Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Critical behavior of the PT-symmetric $i\phi^3$ quantum field theory   It was shown recently that a PT-symmetric $i\phi^3$ quantum field theory in
$6-\epsilon$ dimensions possesses a nontrivial fixed point. The critical
behavior of this theory around the fixed point is examined and it is shown that
the corresponding phase transition is related to the existence of a nontrivial
solution of the gap equation. The theory is studied first in the mean-field
approximation and the critical exponents are calculated. Then, it is examined
beyond the mean-field approximation by using renormalization-group techniques,
and the critical exponents for $6-\epsilon$ dimensions are calculated to order
$\epsilon$. It is shown that because of its stability the PT-symmetric
$i\phi^3$ theory has a higher predictive power than the conventional $\phi^3$
theory. A comparison of the $i\phi^3$ model with the Lee-Yang model is given.

36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat