Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Modeling Smectic Layers in Confined Geometries: Order Parameter and
  Defects   We identify problems with the standard complex order parameter formalism for
smectic-A (SmA) liquid crystals, and discuss possible alternative descriptions
of smectic order. In particular, we suggest an approach based on the real
smectic density variation rather than a complex order parameter. This approach
gives reasonable numerical results for the smectic layer configuration and
director field in sample geometries, and can be used to model smectic liquid
crystals under nanoscale confinement for technological applications.

14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an