Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: QED tests with highly-charged ions   The current status of bound state quantum electrodynamics calculations of
transition energies for few-electron ions is reviewed. Evaluation of one and
two body QED correction is presented, as well as methods to evaluate many-body
effects that cannot beevaluated with present-day QED calculations. Experimental
methods, their evolution over time, as well as progress in accuracy are
presented. A detailed, quantitative, comparison between theory and experiment
is presented for transition energies in few-electron ions. In particular the
impact of the nuclear size correction on the quality of QED tests as a function
of the atomic number is discussed.The cases of hyperfine transition energies
and of bound-electron Land{\'e} $g$-factor are also considered.

23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
2
The categories of this paper are: math