Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Generalized optical potential for weakly bound nuclei. I. Two-cluster
  projectiles   A generalized optical potential for elastic scattering induced by light
nuclei is calculated within the Feshbach projection operator method. The model
explicitly takes into account the contribution of the projectile break-up
continuum treated within a microscopic few-cluster model. In this work we
formulate the model, deriving an explicit expression for the optical potential,
and show ability of the model applying it to deuteron elastic scattering.

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The categories of this paper are: math-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: stat
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The categories of this paper are: chem-ph
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The categories of this paper are: math
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The categories of this paper are: adap-org
4
The categories of this paper are: cond-mat
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The categories of this paper are: hep-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: supr-con
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The categories of this paper are: hep-lat
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The categories of this paper are: q-fin
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The categories of this paper are: q-bio
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: physics