Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chiral Mesophases of DNA   In the hexagonal columnar phase of chiral polymers a bias towards cholesteric
twist competes with braiding along an average direction. When the chirality is
strong, topological defects proliferate, leading to either a tilt grain
boundary phase or a new ``moire state'' with twisted bond order. This moire
phase can melt leading to a new phase: the chiral hexatic. I will discuss some
recent experimental results from the NIH on DNA liquid crystals in the context
of these theories.

5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph