Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the stability problem in the O(N) nonlinear sigma model   The stability problem for the O(N) nonlinear sigma model in the 2+\epsilon
dimensions is considered. We present the results of the 1/N^{2} order
calculations of the critical exponents (in the 2<d<4 dimensions) of the
composite operators relevant for this problem. The arguments in the favor of
the scenario with the conventional fixed point are given.

3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
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The categories of this paper are: stat
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
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The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
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The categories of this paper are: comp-gas
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The categories of this paper are: bayes-an
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The categories of this paper are: math
31
The categories of this paper are: ao-sci