Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Coulomb drag as a measure of trigonal warping in doped graphene   I suggest to use the effect of Coulomb drag between two closely positioned
graphite monolayers (graphene sheets) for experimental measurement of the
strength of weak non-linearities of the spectrum in graphene. I consider
trigonal warping as a representative mechanism responsible for the drag effect.
Since graphene is relatively defect-free, I evaluate the drag conductivity in
the ballistic regime and find that it is proportional to the fourth power of
the warping strength.

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The categories of this paper are: gr-qc
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The categories of this paper are: ao-sci
25
The categories of this paper are: patt-sol
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The categories of this paper are: nlin
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The categories of this paper are: math
12
The categories of this paper are: nucl-th
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The categories of this paper are: math-ph
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The categories of this paper are: q-fin
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The categories of this paper are: hep-th
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The categories of this paper are: eess
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The categories of this paper are: hep-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: astro-ph
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The categories of this paper are: funct-an
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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int