Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rayleigh-B\'enard Instability in Graphene   Motivated by the observation that electrons in graphene, in the hydrodynamic
regime of transport, can be treated as a two-dimensional ultra-relativistic gas
with very low shear viscosity, we examine the existence of the
Rayleigh-B\'enard instability in a massless electron-hole plasma. Firstly, we
perform a linear stability analysis, derive the leading contributions to the
relativistic Rayleigh number, and calculate the critical value above which the
instability develops. By replacing typical values for graphene, such as thermal
conductivity, shear viscosity, temperature, and sample sizes, we find that the
instability might be experimentally observed in the near future. Additionally,
we have performed simulations for vanishing reduced chemical potential and
compare the measured critical Rayleigh number with the theoretical prediction,
finding good agreement.

16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
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The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
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The categories of this paper are: eess