Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Competition brings out the best: Modeling the frustration between
  curvature energy and chain stretching energy of lyotropic liquid crystals in
  bicontinuous cubic phases   It is commonly considered that the frustration between the curvature energy
and the chain stretching energy plays an important role in the formation of
lyotropic liquid crystals in bicontinuous cubic phases. Theoretic and numeric
calculations were performed for two extreme cases: Parallel surfaces eliminate
the variance of the chain length; constant mean curvature surfaces eliminate
the variance of the mean curvature. We have implemented a model with Brakke's
Surface Evolver which allows a competition between the two variances. The
result shows a compromise of the two limiting geometries. With data from real
systems, we are able to recover the G--D--P phase sequence which was observed
in experiments.

10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga