Comment on: "Some quantum aspects of a particle with electric quadrupole moment interacting with an electric field subject to confining potentials". Int. J. Mod. Phys. A 29 (2014) 1450117

TL;DR

This paper critiques a previous study on a particle with an electric quadrupole moment, clarifying that the model does not support bound states and correcting the spectrum and cyclotron frequency results.

Contribution

It provides a critical analysis of earlier work, highlighting errors in the bound-state spectrum and the interpretation of cyclotron frequencies in the model.

Findings

The system does not support bound states due to unbounded motion along the z-axis.

The previous bound-state spectrum in the x-y plane was incorrect.

Allowed cyclotron frequencies are artifacts of the original approach.

Abstract

We analyze the results obtained from a model consisting of the interaction etween the electric quadrupole moment of a moving particle and an electric field. We argue that the system does not support bound states because the motion along the $z$ axis is unbounded. It is shown that the author obtains a wrong bound-state spectrum for the motion in the $x-y$ plane and that the existence of allowed cyclotron frequencies is an artifact of the approach.