Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pseudospin Dynamical Symetry in Nuclei   Pseudospin symmetry has been useful in understanding atomic nuclei. We review
the arguments that this symmetry is a relativistic symmetry. The condition for
this symmetry is that the sum of the vector and scalar potentials in the Dirac
Hamiltonian is a constant. We give the generators of pseudospin symmetry. We
review some of the predictions that follow from this insight into the
relativistic origins of pseudospin symmetry. Since in nuclei the sum of the
scalar and vector potentials is not zero but is small, we discuss preliminary
investigations into the conditions on the potentials to produce partial dynamic
pseudospin symmetry. Finally we show that approximate pseudospin symmetry in
nuclei predicts approximate spin symmetry in anti-nucleon scattering from
nuclei.

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The categories of this paper are: plasm-ph
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The categories of this paper are: q-fin
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The categories of this paper are: hep-th
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The categories of this paper are: gr-qc
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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: nlin
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The categories of this paper are: hep-lat
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The categories of this paper are: math
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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: bayes-an
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The categories of this paper are: eess
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The categories of this paper are: hep-ex
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The categories of this paper are: chem-ph
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The categories of this paper are: q-bio