Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Critical properties of the Antiferromagnetic \RP2$ model in three
  dimensions   We study the behavior of the antiferromagnetic RP$^2$ model in $d=3$. The
vacuum structure is analyzed in the critical and low temperature regions,
paying special attention to the spontaneous symmetry breaking pattern. Near the
critical point we observe a full breakdown of the O(3) symmetry of the action.
Several methods for computing critical exponents are compared. We conclude that
the most solid determination is obtained using a measure of the correlation
length. Corrections-to-scaling are parameterized, yielding a very accurate
determination of the critical coupling and a 5\% error measure of the related
exponent. This is used to estimate the systematic errors due to finite-size
effects.

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The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys