A Relativistic Mean-Field Model with Density-Dependent Meson-Nucleon Couplings | Zendy

Koichi Minagawa | Zendy; Masahiro Kawabata | Zendy; Koichi Saito | Zendy

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A Relativistic Mean-Field Model with Density-Dependent Meson-Nucleon Couplings

Author(s) -

Koichi Minagawa,

Masahiro Kawabata,

Koichi Saito

Publication year - 2007

Publication title -

progress of theoretical physics

Language(s) - English

Resource type - Journals

eISSN - 1347-4081

pISSN - 0033-068X

DOI - 10.1143/ptp.118.175

Subject(s) - physics , nuclear matter , meson , nucleon , particle physics , mean field theory , nuclear physics , field (mathematics) , quantum electrodynamics , quantum mechanics , mathematics , pure mathematics

Within the relativistic mean-field approach, we extend the Miyazaki model,where the NN$\sigma$ and NN$\omega$ interactions are modified to suppress thecouplings between positive- and negative-energy states of a nucleon in matter.Assuming appropriate density-dependence of the meson-nucleon couplings, westudy nuclear matter and finite nuclei. The model can reproduce the observedproperties of $^{16}$O and $^{40}$Ca well. We also examine if the model isnatural.Comment: 6 pages, 3 figure

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