particle in square well potential’

“…Bhattacharyya and Mitra's calculation of the thermodynamic functions for the particle in a finite box is incorrect because the authors omitted the contribution of the continuous spectrum. A similar mistake was pointed out with respect to a paper published recently in this journal [5].…”