Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Carbonyl Vibrational Wave Packet Circulation in Mn$_2$(CO)$_{10}$ Driven
  by Ultrashort Polarized Laser Pulses   The excitation of the degenerate $E_1$ carbonyl stretching vibrations in
dimanganese decacarbonyl is shown to trigger wave packet circulation in the
subspace of these two modes. On the time scale of about 5 picoseconds
intramolecular anharmonic couplings do not cause appreciable disturbance, even
under conditions where the two $E_1$ modes are excited by up to about two
vibrational quanta each. The compactness of the circulating wave packet is
shown to depend strongly on the excitation conditions such as pulse duration
and field strength. Numerical results for the solution of the seven-dimensional
vibrational Schr\"odinger equation are obtained for a density functional theory
based potential energy surface and using the multi-configuration time-dependent
Hartree method.

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The categories of this paper are: bayes-an
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: mtrl-th
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The categories of this paper are: nlin
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The categories of this paper are: cs
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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: eess
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The categories of this paper are: funct-an
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The categories of this paper are: gr-qc
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The categories of this paper are: chem-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: acc-phys