Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ab initio shell model with a genuine three-nucleon force for the p-shell
  nuclei   The ab initio no-core shell model (NCSM) is extended to include a realistic
three-body interaction in calculations for p-shell nuclei. The NCSM formalism
is reviewed and new features needed in calculations with three-body forces are
discussed in detail. We present results of first applications to 6,7Li, 6He,
7,8,10Be, 10,11,12B, 12N and 10,11,12,13C using the Argonne V8' nucleon-nucleon
(NN) potential and the Tucson-Melbourne TM'(99) three-nucleon interaction
(TNI). In addition to increasing the total binding energy, we observe a
substantial sensitivity in the low-lying spectra to the presence of the
realistic three-body force and an overall improvement in the level-ordering and
level-spacing in comparison to experiment. The greatest sensitivity occurs for
states where the spin-orbit interaction strength is known to play a role. In
particular, with the TNI we obtain the correct ground-state spin for 10,11,12B
and 12N, contrary to calculations with NN potentials only.

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The categories of this paper are: hep-th
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
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The categories of this paper are: nlin
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The categories of this paper are: econ
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
23
The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
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The categories of this paper are: gr-qc
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The categories of this paper are: acc-phys
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The categories of this paper are: astro-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: atom-ph