Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Cone Phase of Liquid Crystals: Triangular Lattice of Double-Tilt
  Cylinders   We predict the existence of a new defect-lattice phase near the nematic -
smectic-C (NC) transition. This tilt- analogue of the blue phase is a lattice
of double-tilt cylinders. We discuss the structure and stability of the cone
phase. We suggest that many `nematics' exhibiting short range layering and tilt
order may in fact be in the molten cone phase, which is a line liquid.

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The categories of this paper are: supr-con
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The categories of this paper are: nlin
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The categories of this paper are: gr-qc
3
The categories of this paper are: physics
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The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
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The categories of this paper are: q-fin
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: ao-sci
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The categories of this paper are: acc-phys
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The categories of this paper are: quant-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: eess
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The categories of this paper are: stat