Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Resonance and continuum states in weakly bound systems   Linear response theories in the continuum capable of describing continuum
spectra and dynamical correlations are presented. Our formulation is
essentially the same as the continuum random-phase approximation (RPA) but
suitable for uniform grid representation in the three-dimensional (3D)
Cartesian coordinate assuming no spatial symmetry. Effects of the continuum are
taken into account either by solving equations iteratively with a retarded
Green's function or by an absorbing boundary condition. The methods are applied
to giant resonances in a deformed nucleus 12C.

8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
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The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
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The categories of this paper are: solv-int
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The categories of this paper are: hep-lat
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The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ