Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Two-Element Mixture of Bose and Fermi Superfluids   We report on the production of a stable mixture of bosonic and fermionic
superfluids composed of the elements $^{174}$Yb and $^6$Li which feature a
strong mismatch in mass and distinct electronic properties. We demonstrate
elastic coupling between the superfluids by observing the shift in dipole
oscillation frequency of the bosonic component due to the presence of the
fermions. The measured magnitude of the shift is consistent with a mean-field
model and its direction determines the previously unknown sign of the
interspecies scattering length to be positive. We also observe the exchange of
angular momentum between the superfluids from the excitation of a scissors mode
in the bosonic component through interspecies interactions. We explain this
observation using an analytical model based on superfluid hydrodynamics.

26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
2
The categories of this paper are: math
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int