Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Four-dimensional gonihedric gauge spin system   We perform Monte Carlo simulations of a four-dimensional gauge invariant spin
system which describes random surfaces with gonihedric action. We develop the
analogy between the flat-crumpled phase transition of the lattice surface model
and the liquid-gas phase transition of non-ideal gases, and identify the
self-intersection coupling constant $k$ of the surface model with the pressure
$P$. As $k$ increases the system moves to a critical point in complete analogy
with the situation for non-ideal gases, where the liquid and the gas phases
approach each other with increasing $P$. We measure vacuum expectation values
of various operators and the corresponding critical indices.

3
The categories of this paper are: physics
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg