Spin-Isospin Resonances: A Self-Consistent Covariant Description

Journal Article · Fri Sep 19 00:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.101.122502· OSTI ID:21179729

Haozhao, Liang ^[1]; Giai, Nguyen Van ^[2]; Jie, Meng ^[1]

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1. State Key Lab Nucl. Phys. and Tech., School of Physics, Peking University, Beijing 100871 (China)
2. Institut de Physique Nucleaire, IN2P3-CNRS and Universite Paris-Sud, F-91406 Orsay Cedex (France)

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 {sup 48}Ca, {sup 90}Zr and {sup 208}Pb without readjustment of the particle-hole residual interaction. The dominant contribution of the exchange diagrams is demonstrated.

• OSTI ID: 21179729
• Journal Information: Physical Review Letters, Vol. 101, Issue 12; Other Information: DOI: 10.1103/PhysRevLett.101.122502; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALCIUM 48
CHARGE EXCHANGE
DIPOLES
EXCITATION
GAMOW-TELLER RULES
HARTREE-FOCK METHOD
ISOBARIC ANALOGS
ISOSPIN
LEAD 208
MAGIC NUCLEI
RANDOM PHASE APPROXIMATION
RELATIVISTIC RANGE
RESIDUAL INTERACTIONS
RESONANCE
SPIN
SUM RULES
ZIRCONIUM 90