核力の荷電対称性と中間子混合(媒質効果、核力1,多体系の場の理論の新展開,研究会報告)

概要

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Preliminary calculations of including the off-shell correction for the ρ-ω and π-η meson-mixing amplitudes, and a. review of the related problems in the two-nucleon systems and the nuclear structure are given. Calculation of the amplitudes is performed, taking account of the density-dependence as well as the momentum-dependence, in order to apply to the nuclear many-body systems. The π-η mixing contribution to the observables which relate nuclear structure is found to survive the off-shell correction, although it is found to be sensitive to small change of the mixing amplitude. The other charge-symmetry-breaking (CSB) sources, e.g., the quark mass difference effect in the direct gluon-exchange between the nucleons, are disccused with considering the correction to the meson-mixing CSB force.
素粒子論グループ素粒子研究編集部の論文
2000-10-20