Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Improved characterization of Feshbach resonances and interaction
  potentials between $^{23}$Na and $^{87}$Rb atoms   The ultracold mixture of \Na and \Rb atoms has become an important system for
investigating physics in Bose-Bose atomic mixtures and for forming ultracold
ground-state polar molecules. In this work, we provide an improved
characterization of the most commonly used Feshbach resonance near 347.64 G
between \Na and \Rb in their absolute ground states. We form Feshbach molecules
using this resonance and measure their binding energies by dissociating them
via magnetic field modulation. We use the binding energies to refine the
singlet and triplet potential energy curves, using coupled-channel bound-state
calculations. We then use coupled-channel scattering calculations on the
resulting potentials to produce a high-precision mapping between magnetic field
and scattering length. We also observe 10 additional $s$-wave Feshbach
resonances for \Na and \Rb in different combinations of Zeeman sublevels of the
$F = 1$ hyperfine states. Some of the resonances show 2-body inelastic decay
due to spin exchange. We compare the resonance properties with coupled-channel
scattering calculations that full take account of inelastic properties.

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The categories of this paper are: hep-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-th
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
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The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
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The categories of this paper are: gr-qc
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
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The categories of this paper are: dg-ga
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The categories of this paper are: econ
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The categories of this paper are: acc-phys