Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Calculation of isotope shifts for cesium and francium   We perform ab initio calculations of isotope shifts for isotopes of cesium
(from A=123 to A=137) and francium (from A=207 to A=228). These calculations
start from the relativistic Hartree-Fock method and make use of several
techniques to include correlations. The field (volume) isotope shift is
calculated by means of an all-order correlation potential method and within the
singles-doubles partial triples linearized coupled-cluster approach. Many-body
perturbation theory in two different formulations is used to calculate the
specific mass shift. We discuss the strong points and shortcomings of the
different approaches and implications for parity nonconservation in atoms.
Changes in nuclear charge radii are found by comparing the present calculations
with experiment.

37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math