Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Relativistic calculations of the ground state energies and the critical
  distances for one-electron homonuclear quasi-molecules   The ground-state energies of one-electron homonuclear quasi-molecules for the
nuclear charge number in the range Z=1-100 at the "chemical" distances R= 2/Z
(in a.u.) are calculated. The calculations are performed for both point- and
extended-charge nucleus cases using the Dirac-Fock-Sturm approach with the
basis functions constructed from the one-center Dirac-Sturm orbitals. The
critical distances R_cr, at which the ground-state level reaches the edge of
the negative-energy Dirac continuum, are calculated for homonuclear
quasi-molecules in the range: Z=85-100. It is found that in case of U_2^{183+}
the critical distance R_cr = 38.42 fm for the point-charge nuclei and R_cr =
34.72 fm for extended nuclei.

17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex
2
The categories of this paper are: math