Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optomechanics of a Quantum-Degenerate Fermi Gas   We explore theoretically the optomechanical interaction between a light field
and a mechanical mode of ultracold fermionic atoms inside a Fabry-P\'{e}rot
cavity. The low-lying phonon mode of the fermionic ensemble is a collective
density oscillation associated with particle-hole excitations, and is
mathematically analogous to the momentum side-mode excitations of a bosonic
condensate. The mechanical motion of the fermionic particle-hole system behaves
hence as a ``moving mirror.'' We derive an effective system Hamiltonian that
has the form of generic optomechanical systems. We also discuss the
experimental consequences the optomechanical coupling in optical bistability
and in the noise spectrum of the system.

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The categories of this paper are: astro-ph
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The categories of this paper are: cs
31
The categories of this paper are: ao-sci
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
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The categories of this paper are: eess
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The categories of this paper are: nucl-ex
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The categories of this paper are: econ
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
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The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
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The categories of this paper are: dg-ga
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The categories of this paper are: stat
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The categories of this paper are: hep-lat
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The categories of this paper are: patt-sol