Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Elasticity in the Gauge Theory of Active Nematics with Topological
  Defects   We analyze the phase behavior of lyotropic nematic liquid crystals in the
self-organizing flow, viz. so called active nematics (AN). Their elastic
properties are mutually caused by evolution of topological defects (for
instance, disclinations and boojums) and the flow regime. Such changes in
elasticity of AN comparing with conventional inactive ones set the new working
characteristics of these materials, have an influence on their switchable and
tunable properties. In this work, we study the uniaxial droplet AN phases with
topological defects in their collective flow, we apply the gauge string-like
theory using the method of differential forms on a lattice interchanging the
drive-force concept. The results of our numerical modeling with Monte Carlo
method show, that under certain conditions, the type of the phase transition
from nematic to isotropic (N-I) phase and the thermodynamical characteristics
in an active regime may differ from such one in the conventional lyotropic
nematcis.

23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
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The categories of this paper are: q-fin
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The categories of this paper are: cmp-lg
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The categories of this paper are: comp-gas
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The categories of this paper are: eess