Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fluctuation-Driven 1st-Order Isotropic-to-Tetrahedratic Phase Transition   Motivated in part by recent experiments on liquid crystals with bent-core
molecules, which are observed to display a spontaneous chiral symmetry
breaking, we introduce a field theory of a 3rd-rank tensor order parameter
T^{ijk} to describe the isotropic-to-tetrahedratic phase transition that we
predict to take place in these materials. We study the critical properties of
the corresponding phase transition and find that this transition, continuous at
the mean-field level, is generically driven 1st-order by thermal fluctuations.

19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an