Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cluster Approximation for the Contact Process   The one-dimensional contact process is analyzed by a cluster approximation.
In this approach, the hierarchy of rate equations for the densities of finite
length empty intervals are truncated under the assumption that adjacent
intervals are not correlated. This assumption yields a first order phase
transition from an active state to the adsorbing state. Despite the apparent
failure of this approximation in describing the critical behavior, our approach
provides an accurate description of the steady state properties for a
significant range of desorption rates. Moreover, the resulting critical
exponents are closer to the simulation values in comparison with site
mean-field theory.

25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex