Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Reptation of star polymers in a network: Monte Carlo results of
  diffusion coefficients   We report on Monte Carlo results of diffusion coefficients of lattice star
polymers trapped inside a fixed network (de Gennes model). It is found that our
data are in agreement with the Helfand-Pearson exponential factor \alpha=0.29.
For the pre-exponential power law exponent we find \beta=2. In contrast to
existing theoretical predictions, we find that the number of arms f leads to a
pre-exponential factor of the form exp(-0.75 f).

22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg