Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The two-angle model and the phase diagram for Chromatin   We have studied the phase diagram for chromatin within the framework of the
two-angle model. Rather than improving existing models with finer details our
main focus of the work is getting mathematically rigorous results on the
structure, especially on the excluded volume effects and the effects on the
energy due to the long-range forces and their screening. Thus we present a
phase diagram for the allowed conformations and the Coulomb energies.

29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph