Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ultralong-Range Rydberg Molecules in a Divalent-Atomic System   We report the creation of ultralong-range Sr$_2$ molecules comprising one
ground-state $5s^2$ $^1S_0$ atom and one atom in a $5sns$ $^3S_1$ Rydberg state
for $n$ ranging from 29 to 36. Molecules are created in a trapped ultracold
atomic gas using two-photon excitation near resonant with the $5s5p$ $^3P_1$
intermediate state, and their formation is detected through ground-state atom
loss from the trap. The observed molecular binding energies are fit with the
aid of first-order perturbation theory that utilizes a Fermi pseudopotential
with effective $s$-wave and $p$-wave scattering lengths to describe the
interaction between an excited Rydberg electron and a ground-state Sr atom.

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The categories of this paper are: nlin
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The categories of this paper are: quant-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: econ
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: patt-sol
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn
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The categories of this paper are: gr-qc
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The categories of this paper are: math
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The categories of this paper are: funct-an
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con