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Comparative study of hyperon-nucleon interactions of quark model and chiral effective field theory by low-momentum equivalent interactions and matrices
Hyperon-nucleons interactions constructed by two frameworks, the
Kyoto-Niigata SU quark model and the chiral effective field theory, are
compared by investigating equivalent interactions in a low-momentum space and
in addition by calculating hyperon single-particle potentials in the
lowest-order Brueckner theory in symmetric nuclear matter. Two descriptions are
shown to give similar matrix elements in most channels after renormalizing high
momentum components. Although the range of the interaction is
different in two potentials, the single-particle potential in nuclear
matter is very similar. The -nucleus and -nucleus potentials are
also found to be similar. These predictions are to be confronted with
forthcoming experimental data.Comment: 8 pages, 7 figures. To appear in Phys. Rev.
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