Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Reduction of the spin-orbit potential in light drip-line nuclei   The isospin dependence of the spin-orbit interaction in light neutron rich
nuclei is investigated in the framework of relativistic mean field theory. The
magnitude of the spin-orbit potential is considerably reduced in drip line
nuclei, resulting in smaller energy splittings between spin-orbit partners. The
effect does not depend on the parametrization of the effective Lagrangian. The
results are compared with corresponding calculations in the non-relativistic
Skyrme model.

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The categories of this paper are: hep-lat
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The categories of this paper are: eess
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
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The categories of this paper are: solv-int
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The categories of this paper are: plasm-ph
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The categories of this paper are: econ
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The categories of this paper are: q-fin
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The categories of this paper are: comp-gas
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The categories of this paper are: gr-qc
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The categories of this paper are: nlin
0
The categories of this paper are: hep-ph