Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Density Functional Theory studies of cluster states in nuclei   The framework of nuclear energy density functionals is applied to a study of
the formation and evolution of cluster states in nuclei. The relativistic
functional DD-ME2 is used in triaxial and reflection-asymmetric relativistic
Hartree-Bogoliubov calculations of relatively light $N = Z$ and neutron-rich
nuclei. The role of deformation and degeneracy of single-nucleon states in the
formation of clusters is analysed, and interesting cluster structures are
predicted in excited configurations of Be, C, O, Ne, Mg, Si, S, Ar and Ca $N =
Z$ nuclei. Cluster phenomena in neutron-rich nuclei are discussed, and it is
shown that in neutron-rich Be and C nuclei cluster states occur as a result of
molecular bonding of $\alpha$-particles by the excess neutrons, and also that
proton covalent bonding can occur in $^{10}$C.

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The categories of this paper are: math-ph
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The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
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The categories of this paper are: eess
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
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The categories of this paper are: stat
37
The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
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The categories of this paper are: cond-mat
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The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph