Comment on: "Bound states for a Coulomb-type potential induced by the interaction between a moving electric quadrupole moment and a magnetic field". Ann. Phys. 341 (2014) 86

TL;DR

This paper critiques a previous study on bound states induced by electric quadrupole and magnetic field interactions, arguing that the original conclusions about bound states and cyclotron frequencies are incorrect due to methodological flaws.

Contribution

It provides a critical analysis showing that the earlier method is unsuitable for finding all bound states and challenges the existence of certain cyclotron frequencies.

Findings

No bound states exist as previously claimed.

The method used in the original paper is flawed.

Allowed cyclotron frequencies are artifacts of the approach.

Abstract

We analyze the results obtained from a model consisting of the interaction between a moving electric quadrupole moment and a magnetic field. We argue that there are no bound states contrary to what the author stated. It is shown that the proposed method is unsuitable for obtaining all the bound states and that the existence of allowed cyclotron frequencies is an artifact of the approach.