Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Geometric contribution to the Goldstone mode in spin-orbit coupled Fermi
  superfluids   The so-called quantum metric tensor is a band-structure invariant whose
measure corresponds to the quantum distance between nearby states in the
Hilbert space, characterizing the geometry of the underlying quantum states. In
the context of spin-orbit coupled Fermi gases, we recently proposed that the
quantum metric has a partial control over all those superfluid properties that
depend explicitly on the mass of the superfluid carriers, i.e., the
effective-mass tensor of the corresponding (two- or many-body) bound state.
Here we scrutinize this finding by analyzing the collective phase and amplitude
excitations at zero temperature. In particular to the Goldstone mode, we
present extensive numerical calculations for the Weyl and Rashba spin-orbit
couplings, revealing that, despite being small, the geometric contribution is
solely responsible for the nonmonotonic evolution of the sound velocity in the
BCS-BEC crossover.

22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph