Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Analytical and numerical calculations of spectral and optical
  characteristics of spheroidal quantum dots   In the effective mass approximation for electronic (hole) states of a
spheroidal quantum dot with and without external fields the perturbation theory
schemes are constructed in the framework of the Kantorovich and adiabatic
methods. The eigenvalues and eigenfunctions of the problem, obtained in both
analytical and numerical forms, were applied for the analysis of spectral and
optical characteristics of spheroidal quantum dots in homogeneous electric
fields.

2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex