Structure of the Nuclear Force in a Chiral Quark-Diquark Model(Nuclear Physics)
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概要
- 論文の詳細を見る
We study the structure of the nuclear force using a Lagrangian derived through the hadronization of a chiral quark and diquark model. A generalized trace-log formula is expanded in powers of meson and nucleon fields. It is shown that the nuclear force is composed of long and medium range parts of chiral meson exchanges and short range parts of a quark-diquark loop of nonlocal nature. In a local approximation, the quark-diquark loop contains, among many terms, two types of interactions ; one is of an attractive scalar iso-scalar type, and the other is of a repulsive vector iso-scalar type. The ranges of the scalar and vector interactions are similar to those of sigma (σ) and omega (ω) meson exchanges if the size of the nucleon core of the quark-diquark bound state is adjusted appropriately.
- 理論物理学刊行会の論文
- 2004-06-25
著者
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Hosaka Atsushi
Research Center For Nuclear Physics (rcnp)
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Hosaka Atsushi
Research Center For Nuclear Physics (rcnp) Osaka University
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Hosaka Atsushi
Reseaich Center For Nuclear Physics (rcnp)
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NAGATA Keitaro
Research Center for Nuclear Physics (RCNP), Osaka University
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Nagata Keitaro
Research Center For Nuclear Physics (rcnp) Osaka University
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HOSAKA Atsushi
Department of Physics, University of Pennsylvania
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Hosaka Atsushi
Department of Radiology, The University of Tokyo
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