Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rovibrational energy levels of the hydrogen molecule through
  nonadiabatic perturbation theory   We present an accurate theoretical determination of rovibrational energy
levels of the hydrogen molecule and its isotopologues in its electronic ground
state. We consider all significant corrections to the Born-Oppenheimer
approximation, obtained within nonadiabatic perturbation theory, including the
mixed nonadiabatic-relativistic effects. Quantum electrodynamic corrections in
the leading $\alpha^5\,m$ and the next-to-leading $\alpha^6\,m$ orders, as well
as finite nuclear size effect, are also taken into account but within the
Born-Oppenheimer approximation only. Final results for the transition
wavelength between rovibrational levels achieve accuracy of the order of
$10^{-3}$--$10^{-7}$ cm$^{-1}$, and are provided by simple to use computer
code.

7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph