Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Faddeev description of two-hole one-particle motion and the
  single-particle spectral function   The Faddeev technique is employed to address the problem of describing the
influence of both particle-particle and particle-hole phonons on the
single-particle self-energy. The scope of the few-body Faddeev equations is
extended to describe the motion of two-hole one-particle (two-particle
one-hole) excitations. This formalism allows to sum both particle-particle and
particle-hole phonons, obtained separately in the Random Phase Approximation.
The appearance of spurious solutions for the present application of the Faddeev
method is related to the inclusion of a consistent set of diagrams. The
formalism presented here appears practical for finite nuclei and achieves a
simultaneous inclusion of particle-particle and particle-hole phonons to all
orders while the spurious solutions are properly eliminated.

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The categories of this paper are: astro-ph
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The categories of this paper are: eess
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The categories of this paper are: math-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con
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The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: bayes-an
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The categories of this paper are: gr-qc
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The categories of this paper are: cmp-lg