Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Inverse cascade and symmetry breaking in rapidly-rotating Boussinesq
  convection   In this paper we present numerical simulations of rapidly-rotating
Rayleigh-B\'enard convection in the Boussinesq approximation with stress-free
boundary conditions. At moderately low Rossby number and large Rayleigh number,
we show that a large-scale depth-invariant flow is formed, reminiscent of the
condensate state observed in two-dimensional flows. We show that the
large-scale circulation shares many similarities with the so-called vortex, or
slow-mode, of forced rotating turbulence. Our investigations show that at a
fixed rotation rate the large-scale vortex is only observed for a finite range
of Rayleigh numbers, as the quasi-two-dimensional nature of the flow disappears
at very high Rayleigh numbers. We observe slow vortex merging events and find a
non-local inverse cascade of energy in addition to the regular direct cascade
associated with fast small-scale turbulent motions. Finally, we show that
cyclonic structures are dominant in the small-scale turbulent flow and this
symmetry breaking persists in the large-scale vortex motion.

19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
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The categories of this paper are: q-alg
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
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The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci