Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: How glassy are orientational dynamics of rodlike molecules near the
  isotropic-nematic transition?   In an attempt to quantitatively characterize the recently observed slow
dynamics in the isotropic and nematic phase of liquid crystals, we investigate
the single-particle orientational dynamics of rodlike molecules across the
isotropic-nematic transition in computer simulations of a family of model
systems of thermotropic liquid crystals. Several remarkable features of glassy
dynamics are on display including non-exponential relaxation, dynamical
heterogeneity, and non-Arrhenius temperature dependence of the orientational
relaxation time. In order to obtain a quantitative measure of glassy dynamics
in line with the estbalished methods in supercooled liquids, we construct a
relaxation time versus scaled inverse temperature plot, and demonstrate that
one can indeed define a 'fragility index' for thermotropic liquid crystals,
that depends on density and aspect ratio. The values of the fragility parameter
are surprisingly in the range one observed for glass forming liquids. A
plausible correlation between the energy landscape features and the observed
fragility is discussed.

13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph