New treatment of the chiral quark mean field model
β Scribed by P. Wang; D.B. Leinweber; A.W. Thomas; A.G. Williams
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 234 KB
- Volume
- 744
- Category
- Article
- ISSN
- 0375-9474
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β¦ Synopsis
We perform a study of infinite hadronic matter, finite nuclei and hypernuclei with an improved method of calculating the effective baryon mass. A detailed study of the predictions of the model is made in comparison with the available data and the level of agreement is generally very good.
Comparison with an earlier treatment shows relatively minor differences at or below normal nuclear matter density, while at high density the improved calculation is quite different. In particular, we find no phase transition corresponding to chiral symmetry restoration in high density nuclear matter.
π SIMILAR VOLUMES
A quark-meson coupling model based on SU(3) L Γ SU(3) R symmetry and scale invariance is proposed. We apply this chiral SU(3) quark mean-field model to investigate strange hadronic matter including Ξ, Ξ£ and Ξ hyperons. With the symmetry-breaking term, all the hyperon potentials are reasonable. The e
We extend the quark mean-field model to the study of Ξ hypernuclei. Without adjusting parameters, the properties of Ξ hypernuclei can be described reasonably well. The small spin-orbit splittings for Ξ in hypernuclei are achieved, while the Ξ single-particle energies in the present model are slightl
We apply the chiral SU(3) quark mean field model to investigate the finite nuclei. We find that the combined confining potential Ο C c is more proper to describe finite nuclei compared with the scalar and scalar-vector potentials. The hypernuclei and multi-strange objects which include and are discu