|
|||||
|
|
| Lambda Hypernuclei in a Chiral Hadronic Model | |
| 作者姓名： | 梁银花 郭华 |
| 作者单位： | [1]DepartmentofTechnicalPhysics,andMOEKeyLaboratoryofHeavyIonPhysics,PekingUniversity,Beijing100871／／CentreofNuclearTheoreticalPhysics,NationalLaboratoryofHeavyIonAcceleratorofLanzhou,Lanzhou730000 [2]DepartmentofTechnicalPhysics,andMOEKeyLaboratoryofHeavyIonPhysics,PekingUniversity,Beijing100871 |
| 摘 要： | Nuclear matter calculations in a chiral hadronic model have been performed. It has been found that the scalar and the vector potentials and binding energies per nucleon in the chiral hadronic model are very close to those of the microscopic relativistic Brueckner-Hartree-Fock calculations. The good results for finite nuclei can be obtained in the mean field approximation only if scalar mass rns and coupling constant g8 have been improved with the fixed values of c^28 = g^28(M/rn8)^2 as those given by the original parameter sets of the chiral hadronic model. Then the chiral hadronic model is extended to lambda hypernuclei. Our results predicted by the chiral hadronic model are compared with those by the nonlinear Walecka model. It has been shown that the hadronic model can also be used to describe lambda hypernuclei successfully. |
| 关 键 词： | Lambda超原子核 光学强子 核物质计算 微观相对论 耦合常数 |
| 本文献已被 维普 等数据库收录！ | |
