Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fr\"{o}hlich Condensate of Phonons in Optomechanical Systems   We propose that the optomechanical systems can be potential platforms to
implement the Fr\"{o}hlich condensate of phonons. We consider a one-dimensional
array of membranes coupled to the cavity field via a quadratic interaction, and
the cavity is pumped by an external laser. Analytical and numerical results
predict that the high phonon occupancy of the lowest or highest mechanical mode
is achievable depending on the detuning of the driving laser, the optomechnical
strength, and the temperature. The decoherence of the Fr\"{o}hlich condensate
can be largely suppressed by the large number of membranes. Our results shed
light on narrow-linewidth phonon laser, energy conversion/transfer, and
efficient multimode cooling.

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The categories of this paper are: bayes-an
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The categories of this paper are: atom-ph
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The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: ao-sci
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The categories of this paper are: mtrl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: math-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: chem-ph
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The categories of this paper are: q-alg
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The categories of this paper are: astro-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: nlin
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The categories of this paper are: q-bio
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The categories of this paper are: alg-geom