Spin-isospin resonances: A self-consistent covariant description
Date
2008
Authors
Liang H.
Van Giai N.
Meng J.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
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 Ca48, Zr90 and Pb208 without readjustment of the particle-hole residual interaction. The dominant contribution of the exchange diagrams is demonstrated. © 2008 The American Physical Society.
Description
Keywords
Spin dynamics, Charge exchanges, Covariant description, Excitation properties, Hartree-fock, Isobaric analog, Isospin, Magic nuclei, Self-consistency, Self-consistent-charge, Spin-dipole resonance, Weighted-sum, Resonance
Citation
Physical Review Letters
101
12
101
12