Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on "Bidimensional bound states for charged polar nanoparticles''   In a recent paper Castellanos-Jaramillo and Castellanos-Moreno proposed a
simple quantum-mechanical model for an electron in the vicinity of an ionized
nanostructure with a permanent electric dipole. They chose the interaction of
the electron with the charge and the dipole in such a way that the resulting
Schr\"{o}dinger equation is separable into radial and angular parts. In this
comment we show that those authors did not solve the angular eigenvalue
equation with proper periodic boundary conditions and that they also made a
mistake in the elimination of the first derivative in the radial equation. Such
errors invalidate their results of the Einstein coefficients for the $\left(
GaAs\right)_{3}$ system considered.

9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
37
The categories of this paper are: supr-con