Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thallium 7p lifetimes derived from experimental data and ab initio
  calculations of scalar polarizabilities   Two different theoretical methods have been used to complete a new
calculation of polarizability in the thallium 6p_{1/2}, 7s, and 7p_{1/2}
states. The predictions of the two methods agree to within 1% for the 6p_{1/2}
and 7s states and 2% for 7p_{1/2} state. We find that the theoretical
expression for the 6p_{1/2} - 7s transition polarizability difference is
dominated (greater than 90% contribution) by mixing of the 7s state with the
7p_{1/2} and 7p_{3/2} states. By comparing the theoretical expression to an
existing Stark shift measurement [Doret et al., Phys. Rev. A 66, 052504
(2002)], new, highly-accurate values for the thallium 7p excited-state
lifetimes have been extracted. The scalar polarizability of the 7p_{1/2} state
is also computed, anticipating an experimental determination of this quantity,
which will then enable a high-precision determination of the
6d_{j}-7p_{j^{\prime}} transition rates and provide a benchmark test of the two
theoretical approaches in the near future.

31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
1
The categories of this paper are: cs
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
14
The categories of this paper are: math-ph