Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Finite-size and confinement effects in spin-polarized trapped Fermi
  gases   We calculate the energy of a single fermion interacting resonantly with a
Fermi sea of different-species fermions in asymmetric traps, and show that
finite particle numbers and the trap geometry impact the phase structure and
the critical polarization. Our findings contribute to understanding some
experimental discrepancies in spin-polarized Fermi gases as finite-size and
confinement effects.

14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
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The categories of this paper are: nlin
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The categories of this paper are: q-fin
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The categories of this paper are: hep-th
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The categories of this paper are: hep-lat
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex