Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Relativistic corrections for the ground electronic state of molecular
  hydrogen   We recalculate the leading relativistic corrections for the ground electronic
state of the hydrogen molecule using variational method with explicitly
correlated functions which satisfy the interelectronic cusp condition. The new
computational approach allowed for the control of the numerical precision which
reached about 8 significant digits. More importantly, the updated theoretical
energies became discrepant with the known experimental values and we conclude
that the yet unknown relativistic recoil corrections might be larger than
previously anticipated.

9
The categories of this paper are: nlin
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
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
36
The categories of this paper are: cmp-lg
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc