Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Shapiro-like Resonance in Ultracold Molecule Production via an
  Oscillating Magnetic Field   We study the process of production of ultracold molecules from ultracold
atoms using a sinusoidally oscillating magnetic field modulation. When the
magnetic field is resonant roughly with the molecular binding energy,
Shapiro-like resonances are observed. Their resonance profiles are well fitted
by the Lorentzian functions. The line widths depend on both the amplitude and
the duration of the applied modulations, and are found to be dramatically
broadened by thermal dephasing effect. The resonance centers shift due to both
many-body effect and finite temperature effect. Our theory is consistent with
recent experiment (S. T. Thompson, E. Hodby, and C. E. Wieman, Phys. Rev. Lett.
95, 190404 (2005)). Our model predicts a 1/3 ceiling for the molecular
production yield in uncondensed ultracold atomic clouds for a long coupling
time, while for the condensed atoms the optimal conversion yield could be
beyond the limit.

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The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
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The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
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The categories of this paper are: q-alg
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The categories of this paper are: hep-th
2
The categories of this paper are: math
9
The categories of this paper are: nlin
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The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
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The categories of this paper are: physics
0
The categories of this paper are: hep-ph