Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single-branch theory of ultracold Fermi gases with artificial Rashba
  spin-orbit coupling   We consider interacting ultracold fermions subject to Rashba spin-orbit
coupling. We construct a single-branch interacting theory for the Fermi gas
when the system is dilute enough so that the positive helicity branch is not
occupied at all in the non-interacting ground state. We show that the theory is
renormalizable in perturbation theory and therefore yields a model of polarized
fermions that avoids a multi-channel treatment of the problem. Our results open
the path towards a much more straightforward approach to the many-body physics
of cold atoms subject to artificial vector potentials.

9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th