Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Asymptotic and interpolation series for the Coulomb three-body systems
  with unit charges   Accurate mass-interpolation and mass-asymptotic formulas are derived for one-
and two-center three-body ions with unit charges. The derived formulas are
applied to predict accurate numerical values of the total energies of the
ground (bound) $1^{1}S(L = 0)-$states in one-center atomic ions $X^{+} e^{-}
e^{-}$ and analogous ground (bound) $1 s \sigma-$states in the two-center,
quasi-adiabatic (or quasi-molecular) $X^{+} X^{+} e^{-}$ ions. We also discuss
a few problems which currently remain unsolved for the $Q^{-1}$ expansions
constructed for the ground (bound) states in few-electron atoms and ions.

11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an