Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Vibrational spectroscopy of H2+: hyperfine structure of two-photon
  transitions   We present the computation of two-photon transition spectra between
ro-vibrational states of the H2+ molecular ion, including the effects of
hyperfine structure and excitation polarization. The reduced two-photon matrix
elements are obtained by means of a variational method. We discuss the
implications of our results for high-resolution spectroscopy of H2+.

33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas