Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Microscopic study on the origin of the rotational band of nuclei   The origin of the rotational band of nuclei has been investigated by the
angular momentum projection (AMP) on the axial Hartree-Fock solutions, by using
the semi-realistic effective Hamiltonian M3Y-P6. The rotational energy is
decomposed into contributions of the individual terms of the Hamiltonian, and
their ratios to the total rotational energy are calculated. Except for light or
weakly-deformed nuclei, the ratios of the individual terms of the Hamiltonian
are insensitive to nuclides and deformation. The contributions of kinetic
energies are large and close to the rigid-rotor values, although those of
central forces are sizable. For light or weakly-deformed nuclei, the ratios
significantly depend on nuclei and deformation. The contributions of noncentral
forces are not negligible. Regardless of nuclides, the attractive forces
decrease the moment-of-inertia, and the repulsive forces increase it. A general
formula for the rotational energy is derived on the basis of the AMP, which
suggests that higher-order terms of the cumulant expansion play roles in the
rotational energy and the moment-of-inertia for light or weakly-deformed
nuclei.

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The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
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The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio