Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Continuum QRPA in the coordinate space representation   We formulate a quasi-particle random phase approximation (QRPA) in the
coordinate space representation. This model is a natural extension of the RPA
model of Shlomo and Bertsch to open-shell nuclei in order to take into account
pairing correlations together with the coupling to the continuum. We apply it
to the $^{120}$Sn nucleus and show that low-lying excitation modes are
significantly influenced by the pairing effects although the effects are
marginal in the giant resonance region. The dependence of the pairing effect on
the parity of low-lying collective mode is also discussed.

19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
8
The categories of this paper are: hep-ex