Spin-isospin resonances: a self-consistent covariant description.
Spin-isospin resonances: a self-consistent covariant description.
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DOI：
10.1103/physrevlett.101.122502
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发表时间：
2008-08
影响因子：
8.6
通讯作者：
H. Liang;N. Van Giai;J. Meng
中科院分区：
文献类型：
--
作者：
H. Liang;N. Van Giai;J. Meng
首次建立了基于相对论Hartree-Fock（RHF）方法的完全自洽电荷交换相对论RPA。通过等压模拟状态（IAS）检查来验证自一致性。在不重新调整粒子-空穴剩余相互作用的情况下，很好地再现了双魔核48 Ca，90 Zr和208 Pb中两种重要的电荷交换激发模式Gamow-Teller共振（GTR）和自旋偶极共振（SDR）的激发性质和非能量加权求和规则.交换图的主要贡献被证明。
For the first time a fully self-consistent charge-exchange relativistic RPA based on the relativistic Hartree-Fock (RHF) approach is established. The self-consistency is verified by the so-called isobaric analog state (IAS) check. The excitation properties and the nonenergy weighted sum rules of two important charge-exchange excitation modes, the Gamow-Teller resonance (GTR) and the spin-dipole resonance (SDR), are well reproduced in the doubly magic nuclei 48Ca, 90Zr and 208Pb without readjustment of the particle-hole residual interaction. The dominant contribution of the exchange diagrams is demonstrated.