Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Singular spacetime and quantum probe   We examine the dependence of quantization on global properties of a classical
system. Quantization based on local properties may lead to ambiguities and
inconsistency between local and global symmetries of a quantum system. Our
quantization method based on global characteristics has sound foundation.
Presented results give insight into the nature of removable type singularity of
spacetime at the quantum level.

14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys