We improve so-called "naive" and "mirror" models for the positive and negative parity nucleons, N and N\*, by introducing non-linear terms allowed by chiral symmetry. Both models in this improvement reproduce the observed nucleon axial charge in free space and reveal interesting density dependence o
The dielectric properties of the massive medium at finite density
โ Scribed by Jin Meng; Jiarong Li
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 235 KB
- Volume
- 730
- Category
- Article
- ISSN
- 0375-9474
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