Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lifetime of angular momentum in a rotating strongly interacting Fermi
  gas   We investigate the lifetime of angular momentum in an ultracold strongly
interacting Fermi gas, confined in a trap with controllable ellipticity. To
determine the angular momentum we measure the precession of the radial
quadrupole mode. We find that in the vicinity of a Feshbach resonance the
deeply hydrodynamic behavior in the normal phase leads to a very long lifetime
of the angular momentum. Furthermore, we examine the dependence of the decay
rate of the angular momentum on the ellipticity of the trapping potential and
the interaction strength. The results are in general agreement with the
theoretically expected behavior for a Boltzmann gas.

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The categories of this paper are: comp-gas
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The categories of this paper are: patt-sol
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The categories of this paper are: eess
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The categories of this paper are: mtrl-th
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The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
18
The categories of this paper are: econ
16
The categories of this paper are: stat
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
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The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics
2
The categories of this paper are: math