Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The coil-globule transition of polymers of long rigid monomers connected
  by flexible spacers   A simple model of a polymer with long rigid segments which interact via
excluded volume repulsions and short ranged attractions is proposed. The
coil-globule transition of this model polymer is strongly first order, the
globule is crystalline and the coil which coexists with the globule is swollen.
A virial expansion truncated at low order is shown to provide a very poor
approximation to the free energy and so a cell theory is used to calculate the
free energy of the globule.

35
The categories of this paper are: mtrl-th
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin