Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Molecular simulation study of polar order in orthogonal bent core
  smectic liquid crystals   We explore the phase behavior and structure of orthogonal smectic liquid
crystals consisting of bent-core molecules (BCMs) by means of Monte Carlo
molecular simulations. A simple athermal molecular model is introduced that
describes the basic features of the BCMs. Phase transitions between uniaxial
and biaxial (antiferroelectric) orthogonal smectics are obtained. The results
indicate the presence of local in-plane polar correlations in the uniaxial
smectic phase. The macroscopic uniaxial-biaxial transformation is rationalized
in terms of local polar correlations giving rise to polar domains. The size of
these polar domains grows larger under the action of an external vector field
and their internal ordering is enhanced, leading to field-induced biaxial
order-disorder transitions.

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The categories of this paper are: eess
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
8
The categories of this paper are: hep-ex
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga