Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Square-integrable eigenfunctions in quantizing the Bateman oscillator
  model   In a recent paper [Phys. Lett. A 383 (2019) 2836; arXiv:1906.05121
[quant-ph]], Bagarello, Gargano, and Roccati have claimed that no
square-integrable vacuum exists in quantizing the Bateman oscillator model. In
this paper, we rebut their claim by actually deriving the square-integrable
vacuum eigenfunction using a common procedure. We see that no problems occur in
quantizing the Bateman oscillator model.

25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
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The categories of this paper are: bayes-an
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
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The categories of this paper are: stat
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
0
The categories of this paper are: hep-ph