Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quasiparticle lifetime in ultracold fermionic mixtures with density and
  mass imbalance   We show that atomic Fermi mixtures with density and mass imbalance exhibit a
rich diversity of scaling laws for the quasiparticle decay rate beyond the
quadratic energy and temperature dependence of conventional Fermi liquids. For
certain densities and mass ratios, the decay rate is linear whereas in other
cases it exhibits a plateau. Remarkably, this plateau extends from the deeply
degenerate to the high temperature classical regime of the light species. Many
of these scaling laws are analogous to what is found in very different systems
including dirty metals, liquid metals, and high temperature plasmas. The Fermi
mixtures can in this sense span a whole range of seemingly diverse and separate
physical systems. Our results are derived in the weakly interacting limit
making them quantitatively reliable. The different regimes can be detected with
radio-frequency spectroscopy.

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The categories of this paper are: comp-gas
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The categories of this paper are: alg-geom
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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
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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: nlin
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The categories of this paper are: cs
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The categories of this paper are: econ
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The categories of this paper are: q-alg
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: stat
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The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol